Category Archives: frogs

The Race: Endemicity and the Gulf of Guinea VII Expedition (I. The Scientists)

Readers may recall that last March, prior to GG VI, I gave several lectures in Portugal on Gulf of Guinea island biodiversity. The last was an international colloquium on São Tomé and Príncipe held at the University in Lisbon. There I met a number of the participants, among whom were old friends and a delightful entomologist named Dr. Luis Mendes; Luis and I remained in contact, and he has just published and sent me the most up-to date survey of the butterfly fauna of the islands butterfly fauna.

BUTTERFLIES

Photo by Luis Mendes

As we have learned to expect, the endemicity (uniqueness) level is high. Luis and his colleague, Bivar de Sousa, report 111 species present on both islands, 29 of which are found nowhere else in the world. Thus, fully a quarter of the butterflies (26%) are endemics. This is further testimony to the great age of these islands, as we know that genetic change (evolution) occurs with isolation and time. Last month, another paper appeared by Loureiro and Pontes confirming the endemic status of a species of dragonfly, Trithemis nigra found only on Príncipe but not seen for many years.

best Trithemis_nigra_PI_NSL_0213

Photo of Trithemis nigra byNuno Loureiro 

The image below is a summation of our current knowledge of  some of the insect endemicity on the two islands; much of the data upon which this summation is based are very old, and so much more work needs to be done.

INSECTS

photo: www images:  CAS construct.

We are getting ready for GG VII (April-May), and below is our new logo for the expedition; note that the famous Cobra bobo, a legless amphibian found only on São Tomé has been joined by an endemic Príncipe snake, also called Cobra bobo but entirely unrelated. (The cartoons of both animals were made by my graduate student, Dashiell Harwood, and the layout was by a member of our Biodiversity Education Team, Michael Murakami.

logo

GG VII (2013) logo.

Jimmy

James Shevock of CAS; photo A. Stanbridge- GG VI

Jim Shevock, a world-class bryologist, will be joining us for the third time. As you can see from the data above, he has already greatly increased our knowledge of mosses and their relatives on the islands, and there are still many species to be found. For example, during GG VI last year, Jim returned to the same locality along the Rio Papagaio in Príncipe that he had collected during GG V; in GG VI and found many plants he did not find the first time, including 10 of them new to the country! Jim has worked a lot in Asia and his nickname on Taiwan is “Little Bear.”

Rayna

Rayna Bell at Caxuiera, Sao Tome. A.  Stanbridge phot – GG VI

Rayna Bell is a graduate student from Cornell University. During GG VI she studied possible hybridization between the two endemic São Tomé treefrog species Hyperolius thomensis and H. molleri and currently has a paper in press on her work with us last year. This year we will try to find the elusive tadpole (larva) of the Príncipe giant treefrog which remains undescribed. Leptopelis palmatus is the largest treefrog in Africa.  Speaking of herpetology, to date our CAS island specimens and tissues have been used in 33 scientific publications, internationally!

Tom

Dr. Tom Daniel, Lagoa Amelia, Sao Tome.  RCD phot, GG III

Dr. Tom Daniel is a veteran of GG III and GG IV. Our senior botanist, he is a specialist on the flower family Acanthaceae (shrimp plants); in the picture above, he is standing in Lagoa Amelia next to Heteradelphia, a genus we think is endemic to São Tomé. He has done a lot of work on ferns and other Gulf of Guinea plant groups as well.

Tamas final

Dr. Tamas Szuts with some of his critters – Tszuts photos

Dr. Tamas Szuts is an expert on jumping spiders of the family Salticidae. He was a post-doctoral fellow here at the Academy under Dr. Charles Griswold (GG I) and will be joining the team for the first time. He is now on the faculty of the University of West Hungary. Salticids are about the only spider  group I think are kind of cute, face to face!

Miko

Miko Nadel, Sao Tome.  A. Stanbridge photo. GG VI

Miko Nadel is a graduate student at San Francisco State University under Prof. Dennis Desjardin (GG II, GG III). After making a comprehensive lichen collection during GG VI, he has decided to focus his research on the lichen genus Usnea; these are the hanging, pendulous lichens known in the US as “old man’s beard.”

droo better

Andrew Stanbridge at Laguna Azul, Sao Tome.  A. Stanbridge photo. GG VI

We will once again be documented by the world’s largest photographer, Andrew Stanbridge, veteran of GG V and GG VI. Andrew was one of those who ascended the Pico do São Tomé last year (see last April blog). His obvious photographic skills are only part of what he brings to our expeditions.

bob-1

Dr. Bob Drewes with Regional President of Principe, Hon. Jose Cassandra.  A. Stanbridge phot.  GG VII

I will be leading the trip as usual and will attempt to answer the ongoing question: do I have to wear a tie to see President Jose, or do I not have to wear a tie? .. Never quite seem to get it right.

The second part of the blog will be focused on the education team and our plans for Gulf of Guinea VII

Here’s the Parting Shot:

incredible Principe

Incredible Principe Island. A. Stanbridge phot. GG VI

 

PARTNERS

We are most grateful to Arlindo de Ceita Carvalho, Director General, Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for their continuing authorization to collect and export specimens for study, and to Ned Seligman, Roberta dos Santos and Quintino Quade of STePUP of Sao Tome http://www.stepup.st/, our “home away from home”.

We gratefully acknowledge the support of the G. Lindsay Field Research Fund, Hagey Research Venture Fund of the California Academy of Sciences for largely funding our initial two expeditions (GG I, II). The Société de Conservation et Développement (SCD) and Africa’s Eden provided logistics, ground transportation and lodging (GG III-V), and special thanks for the generosity of private individuals who made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include Bom Bom Island and the Omali Lodge for logistics and lodging, The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abel, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. John Sears, John S. Livermore and Elton Welke. GG VII has been funded by a very generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Mrs. W.H.V.“D.A.” Brooke, Thomas B. Livermore, Rod C. M. Hall, Timothy M. Muller, Prof. and Mrs. Evan C. Evans, Mr. and Mrs. John L. Sullivan Jr., Clarence G. Donahue, Mr. and Mrs. John Sears, and a heartening number of “Coolies”, “Blackhawk Gang” returnees and members of the Academy Docent Council. Once again we are deeply grateful for the continued support of the Omali Lodge (São Tomé) and Bom Bom Island (Príncipe) for both logistics and lodging and especially for sponsoring part our education efforts for GG VII.
Our expeditions can be supported by tax-deductable donations to “California Academy of Sciences Gulf of Guinea Fund”.

 

 

 

 

 

The Race: Island Biologists in Training

Jens Vindum, Senior Collections Manager, Department of Herpetology. (phot D. Lin-GG I)

I need to add and addendum to last month’s blog, “Why We collect Specimens.” Our Senior Collections Manager, Jens Vindum (GG I, GG II) has just informed me that since 2003, there have been 33 international scientific papers published on our Gulf of Guinea reptile and amphibian specimens and/or tissue samples from them!

Clearly, the scientific world is beginning to hear about Sâo Tomé and Príncipe! At this point, I do not know how much of our material from other disciplines has been used but certainly our samples are in labs all over the world.

We have been extremely fortunate to have been able to bring a series of our graduate students with us on a number of our expeditions.  Not only have most flourished academically and many have published on their island projects, they represent a cadre of new young scientists who have an understanding of the uniqueness of the islands and the people who live on them.  All have interacted closely with local island citizens and as a result, function as young biology ambassadors for these fabulous islands.  Overall, the islands are still very poorly known to the outside world, but we are getting there!  Here are our young colleagues:


Lindsay Wilson on Bioko Island with bush viper.  RCD phot – 1998

Lindsay Wilson was a participant on our 1998 expedition to Bioko, the first island in the Gulf of Guinea chain. She completed her MSc on African treefrogs of the genus Hyperolius at San Francisco State University with highest honors.


Joel Ledford on Sao Tome.  D. Lin phot- GG I

Joel Ledford joined Gulf of Guinea I as the graduate student of Dr. Charles Griswold. He completed his MSc at San Francisco State and then his PhD in spider systematics at the University of California, Berkeley.


D. Lin phot – GG I

Also on GG I was Ricka Stoelting, my graduate student. She completed her MSC on the endemic caecilian of Sao Tome (she is holding one, above) and is currently a PhD candidate at the University of Wisconsin.  She is also working on the publication of her MSc work at San Francisco State (SFSU).


B. Van Syoc photo – GG III

Dana Carrison-Stone was a participant of the marine expedition, GG III as the graduate student of Dr. Bob Van Syoc.  Dana discovered two new species of barnacles from the islands and they are part of her MSc which she completed last year at SFSU.


D. Lin phot – GG II

Josef Uyeda was on GG II and again GG on III as an undergraduate at Willamette University and one of my Summer Systematics interns.  During his island work, he discovered and described a new species of frog from Sâo Tomé. As I write, he is defending his doctoral thesis (tomorrow!) at Oregon State University. Flash!! Josef finished his PhD today! (Oct 5)

 

                                                                                                             unknown phot.

Mac Campbell, also a Willamette undergrad, joined GG II as an assistant to our ichthyologist, Dr. Tomio Iwamoto.  He has since completed his MSc at University of Alaska, Fairbanks and is currently a PhD candidate in fish systematic at the same institution.


Weckerphoto – GG III

Rebecca Wenk joined GG III as the grad student of Dr. Tom Daniel one of our senior botanists.  Rebecca’s work resulted in her successful completion of her MSc at SFSU and also an excellent scientific publication on plants of the family Acanthaceae.  Tragically, Rebecca died of a serious illness last year.


A. Stanbridge phot – GG IV

Miko Nadel is a graduate student at San Francisco State, studying under Dr. Dennis Desjardin, the mycologist on GG II and GG III). Miko was a participant on GG VI doing the first comprehensive survey of lichens on the island.

A. Stanbridge phot. GG VI

Rayna Bell also joined us on GG VI, studying color variation in African treefrogs. Rayna is a PhD candidate at Cornell University.

The people above were or still are graduate students who have actually worked on the islands with us.  But they are not the only young academics studying our Gulf of Guinea Island material.  Here at the California Academy of Sciences we have a program known as the Summer Systematics Institute (SSI). This program is funded by the National Science Foundation, and undergraduate students can apply to work on scientific projects for the summer under the mentorship of a CAS faculty member. Here are those that have worked on Gulf of Guinea specimens. I have not included students who started as undergrad SSI interns and later became our grad students (Lindsay Wilson, Josef Uyeda and Ricka Stoelting).


unknown phot

Katie Marshall was an Occidental College undergrad and my SSI intern in 2006.  Katie studied the genetics of the Oceanic treefrog, Hyperolius molleri, the only Gulf of Guinea endemic frog that occurs on both islands.  Katie is currently a PhD candidate at the University of Washington, studying the genomics of marine bacteria.

RCD phot.

Lisette Arellano was an undergrad at the University of California, Santa Barbara when she joined us as my SSI intern in 2009. Lisette examined the morphology and genetics of cobra jita snakes (Lamprophis), long thought to be the same species on Sâo Tomé and Príncipe.  Lisette showed that in fact the two island populations are genetically quite different, also recognizable by color pattern as distinct.  Although we know each island is a different species, we have been unable to publish new names because the relationships of the same group on mainland Africa are still very unclear. Lisette is currently a PhD candidate in Biology at the University of Colorado.


RCD phot – 2010

One of the last vertebrates one would predict to be native to an oceanic island is a shrew, largely due to physiological constraints. During the SSI summer of 2010, Eden Maloney’s DNA work showed that the Sâo Tomé shrew, Crocidura thomensis, did arrive on the island naturally, probably many thousands of years ago and is a true endemic species. Its nearest relative is a different species found in eastern South Africa.  Eden has just graduated from the University of California, Los Angeles and is applying to graduate schools.  We are working on publishing her work.

unkown phot.

Lizzie Miller of the University of California, San Diego was my most recent SSI intern (2010). Lizzie has graduated and is now in graduate school at UCSD studying fish systematics.  Readers will already know from this blog that Lizzie discovered and described a new species of gecko from Príncipe, Hemidactylus principensis.

Lauren in Nigeria. D Blackburn phot – 2012.

Lauren Scheinberg is also a grad student at San Francisco State University. Although never an SSI intern nor has she been with us to the islands, she was my lab assistant on a long-term physiology project and now works as a curatorial assistant in our department.  She has become involved in a rather complicated taxonomic problem with the island skinks of the genus Afroablepharis. Like Lisette’s snakes, we know from the work of colleagues in Madeira and Portugal that the skinks are different species on Sâo Tomé and Príncipe.  Unfortunately, material we loaned them that formed part of the basis of this hypothesis was somehow lost in transit.  Lauren has analyzed our remaining material but collating the information generated by different labs can be extremely difficult.  But we are working on it.

Plans are already afoot for GG VII next year.

Here’s the parting shot:

Joy on the way to Rolas, Sao Tome.. B. Simison phot. – GG VI

PARTNERS
We gratefully acknowledge the support of the G. Lindsay Field Research Fund, Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collect and export specimens for study. Special thanks for the generosity of private individuals who made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include HBD of Bom Bom and the Omali Lodge for logistics and lodging, The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell, Prof. & Mrs. Evan C. Evans III, John and Judy Sears, John S. Livermore and Elton Welke.
Our expeditions can be supported by tax-deductable donations to  “California Academy of Sciences Gulf of Guinea Fund”

The Race: Why We Collect Specimens!

Summer has been extremely busy.   Our irrepressible bryologist, Jim Shevock, comes into my lab almost weekly with new moss discoveries from GG VI.  He says a new paper on Fissidens (the largest moss genus on Sâo Tomé and Príncipe) is almost finished and will be submitted for publication as soon as he and his colleagues (from the US, the Netherlands and Lisbon) complete a key to identification of the species. Recall that Jim nearly doubled the number of collections he made during GG IV… He thought he had seen everything! The mesa on Príncipe will be a primary target for our botanists on GG VII, next year (see below).

 

Phrynobatrachus leveleve – RCD phot, GG VI

A nice surprise from GG VI was that we finally got some nice, un-posed  photographs of the Sâo Tomé puddle frog, Phrynobatrachus leveleve. Readers may recall that we described this new endemic species back in 2007 following GG II (leve leve means “take it easy” in the local language).  Obviously the way to get good shots of these critters is at night!

Ptychadena newtoni.  A. Stanbridge phot – GG VI

Another good find on a different night was Newton’s rocket frog (Ptychadena newtoni) at a new locality, Caxueira.

The creek at Caxueira.    A. Stanbridge phot. – GG VI

In earlier days I was concerned that this species, endemic to Sâo Tomé, was on the wane due to human development, but it appears to be more widely distributed than we thought (see also Feb 2011 blog). Caxueira is not far from the city center.

Why do we collect plant and animal specimens? Why do we bring them home euthanized and preserved (or in the case of plants, pressed and dried), and why do we organize and store them for posterity?  The easy answer is that we need to find out what they are, to identify them and describe them so we can communicate about them.  We certainly cannot conserve or preserve or even talk about species if we do not know they exist. This is particularly important in the tropics where so many different species have evolved, and especially in areas like Sâo Tomé and Príncipe that have never been fully explored by biologists.  An added note is that for a biologist to know that a species is new and undescribed, he has to know all the related species that it isn’t and then demonstrate it!

It is a fact that a lot of things in the tropics that look alike are not at all related; conversely, some critters that look radically different are, in fact, just variants of the same species.

The botanists of course confront similar questions. Below are two species of the genus Impatiens.

(l) T. Daniel phot – GG IV; (r) M. Nadel phot – GG VI

Both species are high elevation forms described a long time ago: I. manteroana is thought to be endemic to Príncipe, while I. thomensis is known only from Sâo Tomé. But are they really different species? And if so, are they each other’s closest relatives?  We do not yet have material of the former, but this is a question we can answer next year through DNA analysis. The specimen on the right was photographed high on the Príncipe mesa, which is one of the reasons it is a target area for next year.

Below is an island example of two species that look very much alike but are definitely not the same:

D. Lin phots: GG I, GG II]

These are photographs of small leaf-litter skinks of the genus Afroablepharus. The specimen above was collected on Sâo Tomé during GG I and the one below came from Príncipe (GG II).  While they look identical, they are actually two different species as shown by colleagues of ours who were working on the molecular level: extracting DNA from small bits of tissue (probably tail tips) the two species were shown to be genetically quite different.  The one from Príncipe was described over 160 years ago (A. africanus), while the one above, from Sâo Tomé, remains unnamed. This is most frustrating as even though we know they are separate species, we cannot describe the new species yet because the Sâo Tomé animals from which the DNA was analyzed were not collected.  It is a complicated situation that both groups of workers together are trying to resolve at this time.

Another example can be found in the island geckos about which I have written before.

From public presentation by E Miller. CAS Big Kahuna phot (same specimens from above and below).

For over one hundred years, the geckos from both islands that lack thumb nails were considered to be the same species, Hemidactylus greeffi, originally described from Sao Tome.  Our same colleagues noted that the two were genetically different but again failed to take whole samples and so could not describe the Príncipe species as new.  It was not until we closely examined specimens in our Academy collections from both islands that we found many morphological differences between the two, which strongly supported the genetic evidence of our colleagues.  The animal on the right is now  known as Hemidactylus principensis, yet another island endemic. As luck would have it, the paper was published while we were on Principe!

The smaller specimen on the right in both views is also what is known as the holotype; i.e., it is the single animal that is described in minute detail that becomes the “name bearer”.  All geckos collected from the islands and identified as H. principensis will be based on the description of this particular specimen; holotypes are the most important specimens in any collection.

In our collection, which is probably the fifth largest in the world, all holotypes are housed separately and identified by a blue ribbon.

Part of Herpetology collections rooms; holotypes above right, paratypes below right. RCD phots.

Another question often asked of museum scientists is “why do you have to collect so many?”  The answer is that species vary; no two members of the same vertebrate species are identical.  This is why we include additional specimens in a species description.  While the holotype or “name bearer” is usually a single animal in a standard description, other members of the same purported species, hopefully from the same place, are also described in some detail in order to account for individual variation.  These are usually designated as paratypes; in the Academy collections, they are always designated by red ribbons [above] and are the second-most important.

Yet another frequently asked question is, “do you have to kill the specimens?”  The answer lies in the fact that not all characters (similarities and differences) are observable from the outside.  With animal groups like frogs, one has to look deeper, and this is impossible with living specimens. Below is a collage of some of the sorts of characters I had to examine in determining the relationships between members of African tree frogs of the family Hyperoliidae— found in Africa, the Seychelles and Madagascar.

All RCD phots.

Notice that the x-ray in the lower right hand corner revealed to us that the two geckos mentioned above not only lack thumb nails, they lack the entire terminal bone of the thumb! (the new species, Hemidactylus principensis, is on the left). So far as we know, they are the only two members of the genus Hemidactylus, (90+ species) that exhibit this characteristic.  This might suggest they are each other’s closest relatives, but we are in the process of determining that by further DNA analysis that includes other closely related species.

During GG VI we did another kind of collecting:

Rayna Bell, Cornell University. A. Stanbridge phot – GG VI

Notice that in her left hand, Rayna Bell is holding an adult Sao Tome giant treefrog (Hyperolius thomensis), while in her right she has a cotton swab.  She swabbed the skin of each frog she collected a number of times in a number of places in order to detect the presence of chytrid fungus. The swab will also detect the actual infection load if the fungus is present.  This is the first attempt at detecting the fungus on the islands of Sâo Tomé and Príncipe, and we do not yet have results. It is certainly present in other areas of Africa. Batrachochytridium dendrobatidis (Bd for short) is a fungus that has been implicated in the mass die-off of populations of frogs in many parts of the world.  Frog skin is a living membrane through which gasses and water can freely pass; while the mechanism is not well-known, the fungus seems to totally disrupt these functions causing the demise of the infected frog.

 

Cross section of Bd infected frog skin.  (A) are sporangia with zoospores visible. (B) tube through which zoospores are released to the environment. Phot courtesy of A. Pessier, U. Illinois

Another real value to collections is the fact that past history can be discovered through our specimens. It turns out that Bd can also be detected by swabbing alcohol preserved specimens regardless of age, although the resulting data are not quite so informative as samples from living material.  Below is Dr. Dave Blackburn’s “chytrid crew” (mostly undergrad and graduate students) swabbing specimens collected from the Impenetrable Forest of Uganda many years ago.  Dave is our new curator in herpetology and a real expert on Bd.

Dave Blackburn’s “chytrid crew”.  D. Blackburn phot.

Every trip to these small amazing islands yields new discoveries. We are planning our next expedition for 2013 and excited at the prospect of the new stuff we will find.

Here’s the parting shot.

Autonomy Day in Principe, 2012 A. Stanbridge phot, GG VI

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund, Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collect and export specimens for study. Special thanks for the generosity of private individuals who made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include HBD of Bom Bom and the Omali Lodge for logistics and lodging, The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell, Prof. & Mrs. Evan C. Evans III, John and Judy Sears, John S. Livermore and Elton Welke.

Our expeditions can be supported by tax-deductable donations to “California Academy of Sciences Gulf of  Guinea Fund”.

 

 

The Race: Sixth Gulf of Guinea Expedition Redux

dashs-patch1

All of the GG VI participants are home now, and our specimens and materials are safely ensconced in their respective departments at the Academy.  For the first time, we had an official patch for the expedition. The original design of the cobra bobo and giant Begonia was drawn by one my graduate students, Dashiell Harwood. The patch was produced by our friend, Mike Murakami, who played such an important role in the production of the biodiversity coloring books (more about the education project below.) We gave many of these stick-on patches to third grade teachers to hand out as incentives to hard-working students.

tomio-1-21

Dr. Iwamoto consuming his favorite, the concon. (A. Stanbridge – GG VI

Soon after Dr. Tomio Iwamoto, our marine ichthyologist and veteran of GGI and GG II returned home to the Academy a few weeks before the last of us, he left for Africa again. And, once again, he is aboard the Norwegian research vessel, the R.V. Nansen, as a senior scientist. I devoted an entire blog to his last trip aboard the Nansen, a couple of years ago.  They are trawling for deep water fish off the coast of Guinea Conakry. I believe the ship will also be exploring the coast of Mauritania in the following weeks. Since he left before we returned we have not been able to discuss his findings during GG VI; but below is a photo of the strange pipefish he and and Dr. Brian Simison seined in northern S?o Tomé

pipefish-bs
Microphis, the only member of its family reported from S?o Tomé and Príncipe. (B. Simison-GG VI)

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Our botanists had a “a field day,” so to speak.  Recall that Jim Shevock (right) made 682 collections during GG IV, and this time he figured he would just pick up a few things he missed.  Not so. He estimates that among the 647 collections he made in GG VI are between 50 to 100 species of bryophytes he had not seen before, and these include at least 12 genera of liverworts and 12 genera of mosses that are new to the islands.
Miko Nadel (left, above) really has his hands full trying to sort out the lichens; there are 129 previously known species, but Miko made 475 collections, many of which will undoubtedly be new.  He tells me that lichenologists classify lichens by the supporting fungus rather than the symbiotic algae.

as-mesa

Pico Mesa,  Príncipe ( RCD –  GG III)

In an earlier blog from the islands, I reported that Jim, Miko and our photographer Andrew were the first CAS workersto study the top of Pico do S?o Tomé. Later on Príncipe, Jim and Miko became the first of us to reach the top of Pico Mesa (above).  Because they had to walk there rather than reaching the base by boat, they were only able to explore the northern most reaches of it; it appears to be a botanist’s paradise, and we will definitely return. Dr. Tom Daniel (GG III and IV) is particularly interested in getting up there as Miko photographed an endemic Impatiens at the top.

pedro-1

Gabriel, me, Rayna Bell and Joao Pedro Pio at Bom Sucesso (A. Stanbridge – GGVI)

The herpetologists also did well. Rayna and I were assisted by a young Portuguese biologist, Joao Pedro Pio (far right), currently working on the endangered endemic maroon pigeon for workers at the University of Lisbon. He and his co-workers (including Gabriel, left) accompanied Rayna on all of her nocturnal frog hunts.

 

critter-1
Above is Hyperolius molleri, the oceanic treefrog typically inhabiting the lower elevations of both islands. This particular frog is being devoured by a wolf spider and note that it is largely a uniform green in color. In many earlier blogs, I have included images of the S?o Tomé giant treefrog which is much bigger, has bright orange and black markings and is typically found above 1100 meters.

 

raynas-frogs-1

Rayna’s sample from between 700 and 900 meters would strongly suggest that the two species are hybridizing at this level.  This is pretty exciting in that, if supported by genetic analysis, it will fit right into her PhD thesis at Cornell University.

bob-with-snake-1

While I failed to find adult specimens of the Príncipe shrew which we know to be endemic and distinct from the S?o Tomé shrew, we did find the largest “cobra gita” (house snake: Lamprophis sp.) we have ever seen and from a new locality.  This, too, we know to be a distinct species from the S?o Tomé Lamprophis, but we have thus far been unable to describe it. This is because there are many species of the same genus on the African mainland, and their relationships are poorly understood. So while we know the two island species are distinct from one another, we cannot guarantee that one or the other (or both) does not also occur on the mainland.

h-principensis
The Príncipe thumbnail-less gecko H. principensis (Weckerphoto – GG III]

While we were on Príncipe I received word that the description our new species of gecko had been formally published, so above meet Hemidactylus principensis.  Like H. greeffi, its nearest relative on S?o Tomé, it lacks the thumbnail on the first toe, but otherwise, the two are very, very different.

Dr. Brian Simison’s finding that there are no limpets on either S?o Tomé or Príncipe is intriguing.  Brian informs me that so far as he knows, S?o Tomé and Príncipe may be the only oceanic islands that lack them.  They are present on the Cape Verde Ids, the Seychelles, etc.

brian-1
Dr Brian Simison at Laguna Azul.  (A. Stanbridge – GG VI)

This leads to the possibility that there may be something in the volcanic rock making up these islands that precludes the presence of these mollusks.

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Recall from earlier blogs that all four of the Gulf of Guinea Islands, plus Mt. Cameroon, the Cameroon highlands and even the Jos Plateau of Nigeria all originated from magmatic extrusions up through a 3,000 km-long linear fissure or rift that transects both the marine and continental parts of the African plate known as the Guinea Line; extrusion of magma occurred at various times from over 60 million years ago to the very recent Holocene continental island of Bioko.

The remarkable towers of both S?o Tomé and Príncipe which appear in these blogs with such frequency are indeed of a rather uncommon, chemically distinct rock known as phonolite, usually associated with geologic hotspots.

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Príncipe, note phonolite towers and mesa on lower left. (A. Stanbridge – GG VI)

One test of the hypothesis that it is something about the rock that is excluding limpets would be to explore the shoreline of Bioko, the youngest of the Gulf of Guinea Ids and the only continental member of the archipelago.  And as luck would have it, our colleague, Rayna Bell will be working on Bioko in a matter of months.  In addition to looking for limpets on Bioko t the presence or absences of limpets along the Gulf of Guinea coast should be documented. If indeed the rock is unsuitable for limpets Brian would predict that limpets would be found on either side of Guinea Line, but not on rocks produced by it.

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(l-r, Roberta Ayres,  Velma Schnoll, me on, S?o Tomé (A.  Stanbridge – GG VI)

I devoted an entire blog last month to the biodiversity education component of GG VI, and for all of us involved, this was just joyous. We personally delivered 1,840 endemic species coloring books to third graders in 62 classrooms of 17 selected primary schools on both islands. On the big island the schools were in the districts of S?o Tomé town, Angolares, Trindade and Neves , and on Príncipe  at Santo Antonio, Sundy, Sao Joaquim, Nova Estrella and Praia Abade.

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Porto Real, “my school” on Príncipe  (V. Schnoll – GG VI)

To say they were well received would be a gross understatement.  Again, we thank all who worked on this project (see March 9 blog: Sharing the Wealth; and for those who made GG VI financially possible, see “Partners” below).  At the adult level, we also gave five lectures on the biodiversity of the islands: two in Portugal and three at institutions on the islands themselves.

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Droo doing his thing on S?o Tomé ( R. Bell – GG VI)

Andrew Stanbridge (above), our photographer on both GG V and GG VI, is a remarkable person in many ways; much more than just a gifted professional artist.  His website is Andrewstanbridge.com

Here are some parting shots:

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PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collectexport specimens for study. Special thanks for the generosity of private individuals who have made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include HBD of Bom Bom and the Omali Lodge for logistics and lodging, The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell, Prof. & Mrs. Evan C. Evans III, John and Judy Sears, John S. Livermore and Elton Welke. Logistics and lodging for GG VI (Omali Lodge and Bom Bom Island) were kindly provided by HBD.

The Race: Mountains That Glow

 

Drs. Brian Simison and Tomio Iwamoto and Roberta Ayres and Rayna Bell left early this morning on the TAP flight for home; five of us remain: our two botanists on Principe and three of us here on Sao Tome continue. It is time for a science update, especially since it is pouring rain as I write, and our biodiversity education mission on the big island is completed for now.

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Last week, and for the first time, Academy scientists collected the top of Pico do Sao Tome. At over 2,000 meters, the peak is remote and can be quite dangerous to ascend in the rainy season, especially carrying equipment. Our guys were able to accomplish this with help from our friends, Andre Reis, Hugo Serodio and Antonio Fernandes. Andre runs Tropic Ventures, a new company that provides various tourist activities including car rentals, water sports, etc but they also take on really hairy missions into the interior of the island. Andre is ex-military (Portuguese) and his company, equipment and skills are very, very good.

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After a postponement due to the rains, Jim Shevock, Miko Nadel, and our photographer Andrew Stanbridge made two-day ascent, collecting all the way.

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Those who know Jim Shevock, the Academy’s moss expert, will not be surprised to learn that he went nuts. I have no idea how many moss specimens he got nor how many are new, but to say he was enthusiastic upon their return would be a gross understatement.

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But the neatest discovery was made by Miko Nadel, our lichen grad student from San Francisco State. Sitting and eating dinner in the darkness, Miko looked down and thought he saw Andrew’s wristwatch on the ground, glowing at his feet. What he soon discovered was not Andrew’s watch but a patch of bioluminescent mushrooms!

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Miko’s graduate advisor, Dr. Dennis Desjardin, a world authority on mushrooms, was with us on GG II and GG III and made the first comprehensive survey of both islands. But , curiously, Dennis (a Fellow of CAS) has recently been doing cutting edge research on bioluminescent mushrooms! So I waited until Dennis gave his OK, before posting Andrew’s images of these remarkable fungi. As usual, we will not know what all this means until we return to CAS for analysis. That is how science works.

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Rayna Bell’s mission was to examine the possible hybridization between the Sao Tome giant treefrog, Hyperolius thomensis and the oceanic treefrog, H. molleri. We have had genetic and phenotypic hints that this might be happening for some time now. Rayna’s PhD thesis at Cornell is on the evolution of sexual dichromatism in African treefrog species.

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It looks as though hybridization is indeed going on between the two species at about 800 to 900 meters. Rayna was able to get samples of the giant frog at 1400 meters and then sampled “downhill” at various elevations to nearly sea level, in oceanic treefrog territory. We had great help from Joao Pedro Pio, a young Portuguese friend who is working on the endemic maroon pigeon; lucky for us, he loves adventure and frogs. Rayna is tireless, bright and fun to be with; but among us bush herpetologists, the real test is how one does in the boonies. She is wonderful; I was proud to have her along with us.

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And by the way, last night (Rayna’s last), she and Andrew visited the “magic tree” where we have always found the giant treefrog.. they came in about midnight, and told me that as they sat next to the tree, waiting for frogs, the entire forest floor around them was aglow!

It is still raining and outside my door, a Sao Tome prinia is hopping around in the bushes; I will let Andrew’s pictures speak of Tomio Iwamoto and Brian’s adventures in Micoló catching mudskippers and pipefish.

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The Parting Shot:

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all photos by Andrew Stanbridge

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collectexport specimens for study. Special thanks for the generosity of private individuals who have made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell,John and Judy Sears, John S. Livermore and Elton Welke. Logistics and lodging for GG VI (Omali Lodge and Bom Bom Island) were kindly provided by HBD.

Our expeditions can be supported by tax-free donations to “California Academy of Sciences Gulf of Guinea Fund”.

The Race: Gulf of Guinea VI. First week.

Having completed my lectures at CIBIO near Porto, and in the symposium on Sao Tome and Principe in Lisbon, I hooked up with Drs Tomio Iwamoto, Brian Simison, and James Shevock, Miko Nadel and our outstanding photographer, Andrew Stanbridge in the Lisbon airport whereupon we paid gobs of money in overweight charges to TAP airlines (coloring books). The first six of us arrived at the Omali and have been working in various sites for a week until we were joined by Rayna Bell on the Friday morning flight. Rayna is the Cornell grad student who is looking at some interesting genetic problems with the treefrogs here. Early on I paid visits to Arlindo Carvalho, Director General of the Ministry of the Environment and Victor Bonfim, Director of Conservation to pay our respects and request our authorizations.

All of the photos below are by Andrew Stanbridge.

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The first six of us; lunch at Angolares, southeast Sao Tome

So far, we have found no limpets! Small barnacles, yes; marine mollusks, yes; but no true limpets. Brian is pretty much sampling everythingbut his specialty critters do not seem to be here.Whether or not there is some chemical feature of the volcanic rock that renders the rocks uninhabitable remains a question.Perhaps Principe willbe different.

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Brian Simison (right) searching rocks on Sao Tome west coast.

Jim Shevock has already found two bryophyte families new to the islands, both on the Macambrara road at about 1100 meters. This is Jim’s second trip; in GG IV, he made some 800 collections, so this is stuff we missed.

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Jim reaching for hanging bryophytes on the Rio Abade

Miko Nadel, our grad student from San Francisco State, is conducting what we think is the first lichen survey ever of these oceanic islands- so everything is kind of new.

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Miko with captured lichen; on the road to Sao Nicolau.

Tomio Iwamoto, veteran of GG I and II is working closely with the Department of Fisheries and an NGO called MARAPA to produce a guide primarily for the local fishermen.

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Tomio inspects catches near Agua Ize

Yesterday, after Rayna’s arrival, we went up to inspect the large Olea tree which is our one locality for the unique Hyperolius thomensis. Like last year, we found no adults but there were old egg masses in both tree holes, and definitely tadpoles in one of them. The rains are upon us, and we are hoping that during the next couple of weeks the other smaller green species will appear. We are being assisted by old friends and a new one, a young Portuguese graduate named Joao Pedro Pio who works with Mariana Carvalho on the endemic maroon pigeon. I think Rayna and I, Pedro and a local guy from Nova Moca will go up at night to Lagoa Amelia (nearly 1500 meters) to try to collect Hyperolius molleri.

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Andrew Stanbridge continues to take brilliant pictures. He is much more of an asset to us than just his fabulous shots.

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Andrew with Bode, famed resident of the remote Bombaim. Bode sings the Portuguese national anthem in a truly appalling voice and sells cobra skins. (photo: Brian Simison)

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Me, bargaining for a side-necked turtle (Pelusios castaneus) at Ribeira Afonso

Tuesday, the two botanists and Andrew will go up to the top of the Pico, an area we have never collected. We are being taken there by our friends from Tropic Ventures, Andre, Hugo and Maneh. At the same time, Rayna and I will go out to Rolas Island to look for caecilians.They were collected on the island many years ago and we wish to add them to our genetic map of this unique species.

Here’s the parting shot.

parting-shotImagine thousands of hectares of oil palm between this boy and Cao Grande. It is happening.

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collectexport specimens for study. Special thanks for the generosity of private individuals who have made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell, John and Judy Sears, John S. Livermore and Elton Welke. Logistics and lodging for GG VI (Omali Lodge and Bom Bom Island) were kindly provided by HBD.

Our expeditions can be supported by tax-free donations to “California Academy of Sciences Gulf of Guinea Fund”.

The Race: Gulf of Guinea VI Part II (Sharing the Wealth)

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Principe Island from the northeast. This island is at least 31 million years old [Phot. Eddie Herbst]

Some years ago the Gulf of Guinea Project “morphed” from a pure multidisciplinary research focus to include an additional and parallel effort to share our science with the local people and non-scientists everywhere. My first couple of visits to São Tomé and Príncipe followed over thirty years of fieldwork on the African mainland, essentially doing science that is read and used by other scientists; this had been wonderfully exciting, rewarding and fun (sometimes scary).But my exposure to the islands of São Tomé and Príncipe changed my outlook and to some degree, the direction of my work in a fundamental way.

Here is a tiny two-island nation absolutely unique and rich biologically, yet still poorly known to the world of science. At the same time there is a looming threat to the environment with the recent discovery of off-shore oil, and the real danger that the world might lose this biological richness before it is even discovered and described! Moreover, the delightful citizens of these islands have, by and large, no idea how rich and special their biodiversity heritage is. Perhaps if we could make the citizens aware of what they have that is unique, found nowhere else in the world, they might be in a better position to make informed decisions as change occurs in the future.

Here, I realized, is an opportunity to help an entire nation prepare for change through awareness of the unique nature of their environment.But how?

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The sharing of knowledge is fundamental to my discipline, and I have always brought or sent copies of our published scientific results to the governments and appropriate institutions of the African countries in which I have worked, but it was not until several years into our islands work that it occurred to me that we should be including a Portuguese abstract in each of our publications (above left). The abstracts at least make our work understandable to Portuguese scholars who read scientific journals,but on the islands, it was only the various ministries and specialists who even received these articles, and they are technical in nature (we have published 18 so far).In 2008, I began to write this monthly blog (above right). While it is written for a popular audience and hopefully helps bring world attention to the biological uniqueness of the islands, it is still only available to English speakers with access to the worldwide web.

Visitors to the California Academy of Sciences are aware of our work in the islands as we occasionally have small semi-permanent exhibits on our island work on the public floor (see below)

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I should mention that the Academy is nearly 160 years old, and we receive over one and a half million visitors per year.We have frequent after-hour public and fundraising events, and whenever possible we have a Gulf of Guinea Islands display which give those of us who are involved an opportunity to describe our research to our public in person.

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Velma Schnoll at Discovery Evening.March 2, 2012 (Phot. RCD)

While these events help make our local visitors aware of our island work, they obviously have only indirect impact to our island friends.

During expeditions in the past few years we have been interviewed by local media (radio and television) and have been asked to give lectures on biodiversity at a number of schools and institutions, especially at the Instituto Superior Politecnico, thanks to Dra. Alizira Rodriguez, and also at a biodiversity conference under the auspices of Regional President Tosé Cassandra of Príncipe.

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Lecture at Instituto Politecnico Superior in Sao Tome (Phot. A. Stanbridge, GG V)

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Local high school lecture (Phot A. Stanbridge, GG V)

These have been excellent opportunities to communicate directly to advanced students and conservation workers (through a translator), but the information still does not get down to the fishermen, the kids, or the people in the market places.

Sometime in 2010, before GG IV, it occurred to me that we might be able to reach the local populations visually.One of the things we have that nobody else has is outstanding images, not just of pretty beaches and Câo Grande, but of the unique living plants and animals themselves!And we know what they are, and sometimes where they came from.So, I put together a series of powerpoint mockups of colorful biodiversity posters on my laptop, and during GG IV Ishowed them to everyone who would look; they all seemed to like the colorful montages.

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Roberta Ayres (CAS) and Roberta dos Santos (STeP UP). [GG IV, from V. Schnoll presentation, 2011]

During GG IV, one of the expedition members was Roberta Ayres, MSc., an Academy educator who runs our nature center (see earlier blogs).Roberta’s mission was to assess the level of knowledge of biodiversity in the islands’ school system, assess the likely impact of the posters, and to discover what else we might do to raise biodiversity awareness through the schools.I have written a number of blogs about how the posters were ultimately produced, thanks largely to the efforts of Velma Schnoll, Docent Coordinator and Jim Boyer of our CAS Docent Council (see below) and with funding from STeP UP.

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Posters, GG V. from V. Schnoll presentation, 2011.

Gulf of Guinea Expedition V was a largely educational mission dedicated to the distribution on both islands (see earlier blogs) of the 200 posters we produced, and this was accomplished by Mrs Schnoll, Andrew Stanbridge (our photographer), and I, along with a host of local friends, including Marnie Saidi of Príncipe and Antonio Fernando of São Tomé. A very central figure in all of our endeavors, both scientific and educational since the very first expedition in 2001 has been Quintino Quade of STeP UP.Readers will know that he appears in virtually every blog since the first one.

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Poster distribution. [all photos A. Stanbridge-GG V; from V. Schnoll presentation, 2011]

At the same, we continued to pursue information on our ultimate goal which is the creation of a Gulf of Guinea Biodiversity Center, a place on the islands where the citizens can access all of the information being gathered about the environment, and which can serve as a clearing house for all science and natural history research on the islands. Over the years, we have shared this idea with many citizens and foreign researchers on São Tomé and Príncipe.

In Part I of this blog, I described the scientific goals of GG VI (which begins next month) and introduced the investigators who will be on the expedition.The education component (Part II) is meant to build upon the efforts of GG V, and two educators will be coming along as well: Roberta Ayres (GG IV) and Velma Schnoll (GG V).

Like the overall project, our biodiversity education efforts have morphed into a team with Mrs. Velma Schnoll as Biodiversity Education Project Manager.After much debate (including the possibility of an animated cartoon), the team decided to produce 2,000 coloring books for young elementary school students, featuring the same endemic species that appear on the posters of last year. We have selected four primary schools on São Tomé and, of course, the one in Santo Antonio, Príncipe as our trial sites.

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The Biodiversity Education Team (l-r): T. Daniel (science advisor), V. Schnoll (project manager), J. Boyer (chief illustrator and production), C. Schneider and S. V. Edgerton (fine art), R. Ayers (text and translation) and M. Murakami (graphics and production). Absent : L. & C. Rocha (translation) and E. McElhinny (cartography). [Phot RCD]

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The team at work [Phot V. Schnoll]

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Velma Schnoll, project manager, with initial page layout [phot RCD]

The coloring books are being printed as I write;

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Thanks to Mike Murakami’s friend, Richard Engle, proprietor of Solstice Press, Oakland California, we got a very favorable discount on the printing costs. So, here is what they will look like:

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The front cover artwork is by Sean Vidal-Edgerton. Sean and Corlis Schneider (back cover art) were both in a biological illustration program at the University of California at Santa Cruz, and California State University, Monterey Bay. In 2011, this group produced a wonderful on-line account of our São Tomé and Príncipe biodiversity research: http://sciencenotes.ucsc.edu/2011/pages/eden/eden.html We were extremely fortunate that they joined us.

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The inside back and front covers have color images of the same living plants and animals that are illustrated in the cartoons.

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This is a spread of the full contents of the book; except for the first two pages, the cartoons will not necessarily be in this order. The two game pages will be in the middle of the book.

Here are a couple of Jim Boyer’s fabulous cartoons as they will appear as full pages:

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The Giant Begonia and Newton’s sunbird, both endemic to Sao Tome.

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The Principe puddle frog found only on that island.


Back cover Sao Tome e Principe coloring book

Again, the back cover artwork is by the talented artist, Corlis Schneider.As the logos indicate, much of the production costs of this project have been provided by a Goldman Fund donation to STeP UP, one of our main partners on the islands.Africa’s Eden is already well known to readers of this blog; the rest of us are volunteers.

So, Part II of Gulf of Guinea Islands Expedition VI is the distribution of the coloring books. Moreover, Roberta Ayres and Velma Schnoll have produced a teacher’s guide incorporating both the books and the posters with island evolutionary principles, and they hope to conduct a workshop for teachers in São Tomé and later on Príncipe.

Now, all we have to do is get 2,000 of these books to the islands by hand, and somehow procure enough colored pencils (crayons do not work well on the Equator) over there for the kids.

As usual I will post from the islands.

Here’s the parting shot:

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Atopochlis exerata, one of the many unique snails on the islands. Photo byM Morais, courtesy of A. Gascoigne]

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collectexport specimens for study. Special thanks for the generosity of private individuals who have made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell, John and Judy Sears, John S. Livermore and Elton Welke.

Our expeditions can be supported by tax-free donations to “California Academy of Sciences Gulf of Guinea Fund”.

The Race: GG VI, Part I (the Science)

Things have been very busy here at the Academy of Sciences, and this is one of my tardier blogs! However, part of the hustle and bustle has been in planning our next expedition, Gulf of Guinea VI.

The first good news is that our new species of gecko from Príncipe is about to be formally published in the African Journal of Herpetology, possibly as soon as April. It is bad luck to give you its name before it is published, but here is what it looks like, and we are adding yet another endemic species to our wonderful islands!

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Our new gecko near Bom Bom, Principe.  Weckerphoto- GG IV

As readers know, our expeditions have largely been privately funded since GG III, and the friends who have helped us are always celebrated in the PARTNERS section below.  However, I am going to take this early opportunity to thank the folks who are making the upcoming expedition financially possible: The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Prof. & Mrs. Evan C. Evans III, Bernard S. Schulte, John S. Livermore, John and Judy Sears and Elton Welke.

Here are the scientist participants in the upcoming GG VI which will run from 30 March until 5 May.

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Dr. Tomio Iwamoto on Sao Tome.  D Lin phot- GGI

Dr. Tomio Iwamoto is Curator Emeritus of our Ichthyology Department, and my good friend and flyfishing buddy.  He is a veteran of GG I and GG II and has already published two scientific papers as a result of these expeditions. He has also worked with São Tomé and Príncipe fisheries people in deepwater trawling around the islands (see Shipboard Discoveries….June 2010 blog).  During GG VI he wants to visit as many local fishing villages as he can on both islands to see what the most commonly caught fishes are.  His goal is to produce a popular guide for the fishermen themselves! This will not be a scientific publication.

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A Longfin crevalle jack described to science only five years ago. Sao Tome.  A. Stanbridge phot- GG V

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Dr. Brian Simison; limpet photo by  T. Laupstad]

Dr. Brian Simison is a world authority on small monovalved molluscs known as limpets, commonly found firmly attached to rocks in the coastal littoral zones.  So far as we know, this group has never before been sampled in São Tomé and Príncipe, and our expectations for new discoveries are high.

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Crocidura tomensis, the Sao Tome shrew. Phot by Ricardo Lima, 2010

Brian is alsoDirector of the Academy’s  Center for Comparative Genomics which is where all our genetic and molecular work is done.  He became involved in our molecular test of the true status of the endemic São Tomé shrew (see Unique shrew…. August 2010 blog).  Working with Eden Maloney, he discovered that the shrew on Príncipe, long thought to be a mainland species, may indeed also be an endemic to that island.  While we collected DNA of this second shrew during GG II, we collected no adults.  Assuming we receive permission from the Ministry, Brian and I will also try to secure a couple of adult Príncipe shrews. If this is indeed a unique species, we will need to be able do describe its anatomy formally.

Two graduate students will be joining us.  The first is Rayna Bell who is doing her PhD on African tree frogs at Cornell University.

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Oceanic tree frog, Hyperolius thomensis (phot RCD- GG I); Rayna Bell

Rayna will be looking at a potential hybrid zone between the oceanic tree frog (above, Hyperolius molleri) and the flambouyant São Tomé giant tree frog, H. thomensis of higher elevations, which I have featured in many of these blogs.  There is something curious going on with the genetics of these species and one of Rayna’s projects will be to look at both populations from the molecular perspective.

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Miko Nadel and lichens (from web)

Our other graduate student is Miko Nadel, who is doing his MSc in botany at San Francisco State University under the guidance of our favorite mycologist, Dr. Dennis Desjardin, describer of the now infamous Phallus drewesi of São Tomé.  Recall that Drs. Desjardin (GG II & III) and Perry (GG III) learned that over 33% of the mushrooms of São Tomé and Príncipe are new to science.  Miko informs me that there have been only a couple of scientific papers ever written on the lichens of the islands, and that was back in the 1880’s.  So it is time for a more modern and thorough look at this flora.

Finally, we round the scientist group out with the irrepressible Dr. James Shevock, the Academy’s bryophyte (mosses and their allies) expert.

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Jim Shevock with moss at the Omali.  RCD phot-GG IV

The results of Jim’s efforts during GG IV are summarized in the image below.  The largest uptick of new species for the islands is expected in the third paper, which we hope will be published this year.

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Compilation and photo by RCD, GG IV

As in GG V, the new expedition will be accompanied by the world’s largest photographer, Andrew Stanbridge.  His images from GG V are magnificent, and he is a most excellent and willing field companion. His work can be viewed on the web at www.andrewstanbridge.com


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RCD and photographer Andrew Stanbridge. V. Schnoll phot – GG V

There will be two additional members of GG VI, both veterans of earlier expeditions,  Ms Velma Schnoll and Ms Roberta Ayres, but I will reintroduce  them in more detail in the second part of this blog which will be on our concurrent biodiversity education activities.

The parting shot:

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The Jockey’s bonnet, Principe. Photo by Eddie Herbst – 2011

[Herbst]

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim,  and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to export specimens for study.  Special thanks for the generosity of private individuals who have made the GG III-V  expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, Sheila Farr Nielsen, Corinne W. Abel and Mr. and Mrs. John Sears, Bernard Schulte, and John S. Livemore.   Our expeditions can be supported by tax-free donations to “California Academy of Sciences Gulf of Guinea Fund”.

The Race: Henrique’s Spider

We have been back from GG V for a week or so now, and Velma and I are still trying to sift through the happy kaleidoscope of our experiences. Our photographer Andrew Stanbridge went on to further adventure with my kids in Ethiopia, so I suspect it will take him longer to decompress!

GG V was different; in over 40 years of fieldwork, this was the only expedition I have led in which I did very little science – mostly outreach and lecturing which were of course our goals this time. But, you can take the boy out of science, but not the science…….. etc. So along with lecturing, distributing posters and meeting important citizens, we did manage to do a little science.

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The Sao Tome giant tree frog D. Lin Phot – GG I

Readers of this blog (Glorious Ghost…. May, 2008) will already know about the endemic Sao Tome giant tree frog that breeds in holes in trees in the higher elevations of Sao Tome Island. Although we have not collected any since 2006, on every expedition I always check one particular tree to make sure its holes are still in use by the frogs. And I keep the location of the tree a secret, as I would hate to see these wonderful critters in the pet trade. This Olea is the only tree we have found with holes low enough to give easy access to the breeding holes.

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V. Schnoll phot – GG V

This time we found no adults but obvious signs that the frogs still use them.

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V.  Schnoll phot.- GG V.

An egg mass was present in one of the holes testifying to the fact that the frogs are still around. I have no idea of population levels as these frogs appear largely to be canopy dwellers, but I doubt they are rare as they can be heard at night calling from high up in the trees.

On the eastern side of the island, our jumping off point for high elevation work like this has always been Bom Sucesso, where the main Trinidade road ends. This combination Park Obo Headquarters, meeting place, tourist destination and overnight facility for hikers and scientists at about 1000m is about as high as you can go by vehicle, and it is also a charming Botanical Garden. Until recently it has also functioned as the National Herbarium, curated by Faustino de Oliviera. Much of our duplicate Academy plant specimens are housed there complete with data labels.

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Lagoas, our old friend, guiding tourists at Bom Sucesso. V. Schnoll phot– GG V

During GG V, we were saddened to learn that the various projects that have supported Bom Sucesso have been exhausted and except for a few guides waiting for tourists, no one seems to be maintaining the botanical garden and the herbarium– they are rapidly falling into disrepair.

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Andrew and Velma lunching at Bom Sucesso. RCD phot–GG V

This is particularly tragic in that it is the National Herbarium, and I have always felt strongly that African countries should share in the biological discoveries made in their territories. Moreover it is frequently visited tourists attraction. Regrettably, there is no minimal, base-line government support to keep such entities going. My guess is that it would take only two salaries to survive the lean periods between projects: one for a full-time gardener and one for the Herbarium Curator.

Down the mountain at about 800m and not far from the waterfalls of Sao Nicolau is the lovely home of my friend, Henrique Pinto da Costa.

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Henrique Pinto da Costa viewing a poster. V. Schnoll phot.– GG V

Henrique is the former Minister of Agriculture and one of our most valuable friends; I have learned much about the history and people of Sao Tome and Principe from him, and he has appeared in earlier blogs.

On our first GG V visit to Henrique’s he gave us a tour of his gardens which are extensive and impressive.

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Henrique’s garden. R. Ayres phot–GG IV

As we were walking through, Velma called my attention to a rather amazing-spider, among Henrique’s plants, and I recognized it as a Gasteracantha. This is a spider I am familiar with from my early days in East Africa.

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Henrique’s spider. A. Stanbridge phot.– GG IV

Gasteracantha is an orb weaver, although it does not look like one. They are solitary and weave a flat, disc-shaped web, but also have strange lateral spine-like projections from the body. On GG I, back in 2001, we had two arachnologists with us and made a large collection. This collection has yet to be analyzed but having been with both spider people, I could not remember ever collecting this genus on the islands.

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Gasteracantha sanguinolenta? strange dorsal view. A. Stanbridge phot — GG V.

We did not touch the spiders, but when we returned to our base in Sao Tome, I emailed Dr. Charles Griswold, my colleague, one of the world’s experts on spiders and the lead arachnologist on GGI. I informed him that I could not recall ever collecting members of this genus on our earlier trips to the islands, and should I collect some

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Dr. Charles Griswold at Lagoa Amelia. D. Lin phot — GG I

Charles response: Get ‘em! The parting shot of our 22 April blog is of my long-time friend and island field companion, Quintino Quade Cabral, collecting spiders in Henrique’s garden. We got a fine series of Gasteracantha and also some of a different, non-spiny species that appears to be somewhat colonial. The specimens are in our spider lab awaiting identification. A preliminary ID suggests they may be something called the Blood-red spiny spider, G. sanguinolenta. This has an enormous range so it well might be; on the other hand, a closer look at Sao Tome and Principe specimens frequently brings surprises.

More when our photographer, Andrew returns. My next Summer Systematics Intern, Elizabeth Miller, will be working on the genetics of Greef’s giant gecko, supposedly the same critter on both islands…. but time will tell.

The Parting shot:

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Andrew Stanbridge at Monte Cafe, Sao Tome. V. Schnoll phot–GG V

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund (GG I), Hagey Research Venture Fund (GG II) of the California Academy of Sciences, the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STeP UP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bonfim, Salvador Sousa Pontes and Danilo Barbero of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to export specimens for study, the continued support of Bastien Loloum and Mariana Carvalho of Zuntabawe and Faustino de Oliviera, Curator of the National Herbarium at Bom Sucesso. Special thanks for the generosity of private individuals, George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, and Mrs. Sheila Farr Nielsen for helping make these expeditions possible. Tax-deductable donations in support of this work can be made to “CAS-Gulf of Guinea Fund.

The Race: On Rocket Frogs and Millipedes

First, some great news on the academic front.  One of the graduate student participants on GGI back in 2001 just completed his PhD at the University of California, Berkeley. Meet Dr. Joel Ledford, newly-minted world authority on spiders and explorer of Gulf of Guinea biodiversity.  In the picture below, he is holding “bubba,” one of the three endemic tarantula species of São Tomé.

DR. Joel Ledford with Hysterocrates apostolicus.   D. Lin phot. GGI

Readers of this blog already know that when we talk about biodiversity, we are talking about everything living, not just the big fancy stuff like birds and giant begonias.  Many of the secrets of island evolution are to be unlocked through the study of small organisms.   I have just received some preliminary news from Dr. Didier Van den Speigel of the Royal Central African Museum in Belgium.  After Dr. Rowland Shelley of the North Carolina State Museum did a preliminary analysis of our GG IV millipede specimens, we sent them to Didier, a specialist on this group in the Old World.  Rowland had concluded that we had at least one new species of the genus Globanus from each island.

A millipede (not Globanus) phot.  from cephalopodiatrist.com

Didier has examined material from other museums and has concluded that, in fact, the genus Globanus itself is endemic, found nowhere else in the world but the islands of São Tomé and Príncipe.  We are still unsure of how many species our GG IV material represents, but what seems evident at this time is that they are all each other’s closest relatives.  Drs Van den Speigel and Shelley are in agreement that this turns out to be the case, it would represent a “species swarm,” much like the endemic earthworms of São Tomé (see July 2010 blog “Nightmares….”, for an explanation).  The work continues……

In my memorial to Abade last month, I described one of our early unsuccessful  searches for Newton’s rocket frog during GG I.

Newton’s rocket frog, Ptychadena newtoni.  D. Lin phot.  GGI

This widely distributed genus of about 50 species is found throughout sub-Saharan Africa and distinguished by a sharp snout, paired vocal sacs (lower arrow),  distinctive glandular ridges on the back (upper arrow) and very long legs.  In fact a member of this group from South Africa holds the world record frog jump of over 33 feet (10m)!  P. newtoni is one of São Tomé’s classic “island giants; at 76 mm (not including legs) a  São Tomé female is much larger than any specimens of mainland species on record.

After days of visiting known localities mostly in and near the town of São Tomé and finding them dry, heavily disturbed and frogless, one rainy evening two young boys led us to a vacant lot less than 200m from where we were living, and there were the frogs!   Ultimately, genetic analysis of these frogs established that they were, indeed, full endemic species, but also led John Measey, currently of South Africa, and a group of us to publish our rafting hypothesis in the Journal of Biogeography (2007 – see earlier blogs).

Our difficulty in finding this species in the northern lowlands of São Tomé (all of the known localities at the time) suggested to me that this may be the only endemic amphibian species on São Tomé that might be endangered due to human development.

Series of Ptychadena newtoni larvae from Java, Sao Tome.  RCD phot. GG II

However, during GG II we found a series of tadpoles at Java (elevation 595m) which we later determined belonged to this species (although no adults were seen).  Tadpoles are typically identified by various external characteristics, but especially by fine structures of the mouthparts. The drawings below are taken from a nearly completed manuscript that attempts to technically describe the tadpoles (larvae) of all the endemic island frog species; it has not been published because, even after all these years, we have still not found the larvae of the Príncipe giant treefrog, Leptopelis palmatus!

P. newtoni mouthparts from unpublished manuscript.

P. newtoni left lateral view from unpublished manuscript.

Our discovery of the Java larvae indicated that Newton’s rocket frog is not necessarily present only in the heavily developed northern lowlands.

Recently, a young biologist, Hugulay Maia, whom we first met during GG IV has found some new P. newtoni localities.

Hugulay Maia of ABS, doing tree work.  unknown photographer]

Hugulay is a member of Associação dos Biologos (ABS), a local group of biologists involved in biodiversity efforts on São Tomé. The group is led by Dr. Alzira Rodrigues of the Polytechnic Institute; other members you have met in this blog are Angus Gascoigne and Victor Bomfim.

Current P. newtoni localities: green = to 1992; pink = to date

Now, thanks to Hugulay’s observations (and photographs) we have a somewhat better idea of the distribution of Newton’s rocket frog.  Earlier known localities are in green and were published by a Swiss worker in 1992; our GG II Java locality and Hugulay’s new localities are in pink.  Hugulay’s data confirm that the species is not confined to the north.  He has observed it at Colonia Açoreana (labeled) and two more southerly spots, Angra Toldo Cavaleite and Roça Alinhança.

The data are still thin, but we can at least infer that Ptychadena newtoni is more widespread than originally thought.  Almost all of the mainland species breed in relatively still or slow-moving water, and it is reasonable to assume this is the case with Newton’s rocket frog.  All of the old localities (in green) are associated with lowland reaches of major water courses: the city localities are in the Agua Grande drainage; Hugulay Maia’s new records are all from the Ribeira Afonsa drainage, and the Diogo Vaz locality (green symbol in the NW) is from the small Agua Anambo, which parallels the larger, much faster Rio Maria Luiza to south.  Java our highest locality is on the Rio Abade, but the tadpoles were collected in a man-made pool in a roadside, partially dry creek bed, not in the river itself.   To assess the actual status of Newton’s rocket frog, I think we just need to look more closely in bodies of slow or still water along major rivers throughout the island.

The Parting Shot:

Dr. Joel Ledford: Spider hunters in repose. D. Lin phot.   GG I

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund, Hagey Research Venture Fund of the California Academy of Sciences, the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging, STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, Salvador Sousa Pontes and Danilo Barbero of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to export specimens for study, the continued support of Bastien Loloum of Zuntabawe  and Faustino Oliviera, Curator of the Herbarium at Bom Sucesso. Special thanks for the generosity of private individuals, George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen for helping make these expeditions possible.  Our expeditions can be supported by donations to “California Academy of Sciences Gulf of Guinea Fund”.