That Reptile Blog – Reptile, Amphibian and Exotic Pet Care and Information

The US Fish & Wildlife Service is currently (December, 2014) seeking Convention on International Trade in Endangered Species (CITES) protection for the Common Snapping Turtle and the Florida, Spiny, and Smooth Softshell Turtles. Each is being collected from the wild in ever increasing numbers and exported to Asian food and medicinal markets. With so many Asian species having been decimated by over-collection (please see article below), pressure on US species will surely increase. While several of the turtles involved are perceived to be common, recent export figures are grim. For example, approximately 2,178,000 live, wild-caught Snapping Turtles were exported from the USA between 2009 and 2011 (this excludes processed meat and eggs).

 

Unfortunately, government regulation sometimes raises hackles among pet keepers. Throughout my career as a herpetologist, I’ve worked on numerous cooperative ventures between government agencies and private keepers – all showed promise, but were also fraught with red tape and other problems. In my experience, many pet owners are pro-conservation, but remain frustrated by laws that prevent the ownership and breeding of at-risk species. Today I’ll outline the proposed CITES listing; your thoughts on the subject would be most appreciated – please post below.

 

The Scope of the Problem

When I began looking into the mercury content of food trade turtles some years ago (very high, by the way!), Florida Softshell Turtles (Apalone ferox) dominated the NYC markets. Today, one more commonly sees the Chinese Softshell (Pelodiscus sinensis). Although rare within its natural range, this hardy turtle is being bred in huge numbers on farms in China. This development may have eased some of the pressure on US natives, but certainly has not yet eliminated over-harvesting.

 

Florida Softshells have benefitted from canal construction in Florida, and have expanded their range as a result. However, they are quite easy to trap or catch via line. From 2009 to 2011 (the most recent years for which figures are available), approximately 792,000 live Florida Softshells and 260,000 eggs were exported from the USA.

 

Spiny and Smooth Softshell Turtles (Apalone spinifera & A. mutica) are not as common as their larger cousin, and harder to collect. Several subspecies are rare, and almost all populations are in decline due to factors unrelated to hunting – habitat loss, stream channelization, etc. Still, approximately 158,000 live Spiny Softshells were captured and shipped to Asia from 2009 to 2011. As mentioned above, the Common Snapping Turtle (Chelydra serpentina) leads the pack, with over 2,000,000 wild-caught individuals exported during the same period. Huge quantities of processed turtle meat are also sold to overseas (and some local) markets.

 

What is the Effect of a CITES Listing?

If the US F&W Service’s proposal is approved, the 4 species would be listed on Appendix III of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). This primarily affects international trade, and opens up a monitoring, rather than a regulatory, process.

 

Pet-keeping per se is not affected. However, if monitoring reveals that a species is in need of further protection, federal and state laws that prohibit private ownership may be implemented. This is what worries some pet owners.

 

In addition to enhanced monitoring, an Appendix III listing has the following effects:

 

1. Exporters must prove that the turtles were collected and shipped in accordance with all relevant state laws.

 

2. Live turtles must be packed and shipped humanely, in accordance with the regulations established by the International Air Transport Agency.

 

3. Foreign governments will theoretically give greater priority to the inspection of imported CITES-listed species. As a practical matter, most tend to cooperate more readily with the USA when protected species are involved.

 

If past experience is any guide, there will be many conflicting opinions concerning this topic. This is very useful, so please be sure to post your thoughts below. You can also register opinions with the US F&WS until 12-31-14; please let me know if you need more info.

 

 

 

Further Reading

The Asian Turtle Crisis

 

Text of the CITES Proposal

The three species in the genus Hydrosaurus, commonly referred to as Sailfin Dragons, are among the most spectacular lizards on earth.  Even after decades of working with all manner of reptiles in zoos and the field, I’m still stopped in my tracks by the sight of one.  Unfortunately, the coastal swamps and forests they inhabit are being developed out of existence, and captive breeding is not common.  Recently, genetic studies of lizards illegally held in Philippine pet markets surprised herpetologists by bringing to light a new species of Sailfin Lizard.

 

The Currently-Recognized Species of Sailfin Dragons

The Philippine Sailfin Lizard, Hydrosaurus pustulatus, is the species most commonly seen in the pet trade.  Stoutly built and reaching over 3 feet in length, males sport huge crests along the back and tail, and are clad in several shades of green, neon purple, and red-tinted blue.  Small wonder they are high on the wish-lists of lizard enthusiasts worldwide (and “large wonder”, in my opinion, why zoos do not pay them more heed!).

 

The Amboina Sailfin, H. amboinensis, is found in Indonesia and New Guinea; its occurrence in the Philippines is debated.  Weber’s Sailfin Lizard, H. weberi, appears limited to the Indonesian islands of Ternate and Halmahera.

 

Unfortunately, Sailfin Lizards are a poor choice for all but experienced keepers with a great deal of space.  They require huge enclosures and usually remain high-strung, even after years in captivity. Today, as in years past, nearly all in the trade are wild-caught, and captive breeding is very rare.

 

An Uncertain Future for Sailfin Lizards

In order to access the Sailfin Lizards’ status and formulate a conservation strategy, herpetologists from the University of Oklahoma surveyed natural habitats and pet markets in the Philippines (Biological Conservation, V 169, Jan, 2014).  The coastal marshes and riverside forests upon which these lizards depend were found to be under immense pressure from logging, fishery expansion and other forms of development.  Only 10% of the Philippine Sailfin Lizard’s habitat lies in protected areas – the rest is open to human activities. The species is classified as Vulnerable by the IUCN.

 

Illegal collection also seems to be a problem, as black market animals were easy to locate, and field surveys of easily-accessible habitats revealed few adult specimens.

 

A New Species Emerges

Animal markets in Manila seem to be the main source of entry into the pet trade.  DNA studies of scale and nail-clippings from lizards found in these markets revealed that Sailfins inhabiting Sulawesi, Indonesia are genetically distinct from those in New Guinea; both are now classified as H. pustulatus.  The newly-described species has not yet been named.

 

Why Bother with Genetic Identification?

“Discovering” new species via genetic research is becoming ever more common, and I think there’s sometimes a tendency to regard this as less noteworthy than finding an animal that is “new” in the sense of having never been seen, or seen only by people living within its habitat.

 

However, it’s important to bear in mind that genetic differences evolved over millions of years undoubtedly have survival value.  Well-known examples abound – Green Anoles from southern Florida cannot tolerate north Florida winters, venoms of rattlesnakes with wide ranges differ radically (in response to prey defenses) from place to place, and so on.  These unnoticed but very significant differences can greatly affect conservation plans and captive breeding attempts.

 

Also, properly identifying a species can have important implications where legal protection is concerned.  Considering the horrific confusion and red tape that plagues international conservation laws, any means of introducing order and clarity should be welcomed.

 

A Sailfin Dragon “Substitute” for Lizard Fans

As mentioned earlier, Sailfin Lizard ownership should not be undertaken lightly, as they are quite demanding pets.  However, those who are enamored of large, beautifully-colored lizards bearing “dragon-like” crests do have excellent alternatives – the Green Basilisk, Basiliscus plumifrons and the Asian Water Dragon, Physignathus cocincinus.  You can read more about the care and breeding of these very impressive lizards in the articles linked below.

 

 

Further Reading

Breeding the Green Basilisk and its Relatives

Keeping the Asian Water Dragon

 

Salamanders and newts, often overlooked by pet keepers, zoos and environmentalists alike, are getting some much-needed exposure this year.  Led by the Partnership for Amphibian and Reptile Conservation, a consortium of environmental groups has designated 2014 as the Year of the Salamander.  I’m very pleased, as past efforts, including the Year of the Snake and the Year of the Lizard, have done much to advance reptile conservation.

 

Even among my Bronx Zoo colleagues, I was considered somewhat strange when I began writing a book on newt and salamander natural history and captive care some 17 years ago.  But I have been very lucky, salamander-wise.  Perhaps because so few people were interested, many fascinating opportunities came my way.  Whether crossing the USA and Japan in search of my favorite species or caring for those in my home collection – several of which are now aged 25 to 35 – I’ve never tired of learning about them, and remain as passionate today as I was in childhood.

 

Salamander Central

Salamander enthusiasts based in the USA are quite fortunate, as more species live here than anywhere else on earth.  In fact, the southern Appalachian Mountains, a salamander hotspot, are home to 10% of the world’s known species.  And the sheer diversity of their sizes, lifestyles and behaviors is beyond belief – colorless cave-dwellers that never see the light of day, yard-long eel-like species armed with sharp teeth, tiny lichen-colored rock dwellers, colorful beauties, terrestrial giants large enough to raid mouse nests and so many more.

 

My zoo-keeper and hobbyist friends in other countries are astounded that those living in the epicenter of salamander diversity do not devote more of our efforts to these amazing creatures.  I’ve written about some of our species in other articles…please post below and I’ll send links.

 

Year of the Salamander Activities

The Year of the Salamander effort is spearheaded by Partners in Amphibian and Reptile Conservation (PARC), and was preceded the Year of the Turtle, Snake and Lizard. This year, PARC will be joined by the Center for Conservation Biology, the Association of Reptile and Amphibian Veterinarians, Amphibian Ark, and other notables.  In addition to field research and captive breeding programs, public education will be a major component of each group’s activities.

 

I’m happy to see that input from interested non-professionals will be solicited.  This is an all-too-rare step, despite the fact that professionals with financial resources cannot begin to address the conservation needs of the world’s threatened amphibians.

 

Salamander Populations Plummeting Worldwide

Frog extinctions have been very much in the spotlight in recent years.  Fueled by emerging diseases (please see below) that have exacerbated the threats posed by habitat loss and other long-standing concerns, frog declines have been documented around the globe.

 

Salamanders, which are usually harder to find and study (after all, none advertise their presence by croaking!), are likely in just as much trouble as frogs.  In fact, the IUCN classifies 49.8% of the world’s salamanders as threatened or endangered, as compared to 31.6% of the world’s frogs!  Considering that salamanders are so poorly studied, the conservation picture could actually be far bleaker than the IUCN’s frightening statistics indicate.  Hopefully, the Year of the Salamander effort will divert much needed interest and funds to salamander conservation.

 

Specific Threats

The future of the world’s salamanders and newts is put in jeopardy by many of the same problems that afflict frogs – habitat loss, road mortality during the breeding season, pollution, invasive species (especially fish) and others.  Unique threats also exist – for example, Tiger Salamanders, classified as endangered in some US states, are legally used as fish bait in others (please see article below)!

 

While the devastating effects of Chytrid and Ranavirus infections on frog populations are well known, related salamander studies are in short supply.  However, in 2013, a new strain of Chytrid was found to be killing Fire Salamanders in Europe…I fear that this is merely the tip of the iceberg.

 

Help and Input Needed

Please check out my salamander conservation articles, some of which are linked below, and share your thoughts and observations by posting in the comments section of this article.  A book I’ve written, which addresses both natural history and captive care, may also be useful to those interested in helping these amazing amphibians.

 

Further Reading

Salamander larvae Still Being Used as Fish Bait in the USA

New Population of Endangered Axolotls Found…in Mexico City!

Twelve Rare US Amphibians in Need of Protection

 

 

 

 

Over 200 species of amphibians have become extinct in the last 30 years, a crisis looms for Asian turtles, and recent studies suggest global declines in snake and lizard populations (please see this article).  Conservationists in the USA should feel somewhat optimistic about native species, because the Endangered Species Act (ESA) has prevented the extinctions of 99.9% of the species listed.  But the “listing” process leaves much to be desired.  Many reptiles and amphibians that are eligible for protection under the ESA languish on waiting lists…for over 30 years in the case of some, such as the Dune Sagebrush Lizard!  Shockingly, at least 42 other native species became extinct during that same period!

Private reptile and amphibian keepers can also play a role in conservation.  Whether through breeding, volunteering or following a career in herpetology, there is much that we can do.  Please see the articles linked below (Further Reading) for detailed information. Read More »

Researchers working in a little-studied rainforest have uncovered a minute Poison Frog that seems restricted to a tiny range within a very unique habitat.  Labeled a “micro-endemic”, the newly-described frog may be threatened by plans to encourage ecotourism in the area.  Its species name, “assimibilis”, means “that may disappear”.  The region in which it lives, northern South America’s Guyana Shield, is home to 148 amphibian and 176 reptile species…and herpetologists believe that many more await discovery

A Biodiversity Hotspot

The term “lost world” was first applied to the Guyana Shield (please see photo) in Sir Arthur Conan Doyle’s classic 1912 book of the same name, and biologists find it equally appropriate today.  Home to 25% of the world’s undisturbed tropical rainforests, the area supports a mind-boggling array of unique animals and plants.

Included among herps described so far are 11 caecilians, 4 crocodilians, 4 amphisbaenians (worm lizards, please see photo), 97 snakes and 56 lizards.  Many of the 137 resident frogs are endemic (found nowhere else), as are approximately 15% of the reptiles.  Some are known from only 1-5 specimens, and it is assumed that many have yet to be seen by herpetologists. Read More »