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

The global extinction crisis faced by amphibians has been much in the news in recent years, as have threats to sea turtles, Madagascar’s tortoises, Asia’s freshwater turtles and other long-suffering groups.  In the USA, a number of reptile and amphibian species are also in dire straits despite, in some cases, federal protection.  I hope this article inspires both hope and action in my many conservation-minded readers.

Unprecedented Agreement May Help 757 Species

Following a slew of lawsuits by the Center for Biological Diversity (CBD), the Federal government has agreed to speedily consider protecting an additional 757 native species under the Endangered Species Act (ESA).  The CDB employs an attorney who deals solely with amphibians and reptiles, and the agreement is said to be “airtight” and legally enforceable.

This agreement is an important step, as the ESA is our most powerful wildlife law.  Indeed, ESA listings have proven vital to the continued survival of many species.  For example, a recent CBD study of 110 ESA-protected species showed that 90% of them were recovering “on time”, according to the goals set at the original listing…not bad, considering what is happening to rhinos and other “protected” species elsewhere! Read More »

The incredible diversity of life in tidal creeks and rivers has attracted me since childhood.  And while invertebrates and fishes predominate, areas where fresh and salt water meet hold wonderful surprises for reptile enthusiasts as well.  Today I’d like to discuss a turtle that I often find in brackish water habitats, and which seems to be evolving unique adaptations to survive there – the Snapping Turtle, Chelydra serpentina.

A Turtle Banquet

The Long Island (NY) tidal creeks (please see photo) that I frequent seem “paved” with crabs, marine worms, snails, bottom fishes, mussels, clams, shrimp and other foods that could be easily exploited by turtles.  In fact, research indicates that at least one marine turtle, the Kemp’s Ridley, actively migrates to the LI Sound, gaining up to a pound per week during the time it remains there.  The Snapping Turtles I’ve seen in such habitats have been quite large, and I can’t help but think that abundance of high quality, easily-caught food must play a role in their presence.

I’ve even been fortunate enough to come upon a family of River Otters in one tidal creek, a species long gone from LI but now making a comeback.  I’ve worked with captive otters, and can attest that if they are present, there’s lots of food about – their appetites are unbelievable! Read More »

Decades of work in zoos and the pet trade has, I believe, given me a unique perspective on the contributions that each can make to amphibian conservation.  Over the years, I have been greatly influenced by the work of private keepers who, in some cases, bred rare species long before zoos. Indeed, numerous husbandry techniques used in zoos originated in the private sector. In general, however, the pet trade focuses on pets and conservationists focus on conservation. But Wikiri, an enterprise formed to support amphibian conservation and research, combines the best of both worlds by using captive-bred frogs to promote its goals. In doing so, Wikiri has broken new ground in addressing the amphibian extinction crisis.

Amphibian Declines

The threat currently facing amphibians are unprecedented. At least 200 species have become extinct in recent years, prompting some to compare this “Sixth Extinction Crisis” to the disappearance of the dinosaurs.  Read More »

Today I’d like to cover a snake that, while not suitable as a pet, stands out in the minds of many as North America’s most impressive serpent – the Eastern Diamondback (Crotalus adamanteus). In my youth, the nearby Staten Island Zoo’s Reptile House was under the direction of the legendary Carl Kauffeld.  The collection contained every known rattlesnake species but, somehow, a massive pair of Eastern Diamondbacks stood apart.  Several years ago, I was thrilled to be chosen as consultant for the renovation of this building , and Rattlesnakes, including the Eastern Diamondback, again take center stage there.

Description

The record length of this largest of the world’s 33 rattlesnake species is 8 feet, 3 inches; most adults top out at 3-6 feet.   In the USA, only the Indigo, Bull, Gopher and Black Rat Snakes approach or, very rarely, exceed this measurement.

The background color of this heavy-bodied, venomous snake ranges from olive through brown to (rarely) near-black.  The back is patterned in white-centered dark diamonds that are sharply outlined in cream or yellow.

Captives have lived in excess of 22 years, but longevity in the wild has not been well-studied. Read More »

The Senegal Chameleon (Chamaeleo senegalensis) has long been common in the pet trade, yet there remain significant roadblocks to longevity and breeding. I recently re-read a 1990 study on prey choice in this species. I then considered it in light of newer research that established a link between Vitamin D levels and chameleon basking behavior. I believe both contain important findings that may be applicable to many species.

“What, grasshoppers again”!

In the study that examined prey choice in Senegal Chameleons (J. of Herpetology: V.24, N.4: p.383), different groups of chameleons were fed solely on either Long-Horned Grasshoppers or House Crickets. Over a period of several days, those lizards feeding upon crickets showed a strong preference for grasshoppers, and those on grasshopper-only diets favored crickets.

I have also observed this in other chameleon species under my care at the Bronx Zoo, and in a variety of reptiles and amphibians. As long as the species is acceptable, novel prey usually causes a very strong feeding response. Indeed, zookeepers and hobbyists commonly say that captive herps “become bored” with crickets, mealworms and other staples. Read More »