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Bearded Dragon Health – Atadenovirus (Wasting Disease, Star-Gazing)

Bearded DragonBearded Dragons are among the hardiest of all lizards, and very well-suited to captivity. However, a serious viral disease to which they are prone is well-established among populations in theUSA and several other countries.  Unfortunately, Atadenovirus infections, also known as Wasting Disease and Star Gazing, are incurable and difficult to detect by symptoms alone. Related viruses afflict Blue-Tongued Skinks, Fat-Tailed Geckos, Leopard Geckos, chameleons and other reptiles, birds and mammals, but infections are most commonly diagnosed in Bearded Dragons.

Infection and Transmission

Atadenoviruses are highly contagious, and spread via body contact and improperly cleaned tools or terrarium accessories. Female Bearded Dragons may also pass infections along to their young. There is evidence that some Bearded Dragons harbor the virus while remaining otherwise healthy, and that sensitivity varies among individuals that do become ill. Read More »

Inclusion Body Disease or Stargazing – Pet Owners Aid Vital Research

Diamond PythonInclusion Body Disease (IBD), or “Stargazing”, is an incurable ailment that afflicts captive Boa Constrictors, Ball Pythons and related snakes (please see below for species list).  As a child with a burgeoning snake collection, I was warned about it by older keepers, and then faced the perplexing condition as I began to work for animal importers and zoos.  Always, the scenario remained the same – once symptoms appeared, the snake died. In zoo collections, much time and expense was spent in testing snakes that had been exposed to IBD, with euthanasia being the usual course of action for those found to be positive.  However, snake keepers now have cause for guarded optimism – a ground-breaking finding published this week (August, 2012) may pave the way for a treatment.  The sequence of events leading up to the discovery involves pet owners, gene-sequencing competitions and a host of twists and turns, and shows that alert, dedicated snake enthusiasts can make vital contributions to conservation and research. Read More »

Chorus Frogs and Chytrid Bacteria – a Look at the Confusing new Reports

Rana mucosaAre Pacific Chorus Frogs, Pseudacris regilla, driving other amphibians to extinction? A recent study revealed that the tiny frogs often carry a fungus (Batrachochytrium dendrobatidis, or Chytrid) that has been implicated in the extinction of 200+ amphibian species. Chorus Frogs seem largely immune to the disease, but may spread it to other species that share their habitat, including the endangered Mountain Yellow-Legged Frog, Rana mucosa. However, I believe there is more to the story…

Resilient Chytrid Carriers

Researchers from San Francisco State University and the San Diego Zoo have confirmed high levels of Chytrid fungus among Pacific Chorus Frogs in California’s Sierra Nevada Mountains. Unlike many amphibians, Chorus Frogs seem relatively unaffected by the fungus. Read More »

New Test for Cryptosporidiosis, an Incurable Disease of Snakes and Lizards

Corn Snake and PreyA decade or so ago, Cryptosporidiosis became recognized as a major concern in captive snake and lizard collections.  Caused by a one-celled parasite known as Cryptosporidium varanii, the disease remains incurable to this day.  At the Bronx Zoo, where I worked at the time, tests showed that many snakes already in our collection, along with wild and pet reptiles, might be harboring Cryptosporidium.  But diagnosis was difficult and errors were common, resulting in the institution of expensive and time-consuming isolation protocols for new and sick animals.  So I was happy to learn of a newly devised test that ensures early, accurate diagnosis of Cryptosporidium…it will surely prove useful to pet keepers and zoos alike.

Crypto and the Pet Trade

A number of factors render Cryptosporidiosis as a major concern, including the popularity of reptile pets and the fact that the parasite can be transferred to people.  While not often of major concern to healthy adults, Crypto, as it came to be known, is a danger to immune-compromised individuals (please see article below).  A recent survey of 672 pets revealed that 1 in 6 of the Corn Snakes and 1 in 12 of the Leopard Geckos tested harbored Crypto in one form or another.  Read More »

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