Zoo Releases Endangered Puerto Rican Crested Toad Tadpoles Into the Wild


After breeding critically endangered Puerto Rican Crested Toads, San Antonio Zoo has released over 5,000 tadpoles back into their native Puerto Rican habitat.

Once believed to be extinct, Puerto Rican Crested Toads have only one remaining population, fluctuating between 1,000 and 3,000 adult toads in the Guanica National Forest of southern Puerto Rico. Conservation of this endangered species and so many others help to save wildlife and promote biodiversity across the globe. Preserving natural ecosystems and their native inhabitants assist in maintaining a critical ecological balance that protects sources of medications keeping crops healthy and boosting the economy. The effects are far-reaching.

"Saving Puerto Rican Crested Toads is one of almost 20 research and conservation programs San Antonio Zoo has partnered with to create a global community that loves, engages with, acts for, and protects animals and the places where they live," said Tim Morrow, President & CEO of San Antonio Zoo. "We're honored to be a part of this initiative. It's a great testament to this community's dedication to wildlife protection as well as the depth of our abilities."

San Antonio Zoo began breeding Puerto Rican Crested Toads in 2010 as part of The Puerto Rican Crested Toad Conservancy (PRCTC) with the Association of Zoos and Aquariums (AZA). The PRCTC conducts island-wide education outreach, protection, and restoration of existing habitats, new ponds to support six self-sustaining metapopulations, and now reintroducing tadpoles back into their native Puerto Rican environment with San Antonio Zoo. Since 2010, San Antonio Zoo has released 16,308 tadpoles back into their native Puerto Rican habitat. In working with zoos across the globe, conservationists aim to attain enough genetic diversity to promote a population that will last for at least one hundred years. This is critical as U.S. Fish and Wildlife deems the toad's biggest threats to be habitat loss and introduced species.

"We are so proud to be part of the successful recovery of the critically endangered Puerto Rican Crested Toad," said Alan Kardon, Vice President, Animal Care & Horticulture for San Antonio Zoo. "The Puerto Rican Crested Toad is a particularly intriguing species and one that has been challenging to track in the wild due to their nocturnal nature and limited numbers. Their most notable feature is a long, upturned snout with a crest above the eyes."

Photos: San Antonio Zoo


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