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AmphibiaWeb provides information on amphibian declines, natural history, conservation, and taxonomy.






Species of the Week:
Eleutherodactylus coqui


Amphibian News
In 1983, Narins and Smith found that body size and call characteristics in males of the Puerto Rican species Eleutherodactylus coqui (the coqui frog) vary with elevation. At warmer, lower elevations, frogs were small, with short, high-pitched calls, whereas high-elevation frogs were larger, with longer and lower-pitched calls. Fast-forward 23 years to 2006: Narins and Meenderink (2014) re-studied the same sites; at a given altitude, today's frogs are smaller with shorter and higher-pitched calls. Based on temperature data, they suggest that these changes in calls result from a warming climate that has displaced populations to higher, cooler regions. If these climatic changes continue, male calls may change to the point where females no longer recognize and respond to the mating calls, which likely would be detrimental to mating success and its survival.
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Current number of amphibian species: 7,259 (Apr 15, 2014) Newly added species