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A grey tree frog (Hyla versicolor).

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A grey tree frog (Hyla versicolor). Amphibian species are declining globally, and pesticides may play a role, but their concentrations are often low in nature. Carbaryl is a common pesticide that can become more lethal for frogs under certain environmental conditions. A recent study has found that predatory stress, a common pressure for most amphibians, can make carbaryl exposure much more deadly to gray tree frogs. This suggests that apparently safe concentrations of pesticides can become more deadly to some amphibian species when combined with predator cues. This photograph originally appeared on the cover of Ecological Applications (13:4) in December of 2003.
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Format
Primary or BEN resource type
Discipline Specific Core Concepts
Life science discipline (subject)
Keywords frog, biodiversity loss, decline, pesticide, predation, carbaryl, lethal, dose, sublethal, nonlethal
Key taxa grey tree frog, Hyla versicolor
Audience
Intended End User Role
Language
Educational Language
Pedagogical Use Description This photograph could be used to illustrate grey tree frogs or amphibians, or it could be used as a starting point for a discussion about global amphibian declines.
Primary Author Controlled Name
Primary Author Affiliation Department of Ecology, University of Pittsburgh
Primary Author email relyea@pitt.edu
Rights Copyright 2003 by the Ecological Society of America.
Date Of Record Submission 2008-04-08

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