Variations in pesticide tolerance: Chapter 16

By:  and 
Edited by: Michael Lannoo



A growing body of evidence suggests that a number of amphibian populations have declined in recent years. The cause of these population declines has been difficult to establish because in some instances only a single species is declining while sympatric species are thriving. This chapter discusses the results of research that has been conducted to determine the degree of variation present in amphibians with respect to their response to insecticide exposure. The study assessed the degree of variation in response to an anthropogenic stressor among and within species of frogs in the family Ranidae, focusing on the variation in tolerance of tadpoles to the insecticide carbaryl. Carbaryl acts by inhibiting nervous system acetylcholinesterase, which is a common mode of action among insecticides; thus, carbaryl can serve as a model chemical with which to examine amphibian responses. The study also analyzed variation in a hierarchical fashion to identify where variation was the greatest: among nine ranid species, among populations within a single species, and within populations of southern leopard frogs.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Variations in pesticide tolerance: Chapter 16
Chapter 16
ISBN 9780520235922
DOI 10.1525/california/9780520235922.003.0016
Year Published 2005
Language English
Publisher University of California Press
Publisher location Berkeley, CA
Contributing office(s) Columbia Environmental Research Center
Description 3 p.
Larger Work Type Book
Larger Work Title Amphibian declines: The conservation status of United States species
First page 93
Last page 95