The Effect of Trematode Infection on Amphibian Limb Development and Survivorship

Author:

Johnson Pieter T. J.1,Lunde Kevin B.1,Ritchie Euan G.2,Launer Alan E.1

Affiliation:

1. Center for Conservation Biology, Department of Biological Sciences, Stanford University, Stanford, CA 94305–5020, USA.

2. Department of Zoology and Tropical Ecology, James Cook University of North Queensland, Townsville, QLD 4811, Australia.

Abstract

The causes of amphibian deformities and their role in widespread amphibian declines remain conjectural. Severe limb abnormalities were induced at high frequencies in Pacific treefrogs ( Hyla regilla ) exposed to cercariae of a trematode parasite ( Ribeiroia sp.). The abnormalities closely matched those observed at field sites, and an increase in parasite density caused an increase in abnormality frequency and a decline in tadpole survivorship. These findings call for further investigation of parasite infection as a cause of amphibian deformities in other sites and species.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference27 articles.

1. Deformed Frogs Leap Into Spotlight at Health Workshop

2. Schmidt C. W., Environ. Sci. Technol. 31, 324A (1997).

3. Northern Prairie Wildlife Research Center North American Reporting Center for Amphibian Malformations Jamestown ND (www.npwrc.usgs.gov/narcam) (version 23MAR99).

4. J. E. Tietge M. J. Lannoo V. Beasley Discussion of Findings Relative to Meeting Objectives (www.im.nbs.gov/naamp3/papers/60df.html) presentation given at the Third Annual Meeting of the North American Amphibian Monitoring Program 14 November 1996 to 14 February 1997 (www.im.nbs.gov/naamp3/naamp3.html).

5. Wake D. B., Trends Ecol. Evol. 13, 379 (1998).

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