You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Costs of Exploiting Poisonous Prey: Evolutionary Trade-Offs in a Predator-Prey Arms Race
Edmund D. Brodie III and Edmund D. Brodie, Jr.
Vol. 53, No. 2 (Apr., 1999), pp. 626-631
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2640799
Page Count: 6
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Evolutionary trade-offs often are expected to arise between traits that share similar functions or resources. Such costs are well known from a variety of coevolutionary systems, but examples are conspicuously absent from predator-prey interactions. We present evidence of a trade-off between two disparate functions-predatory and antipredatory ability-in a species of garter snake that has evolved resistance to the neurotoxin of its prey. Patterns of among-family variation suggest a genetic basis to the trade-off. Both resistant and nonresistant populations of snakes exhibit the trade-off, suggesting that it stems from a fundamental aspect of organismal performance. This cost may help to explain the geographic mosaic of predator exploitative ability and prey defense that exists in this system.
Evolution © 1999 Society for the Study of Evolution