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Journal Article

On the Evolution of Host Specificity in Phytophagous Arthropods

Elizabeth Bernays and Michelle Graham
Ecology
Vol. 69, No. 4 (Aug., 1988), pp. 886-892
Published by: Wiley on behalf of the Ecological Society of America
DOI: 10.2307/1941237
Stable URL: http://www.jstor.org/stable/1941237
Page Count: 7
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On the Evolution of Host Specificity in Phytophagous Arthropods
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Abstract

We argue that generalist natural enemies of herbivorous insects provide a major selection pressure for restricted host plant range. The significance of plant chemistry is discussed in terms of regulating behavior, while the chemical coevolutionary theories are considered to be of limited value.

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