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Herbivorous insects colonising cyanogenic and acyanogenic Trifolium repens

Herbivorous insects colonising cyanogenic and acyanogenic Trifolium repens Insect herbivores colonizing cyanogenic and acyanogenic white clover plants were investigated. With the exception of aphids, the herbivores studied were infrequent visitors and failed to discriminate between the two phenotypes. Aphids, however, were two to three times more abundant on acyanogenic than cyanogenic plants. Evidence of visible insect feeding damage was identical for both phenotypes. The evidence suggests that the trait of cyanogenesis confers protection against herbivory by aphids and, possibly, other insects. Such protection would be most important at the seedling stage, but feeding of the insects studied would not lead directly to seedling mortality of either phenotype. Instead, mortality of weakened seedlings may result from other causes later in the season. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Heredity Springer Journals

Herbivorous insects colonising cyanogenic and acyanogenic Trifolium repens

Dritschilo, W; Krummel, J; Nafus, D; Pimentel, D
Heredity , Volume 42 (1) – Feb 1, 1979
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References (27)

Publisher
Springer Journals
Copyright
Copyright © 1979 by The Genetical Society of Great Britain
Subject
Biomedicine; Biomedicine, general; Human Genetics; Evolutionary Biology; Ecology; Cytogenetics; Plant Genetics and Genomics
ISSN
0018-067X
eISSN
1365-2540
DOI
10.1038/hdy.1979.5
Publisher site
See Article on Publisher Site

Abstract

Insect herbivores colonizing cyanogenic and acyanogenic white clover plants were investigated. With the exception of aphids, the herbivores studied were infrequent visitors and failed to discriminate between the two phenotypes. Aphids, however, were two to three times more abundant on acyanogenic than cyanogenic plants. Evidence of visible insect feeding damage was identical for both phenotypes. The evidence suggests that the trait of cyanogenesis confers protection against herbivory by aphids and, possibly, other insects. Such protection would be most important at the seedling stage, but feeding of the insects studied would not lead directly to seedling mortality of either phenotype. Instead, mortality of weakened seedlings may result from other causes later in the season.

Journal

Heredity – Springer Journals

Published: Feb 1, 1979

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