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Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology

BMC Ecology

By:
, , , and
DOI: 10.1186/1472-6785-9-5

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Abstract

Earlier models of plant-herbivore interactions relied on forms of functional response that related rates of ingestion by herbivores to mechanical or physical attributes such as bite size and rate. These models fail to predict a growing number of findings that implicate chemical toxins as important determinants of plant-herbivore dynamics. Specifically, considerable evidence suggests that toxins set upper limits on food intake for many species of herbivorous vertebrates. Herbivores feeding on toxin-containing plants must avoid saturating their detoxification systems, which often occurs before ingestion rates are limited by mechanical handling of food items. In light of the importance of plant toxins, a new approach is needed to link herbivores to their food base. We discuss necessary features of such an approach, note recent advances in herbivore functional response models that incorporate effects of plant toxins, and mention predictions that are consistent with observations in natural systems. Future ecological studies will need to address explicitly the importance of plant toxins in shaping plant and herbivore communities.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology
Series title:
BMC Ecology
DOI:
10.1186/1472-6785-9-5
Volume
9
Year Published:
2009
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
BMC Ecology