Journal
ECOLOGY LETTERS
Volume 23, Issue 11, Pages 1693-1714Publisher
WILEY
DOI: 10.1111/ele.13601
Keywords
Agricultural ecology; behavioural ecology; biological control; enemy-risk effects; natural enemies; non-consumptive effects; pest management; predation risk; predator-prey ecology; trophic cascades
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Funding
- USDA NIFA Predoctoral Fellowship [2019-67011-29710]
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Enemy-risk effects, often referred to as non-consumptive effects (NCEs), are an important feature of predator-prey ecology, but their significance has had little impact on the conceptual underpinning or practice of biological control. We provide an overview of enemy-risk effects in predator-prey interactions, discuss ways in which risk effects may impact biocontrol programs and suggest avenues for further integration of natural enemy ecology and integrated pest management. Enemy-risk effects can have important influences on different stages of biological control programs, including natural enemy selection, efficacy testing and quantification of non-target impacts. Enemy-risk effects can also shape the interactions of biological control with other pest management practices. Biocontrol systems also provide community ecologists with some of the richest examples of behaviourally mediated trophic cascades and demonstrations of how enemy-risk effects play out among species with no shared evolutionary history, important topics for invasion biology and conservation. We conclude that the longstanding use of ecological theory by biocontrol practitioners should be expanded to incorporate enemy-risk effects, and that community ecologists will find many opportunities to study enemy-risk effects in biocontrol settings.
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