Annual Review of Entomology (2019) 64, 259-276

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Paul K. Abram, Jacques Brodeur, Alberto Urbaneja and Alejandro Tena (2019)
Nonreproductive effects of insect parasitoids on their hosts
Annual Review of Entomology 64, 259-276
Abstract: The main modes of action of insect parasitoids are considered to be killing their hosts with egg laying followed by offspring development (reproductive mortality), and adults feeding on hosts directly (host feeding). However, parasitoids can also negatively affect their hosts in ways that do not contribute to current or future parasitoid reproduction (nonreproductive effects). Outcomes of nonreproductive effects for hosts can include death, altered behavior, altered reproduction, and altered development. On the basis of these outcomes and the variety of associated mechanisms, we categorize nonreproductive effects into (a) nonconsumptive effects, (b) mutilation, (c) pseudoparasitism, (d) immune defense costs, and (e) aborted parasitism. These effects are widespread and can cause greater impacts on host populations than successful parasitism or host feeding. Nonreproductive effects constitute a hidden dimension of host–parasitoid trophic networks, with theoretical implications for community ecology as well as applied importance for the evaluation of ecosystem services provided by parasitoid biological control agents.
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Database assignments for author(s): Alejandro Tena, Paul K. Abram, Alberto Urbaneja

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.