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The Evolution of Insect Mating Systems$
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David Shuker and Leigh Simmons

Print publication date: 2014

Print ISBN-13: 9780199678020

Published to Oxford Scholarship Online: October 2014

DOI: 10.1093/acprof:oso/9780199678020.001.0001

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The evolution of polyandry

The evolution of polyandry

Chapter 9 The evolution of polyandry
The Evolution of Insect Mating Systems

Rhonda R. Snook

Oxford University Press

Polyandry is widespread, but its origin and maintenance remains enigmatic. Direct benefits arising from polyandry are easy to understand, but the recent emphasis on sexual conflict over mating decisions suggests that polyandry to gain indirect benefits either through intrinsic male quality or through genetic compatibility is limited. Meta-analyses have found strong support for direct benefits and weak support for indirect benefits in insects, but some individual studies show that indirect benefits can outweigh both direct costs and benefits. A quantitative genetics framework must recognize that the economy of polyandry is context dependent, changing in response to spatio-temporal variation in ecology. Experimental evolution and genomics techniques have improved our understanding of polyandry, but they are currently limited to only a few model insect organisms. One challenge for future research is to integrate these techniques and observations into a framework that predicts the cost:benefit relationship of female multiple mating

Keywords:   polyandry, direct benefits, indirect benefits, intrinsic male quality, genetic compatibility, quantitative genetics, genomics, experimental evolution

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