Inter- and Intrasexual Interactions in Anoplophora glabripennis (Coleoptera: Cerambycidae) and the Impact of Different Sex Ratios

Journal of Economic Entomology
M A Keena, V Sánchez

Abstract

The behaviors of Anoplophora glabripennis (Motschulsky) (Coleoptera: Cerambycidae) during inter- and intrasexual interactions between both solitary and paired individuals at different sex ratios were observed on Acer platanoides L. (Sapindales: Sapindaceae) branches in the laboratory. Intrasexual contact was generally ignored by females, but between males resulted in battles from which one male ultimately retreated. When male size differed, larger males won battles, whereas equally sized males split the wins and battled longer. When males initiated intersexual contact, they quickly found and mounted the female. The female apparently determined if and how long the male could copulate with her by controlling access to her genital opening and males would eventually dismount if the female remained unreceptive. After successful copulation, males ignored female intruders and fought off male challengers, generally without dismounting. Some males dismounted females without attempting to copulate. Individual age and size were not predictive of either female or male choice in a mate. Mating duration was affected by both female receptivity and sex ratios present. Male interruptions of the pair shortened time in copula. Male-skewed sex rat...Continue Reading

References

Dec 22, 2009·Environmental Entomology·M E NehmeK Hoover
Apr 5, 2011·The American Naturalist·Laura K WeirJeffrey A Hutchings
Feb 11, 2014·Journal of Chemical Ecology·Kelli HooverAijun Zhang
Feb 9, 2018·Journal of Economic Entomology·M A Keena, V Sánchez

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Citations

Jun 4, 2021·Journal of Chemical Ecology·Tian Xu, Stephen A Teale

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