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Title: Remote copulation: Male adaptation to female cannibalism
Authors: Li, D. 
Oh, J.
Kralj-Fišer, S.
Kuntner, M.
Keywords: Coevolution
Genital emasculation
Sexual cannibalism
Sexual conflict
Issue Date: 23-Aug-2012
Citation: Li, D., Oh, J., Kralj-Fišer, S., Kuntner, M. (2012-08-23). Remote copulation: Male adaptation to female cannibalism. Biology Letters 8 (4) : 512-515. ScholarBank@NUS Repository.
Abstract: Sexual cannibalism by females and associated male behaviours may be driven by sexual conflict. One such male behaviour is the eunuch phenomenon in spiders, caused by total genital emasculation, which is a seemingly maladaptive behaviour. Here, we provide the first empirical testing of an adaptive hypothesis to explain this behaviour, the remote copulation, in a highly sexually cannibalistic orb-web spider Nephilengys malabarensis. We demonstrate that sperm transfer continues from the severed male organ into female genitals after the male has been detached from copula. Remote copulation increases the total amount of sperm transferred, and thus probably enhances paternity. We conclude that the mechanism may have evolved in response to sexual cannibalism and female-controlled short copulation duration. This journal is © 2012 The Royal Society.
Source Title: Biology Letters
ISSN: 17449561
DOI: 10.1098/rsbl.2011.1202
Appears in Collections:Staff Publications

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