Please use this identifier to cite or link to this item:
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Sib-mating does not lead to facultative sex ratio adjustment in the parasitoid wasp, Nasonia vitripennis
Authors: Shuker, David M
Reece, Sarah E
Whitehorn, Penelope R
West, Stuart A
Contact Email:
Keywords: kin discrimination
local mate competition
Nasonia vitripennis
sex allocation
sex ratio
Issue Date: 2004
Publisher: Evolutionary Ecology
Citation: Shuker DM, Reece SE, Whitehorn PR & West SA (2004) Sib-mating does not lead to facultative sex ratio adjustment in the parasitoid wasp, Nasonia vitripennis, Evolutionary Ecology Research, 6 (3), pp. 473-480.
Abstract: Sex ratio theory predicts that in haplodiploid species, females should lay a relatively more female-biased offspring sex ratio when they mate with a sibling compared with when they mate with a non-relative. This is because in haplodiploids, inbreeding leads to females having greater relatedness to daughters relative to sons. This prediction has only been tested in the parasitoid waspNasonia vitripennis, where no support for this prediction was found. However, a limitation of this previous work is that it was carried out with only two females laying eggs per patch. This is a problem, because in this case the predicted difference in the offspring sex ratio is small and therefore hard to detect. We addressed this problem by utilizing a situation in which larger sex ratio differences are predicted – five females laying eggs per patch. Consistent with the previous results, we also found that the offspring sex ratio laid by a female was not influenced by whether she mated with a sibling or non-relative. Meta-analysis of all the experiments we have undertaken confirms this pattern. This failure to respond to the identity of a mating partner suggests females are unable to discriminate kin and is a relatively rare example of maladaptive sex allocation.
Type: Journal Article
Rights: Publisher policy allows this work to be made available in this repository. Published in Evol Ecol Res 6: 473-480 (2004) by Evolutionary Ecology. The original publication is available at:
Affiliation: University of Edinburgh
University of Edinburgh
Biological and Environmental Sciences
University of Edinburgh

Files in This Item:
File Description SizeFormat 
Shuker_etal_EER_04.pdf322.73 kBAdobe PDFView/Open

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.