No evidence that within-group male relatedness reduces harm to females in Drosophila.

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Serval ID
serval:BIB_6FBFD9DB3773
Type
Article: article from journal or magazin.
Collection
Publications
Title
No evidence that within-group male relatedness reduces harm to females in Drosophila.
Journal
Ecology and Evolution
Author(s)
Hollis B., Kawecki T.J., Keller L.
ISSN
2045-7758 (Electronic)
ISSN-L
2045-7758
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
5
Number
4
Pages
979-983
Language
english
Abstract
Conflict between males and females over whether, when, and how often to mate often leads to the evolution of sexually antagonistic interactions that reduce female reproductive success. Because the offspring of relatives contribute to inclusive fitness, high relatedness between rival males might be expected to reduce competition and result in the evolution of reduced harm to females. A recent study investigated this possibility in Drosophila melanogaster and concluded that groups of brothers cause less harm to females than groups of unrelated males, attributing the effect to kin selection. That study did not control for the rearing environment of males, rendering the results impossible to interpret in the context of kin selection. Here, we conducted a similar experiment while manipulating whether males developed with kin prior to being placed with females. We found no difference between related and unrelated males in the harm caused to females when males were reared separately. In contrast, when related males developed and emerged together before the experiment, female reproductive output was higher. Our results show that relatedness among males is insufficient to reduce harm to females, while a shared rearing environment - resulting in males similar to or familiar with one another - is necessary to generate this pattern.
Keywords
Drosophila, inclusive fitness, kin selection, relatedness, sexual antagonism, sexual conflict, social evolution
Pubmed
Web of science
Open Access
Yes
Create date
14/01/2015 17:39
Last modification date
20/08/2019 15:28
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