Partitioning of reproduction in mother-daughter versus sibling associations : a test of optimal skew theory
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Version: author
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Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Partitioning of reproduction in mother-daughter versus sibling associations : a test of optimal skew theory
Journal
American Naturalist
ISSN
0003-0147
Publication state
Published
Issued date
1995
Peer-reviewed
Oui
Volume
145
Number
1
Pages
119-132
Language
english
Abstract
A critical feature of cooperative animal societies is the reproductive skew, a shorthand term for the degree to which a dominant individual monopolizes overall reproduction in the group. Our theoretical analysis of the evolutionarily stable skew in matrifilial (i.e., mother-daughter) societies, in which relatednesses to offspring are asymmetrical, predicts that reproductive skews in such societies should tend to be greater than those of semisocial societies (i.e., societies composed of individuals of the same generation, such as siblings), in which relatednesses to offspring are symmetrical. Quantitative data on reproductive skews in semisocial and matrifilial associations within the same species for 17 eusocial Hymenoptera support this prediction. Likewise, a survey of reproductive partitioning within 20 vertebrate societies demonstrates that complete reproductive monopoly is more likely to occur in matrifilial than in semisocial societies, also as predicted by the optimal skew model.
Keywords
social wasps polistes japanese paper wasp sex-ratios hymenoptera vespidae colonies organization relatedness dominance societies
Web of science
Open Access
Yes
Create date
24/01/2008 19:39
Last modification date
20/08/2019 15:26