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          Institute: MPI für Evolutionsbiologie     Collection: Evolutionary genetics     Display Documents

ID: 391084.0, MPI für Evolutionsbiologie / Evolutionary genetics
Kin in space: social viscosity in a spatially and genetically substructured network
Authors:Wolf, Jochen B. W.; Trillmich, Fritz
Date of Publication (YYYY-MM-DD):2008-09-22
Title of Journal:Proceedings of the Royal Society B - Biological Sciences
Journal Abbrev.:Proc. R. Soc. B
Issue / Number:1647
Start Page:2063
End Page:2069
Review Status:not specified
Audience:Not Specified
Abstract / Description:Population substructuring is a fundamental aspect of animal societies. A growing number of theoretical studies recognize that who-meets-whom is not random, but rather determined by spatial relationships or illustrated by social networks. Structural properties of large highly dynamic social systems are notoriously difficult to unravel. Network approaches provide powerful ways to analyse the intricate relationships between social behaviour, dispersal strategies and genetic structure. Applying network analytical tools to a colony of the highly gregarious Galapagos sea lion (Zalophus wollebaeki), we find several genetic clusters that correspond to spatially determined 'network communities'. Overall relatedness was low, and genetic structure in the network can be interpreted as an emergent property of philopatry and seems not to be primarily driven by targeted interactions among highly related individuals in family groups. Nevertheless, social relationships between directly adjacent individuals in the network were stronger among genetically more similar individuals. Taken together, these results suggest that even small differences in the degree of relatedness can influence behavioural decisions. This raises the fascinating prospect that kin selection may also apply to low levels of relatedness within densely packed animal groups where less obvious co-operative interactions such as increased tolerance and stress reduction are important.
Free Keywords:altruism; co-operation; cross-fostering; Zalophus wollebaeki; kin selection; social network
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:Brigitte Lechner
Affiliations:MPI für Evolutionsbiologie/Abt. Evolutionsgenetik
External Affiliations:Univ Cologne, Inst Genet Evolut Genet, D-50674 Cologne, Germany; Univ Bielefeld, Dept Anim Behav, D-33501 Bielefeld, Germany
Identifiers:ISSN:0962-8452 [ID-No:1]
DOI:10.1098/rspb.2008.0356 [ID-No:2]
LOCALID:2645 / S 38916 [Listen-Nummer / S-Nummer]
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