Is sociality driven by the costs of dispersal or the benefits of philopatry? A role for kin-discrimination mechanisms.

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Publications
Institution
Title
Is sociality driven by the costs of dispersal or the benefits of philopatry? A role for kin-discrimination mechanisms.
Journal
American Naturalist
Author(s)
Perrin N., Lehmann L.
ISSN
1537-5323[electronic], 0003-0147[linking]
Publication state
Published
Issued date
2001
Volume
158
Number
5
Pages
471-483
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
The role of ecological constraints in promoting sociality is currently much debated. Using a direct-fitness approach, we show this role to depend on the kin-discrimination mechanisms underlying social interactions. Altruism cannot evolve under spatially based discrimination, unless ecological constraints prevent complete dispersal. Increasing constraints enhances both the proportion of philopatric (and thereby altruistic) individuals and the level of altruistic investments conceded in pairwise interactions. Familiarity-based discrimination, by contrast, allows philopatry and altruism to evolve at significant levels even in the absence of ecological constraints. Increasing constraints further enhances the proportion of philopatric (and thereby altruistic) individuals but not the level of altruism conceded. Ecological constraints are thus more likely to affect social evolution in species in which restricted cognitive abilities, large group size, and/or limited period of associative learning force investments to be made on the basis of spatial cues.
Keywords
altruism, associative learning, game theory, kin competition, relatedness, spatially based discrimination
Pubmed
Web of science
Open Access
Yes
Create date
19/11/2007 9:27
Last modification date
20/08/2019 12:26
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