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The Evolution of Indiscriminate Altruism in a Cooperatively Breeding Mammal.

Published version
Peer-reviewed

Type

Article

Change log

Authors

Duncan, Chris 
Gaynor, David 
Clutton-Brock, Timothy  ORCID logo  https://orcid.org/0000-0001-8110-8969

Abstract

Kin selection theory suggests that altruistic behaviors can increase the fitness of altruists when recipients are genetic relatives. Although selection can favor the ability of organisms to preferentially cooperate with close kin, indiscriminately helping all group mates may yield comparable fitness returns if relatedness within groups is very high. Here, we show that meerkats (Suricata suricatta) are largely indiscriminate altruists who do not alter the amount of help provided to pups or group mates in response to their relatedness to them. We present a model showing that indiscriminate altruism may yield greater fitness payoffs than kin discrimination where most group members are close relatives and errors occur in the estimation of relatedness. The presence of errors in the estimation of relatedness provides a feasible explanation for associations between kin discriminative helping and group relatedness in eusocial and cooperatively breeding animals.

Description

Keywords

altruism, cooperation, cooperative breeding, kin selection, meerkats, Altruism, Animals, Biological Evolution, Carnivora, Cooperative Behavior, Female, Male, Models, Genetic

Journal Title

Am Nat

Conference Name

Journal ISSN

0003-0147
1537-5323

Volume Title

193

Publisher

University of Chicago Press

Rights

All rights reserved
Sponsorship
European Research Council (742808)
European Research Council funding (grant 294494)