Details

Autor(en) / Beteiligte

• Duncan, Chris
• Gaynor, David
• Clutton-Brock, Tim
• Dyble, Mark

Titel

The Evolution of Indiscriminate Altruism in a Cooperatively Breeding Mammal

Ist Teil von

• The American naturalist, 2019-06, Vol.193 (6), p.841-851

Ort / Verlag

United States: The University of Chicago Press

Erscheinungsjahr

2019

Quelle

MEDLINE

Beschreibungen/Notizen

• 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.