Kin-informative recognition cues in ants

Nehring, Volker, Evison, Sophie E F, Santorelli, Lorenzo A, d'Ettorre, Patrizia and Hughes, William O H (2011) Kin-informative recognition cues in ants. Proceedings. Biological sciences / The Royal Society, 278 (1714). pp. 1942-1948. ISSN 1471-2954

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Abstract

Although social groups are characterized by cooperation, they are also often the scene of conflict. In non-clonal systems, the reproductive interests of group members will differ and individuals may benefit by exploiting the cooperative efforts of other group members. However, such selfish behaviour is thought to be rare in one of the classic examples of cooperation--social insect colonies--because the colony-level costs of individual selfishness select against cues that would allow workers to recognize their closest relatives. In accord with this, previous studies of wasps and ants have found little or no kin information in recognition cues. Here, we test the hypothesis that social insects do not have kin-informative recognition cues by investigating the recognition cues and relatedness of workers from four colonies of the ant Acromyrmex octospinosus. Contrary to the theoretical prediction, we show that the cuticular hydrocarbons of ant workers in all four colonies are informative enough to allow full-sisters to be distinguished from half-sisters with a high accuracy. These results contradict the hypothesis of non-heritable recognition cues and suggest that there is more potential for within-colony conflicts in genetically diverse societies than previously thought.

Item Type: Article
Schools and Departments: School of Life Sciences > Evolution, Behaviour and Environment
Subjects: Q Science
Depositing User: Deeptima Massey
Date Deposited: 26 Oct 2012 09:43
Last Modified: 31 Oct 2012 09:36
URI: http://sro.sussex.ac.uk/id/eprint/40934
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