Cooperation among unrelated individuals: the ant foundress case

Ant foundress associations are an example of cooperation among non-kin. Across a dozen genera, queens able to found a colony alone often join unrelated queens, thereby enhancing worker production and colony survivorship. The benefits of joining other queens vary with group size and ecological condit...

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Published in:Trends in Ecology & Evolution 1999-12, Vol.14 (12), p.477-482
Main Authors: Bernasconi, Giorgina, Strassmann, Joan E.
Format: Article
Language:English
Subjects:
Animal ethology
Ants
Biological and medical sciences
Colony founding
Competitive ability
Conflict
Cooperation
Formicidae
Fundamental and applied biological sciences. Psychology
Nonrelatives
Protozoa. Invertebrata
Psychology. Psychoanalysis. Psychiatry
Relatedness
Social insects
Solenopsis
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description Ant foundress associations are an example of cooperation among non-kin. Across a dozen genera, queens able to found a colony alone often join unrelated queens, thereby enhancing worker production and colony survivorship. The benefits of joining other queens vary with group size and ecological conditions. However, after the first workers mature, the queens fight until only one survives. The presence of cofoundresses, and their relative fighting ability, also affects the extent of cooperative investment before worker emergence. This reveals previously overlooked early conflicts among queens, which reduce the mutualistic benefits of cooperation.
doi_str_mv 10.1016/S0169-5347(99)01722-X
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subjects Animal ethology
Ants
Biological and medical sciences
Colony founding
Competitive ability
Conflict
Cooperation
Formicidae
Fundamental and applied biological sciences. Psychology
Nonrelatives
Protozoa. Invertebrata
Psychology. Psychoanalysis. Psychiatry
Relatedness
Social insects
Solenopsis
title Cooperation among unrelated individuals: the ant foundress case
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