Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee

Animals respond to competition among kin for critical breeding resources in two ways: avoidance of direct fitness costs via dispersal of siblings to breed separately, and formation of kin-based societies in which subordinates offset direct fitness costs of breeding competition via altruism and incre...

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Autores principales: Jess L. Vickruck, Miriam H. Richards
Formato: article
Lenguaje:EN
Publicado: Frontiers Media S.A. 2021
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bee
Acceso en línea:https://doaj.org/article/a05e8499d3dd4265b2fa77750e1dc3b7
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spelling oai:doaj.org-article:a05e8499d3dd4265b2fa77750e1dc3b72021-11-30T18:46:23ZCompetition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee2296-701X10.3389/fevo.2021.738809https://doaj.org/article/a05e8499d3dd4265b2fa77750e1dc3b72021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fevo.2021.738809/fullhttps://doaj.org/toc/2296-701XAnimals respond to competition among kin for critical breeding resources in two ways: avoidance of direct fitness costs via dispersal of siblings to breed separately, and formation of kin-based societies in which subordinates offset direct fitness costs of breeding competition via altruism and increased indirect fitness. In the facultatively social eastern carpenter bee, nests are a critical breeding resource in perpetually short supply, leading to strong competition among females. Observations of individually marked and genotyped females in conditions of high and low resource competition demonstrate that competition leads to resource sharing and group nesting. However, in contrast to almost all known animal societies, females avoid nesting with relatives, and disperse from their natal nests to join social groups of non-relatives. This is the first example of a structured insect society with cooperation nestmates, the majority of which are unrelated; thus cooperation is more likely based on selection for direct, rather than indirect fitness. By forming social groups of non-kin, females avoid the indirect fitness costs of kin competition among sisters, yet increase their chances of successful reproduction, and thus direct fitness, when forming colonies of non-relatives.Jess L. VickruckMiriam H. RichardsFrontiers Media S.A.articlesocial evolutionXylocopa virginicanesting resourcesbehavioral plasticitybeeEvolutionQH359-425EcologyQH540-549.5ENFrontiers in Ecology and Evolution, Vol 9 (2021)
institution DOAJ
collection DOAJ
language EN
topic social evolution
Xylocopa virginica
nesting resources
behavioral plasticity
bee
Evolution
QH359-425
Ecology
QH540-549.5
spellingShingle social evolution
Xylocopa virginica
nesting resources
behavioral plasticity
bee
Evolution
QH359-425
Ecology
QH540-549.5
Jess L. Vickruck
Miriam H. Richards
Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee
description Animals respond to competition among kin for critical breeding resources in two ways: avoidance of direct fitness costs via dispersal of siblings to breed separately, and formation of kin-based societies in which subordinates offset direct fitness costs of breeding competition via altruism and increased indirect fitness. In the facultatively social eastern carpenter bee, nests are a critical breeding resource in perpetually short supply, leading to strong competition among females. Observations of individually marked and genotyped females in conditions of high and low resource competition demonstrate that competition leads to resource sharing and group nesting. However, in contrast to almost all known animal societies, females avoid nesting with relatives, and disperse from their natal nests to join social groups of non-relatives. This is the first example of a structured insect society with cooperation nestmates, the majority of which are unrelated; thus cooperation is more likely based on selection for direct, rather than indirect fitness. By forming social groups of non-kin, females avoid the indirect fitness costs of kin competition among sisters, yet increase their chances of successful reproduction, and thus direct fitness, when forming colonies of non-relatives.
format article
author Jess L. Vickruck
Miriam H. Richards
author_facet Jess L. Vickruck
Miriam H. Richards
author_sort Jess L. Vickruck
title Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee
title_short Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee
title_full Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee
title_fullStr Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee
title_full_unstemmed Competition Drives Group Formation and Reduces Within Nest Relatedness in a Facultatively Social Carpenter Bee
title_sort competition drives group formation and reduces within nest relatedness in a facultatively social carpenter bee
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/a05e8499d3dd4265b2fa77750e1dc3b7
work_keys_str_mv AT jesslvickruck competitiondrivesgroupformationandreduceswithinnestrelatednessinafacultativelysocialcarpenterbee
AT miriamhrichards competitiondrivesgroupformationandreduceswithinnestrelatednessinafacultativelysocialcarpenterbee
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