Data from: Saami reindeer herders cooperate with social group members and genetic kin
Cooperative behaviors evolve by ultimately increasing the inclusive fitness of performers as well as recipients of those behaviors. Such increases can occur via direct or indirect fitness benefits, theoretically explained by reciprocal altruism and kin selection, respectively. However, humans are kn...
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ftdryad:oai:v1.datadryad.org:10255/dryad.91324 2023-05-15T16:13:42+02:00 Data from: Saami reindeer herders cooperate with social group members and genetic kin Thomas, Matthew G. Næss, Marius Warg Bårdsen, Bård-Jørgen Mace, Ruth Finnmark Norway 2015-07-08T20:04:06Z http://hdl.handle.net/10255/dryad.91324 https://doi.org/10.5061/dryad.s3v63 unknown doi:10.5061/dryad.s3v63/1 doi:10.5061/dryad.s3v63/2 doi:10.5061/dryad.s3v63/3 doi:10.5061/dryad.s3v63/4 doi:10.1093/beheco/arv106 doi:10.5061/dryad.s3v63 Thomas MG, Næss MW, Bårdsen B, Mace R (2015) Saami reindeer herders cooperate with social group members and genetic kin. Behavioral Ecology 26(6): 1495-1501. http://hdl.handle.net/10255/dryad.91324 Cooperation Economic games Humans Kin selection Reciprocal altruism Social groups Article 2015 ftdryad https://doi.org/10.5061/dryad.s3v63 https://doi.org/10.5061/dryad.s3v63/1 https://doi.org/10.5061/dryad.s3v63/2 https://doi.org/10.5061/dryad.s3v63/3 https://doi.org/10.5061/dryad.s3v63/4 https://doi.org/10.1093/beheco/arv106 2020-01-01T15:21:40Z Cooperative behaviors evolve by ultimately increasing the inclusive fitness of performers as well as recipients of those behaviors. Such increases can occur via direct or indirect fitness benefits, theoretically explained by reciprocal altruism and kin selection, respectively. However, humans are known for cooperating with individuals who are not necessarily genetic relatives, which seemingly precludes kin selection as an explanation. Here, we aim to quantify the relative importance of kinship and social group membership as mediators of cooperative behavior. Using an experimental gift game, we test whether indigenous Saami reindeer herders in Norway give gifts to genetic relatives or to members of their cooperative herding group (the “siida”) or both. Membership of the same siida strongly increased the odds of gift giving. Kinship had a smaller, albeit positive, effect. Gifts were not preferentially given to younger family members, contrary to predictions relating to intergenerational resource transfers as a form of parental investment. These patterns suggest that social grouping can be at least as important as genetic factors in mediating cooperative behavior in this population. This is likely to reflect the importance of herding groups in day-to-day subsistence. Article in Journal/Newspaper Finnmark saami Finnmark Dryad Digital Repository (Duke University) Norway |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Cooperation Economic games Humans Kin selection Reciprocal altruism Social groups |
spellingShingle |
Cooperation Economic games Humans Kin selection Reciprocal altruism Social groups Thomas, Matthew G. Næss, Marius Warg Bårdsen, Bård-Jørgen Mace, Ruth Data from: Saami reindeer herders cooperate with social group members and genetic kin |
topic_facet |
Cooperation Economic games Humans Kin selection Reciprocal altruism Social groups |
description |
Cooperative behaviors evolve by ultimately increasing the inclusive fitness of performers as well as recipients of those behaviors. Such increases can occur via direct or indirect fitness benefits, theoretically explained by reciprocal altruism and kin selection, respectively. However, humans are known for cooperating with individuals who are not necessarily genetic relatives, which seemingly precludes kin selection as an explanation. Here, we aim to quantify the relative importance of kinship and social group membership as mediators of cooperative behavior. Using an experimental gift game, we test whether indigenous Saami reindeer herders in Norway give gifts to genetic relatives or to members of their cooperative herding group (the “siida”) or both. Membership of the same siida strongly increased the odds of gift giving. Kinship had a smaller, albeit positive, effect. Gifts were not preferentially given to younger family members, contrary to predictions relating to intergenerational resource transfers as a form of parental investment. These patterns suggest that social grouping can be at least as important as genetic factors in mediating cooperative behavior in this population. This is likely to reflect the importance of herding groups in day-to-day subsistence. |
format |
Article in Journal/Newspaper |
author |
Thomas, Matthew G. Næss, Marius Warg Bårdsen, Bård-Jørgen Mace, Ruth |
author_facet |
Thomas, Matthew G. Næss, Marius Warg Bårdsen, Bård-Jørgen Mace, Ruth |
author_sort |
Thomas, Matthew G. |
title |
Data from: Saami reindeer herders cooperate with social group members and genetic kin |
title_short |
Data from: Saami reindeer herders cooperate with social group members and genetic kin |
title_full |
Data from: Saami reindeer herders cooperate with social group members and genetic kin |
title_fullStr |
Data from: Saami reindeer herders cooperate with social group members and genetic kin |
title_full_unstemmed |
Data from: Saami reindeer herders cooperate with social group members and genetic kin |
title_sort |
data from: saami reindeer herders cooperate with social group members and genetic kin |
publishDate |
2015 |
url |
http://hdl.handle.net/10255/dryad.91324 https://doi.org/10.5061/dryad.s3v63 |
op_coverage |
Finnmark Norway |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Finnmark saami Finnmark |
genre_facet |
Finnmark saami Finnmark |
op_relation |
doi:10.5061/dryad.s3v63/1 doi:10.5061/dryad.s3v63/2 doi:10.5061/dryad.s3v63/3 doi:10.5061/dryad.s3v63/4 doi:10.1093/beheco/arv106 doi:10.5061/dryad.s3v63 Thomas MG, Næss MW, Bårdsen B, Mace R (2015) Saami reindeer herders cooperate with social group members and genetic kin. Behavioral Ecology 26(6): 1495-1501. http://hdl.handle.net/10255/dryad.91324 |
op_doi |
https://doi.org/10.5061/dryad.s3v63 https://doi.org/10.5061/dryad.s3v63/1 https://doi.org/10.5061/dryad.s3v63/2 https://doi.org/10.5061/dryad.s3v63/3 https://doi.org/10.5061/dryad.s3v63/4 https://doi.org/10.1093/beheco/arv106 |
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1765999520130269184 |