Social and genetic connectivity despite ecological variation in a killer whale network
Philopatric kin-based societies encourage a narrow breadth of conservative behaviours owing to individuals primarily learning from close kin, promoting behavioural homogeneity. However, weaker social ties beyond kin, and across a behaviourally diverse social landscape, could be sufficient to induce...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/3146647 2024-09-15T18:16:44+00:00 Social and genetic connectivity despite ecological variation in a killer whale network Jourdain, Eve Marie Karoliussen, Richard Fordyce Martin, Sarah L. Langangen, Øystein Ole Gahr Robeck, Todd Borgå, Katrine Ruus, Anders Foote, Andrew David 2024 application/pdf https://hdl.handle.net/11250/3146647 https://doi.org/10.1098/rspb.2024.0524 eng eng The Royal Society Proceedings of the Royal Society of London. Biological Sciences. 2024, 291 (2021), . urn:issn:0962-8452 https://hdl.handle.net/11250/3146647 https://doi.org/10.1098/rspb.2024.0524 cristin:2267896 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 11 291 Proceedings of the Royal Society of London. Biological Sciences 2021 Peer reviewed Journal article 2024 ftntnutrondheimi https://doi.org/10.1098/rspb.2024.0524 2024-08-22T23:31:55Z Philopatric kin-based societies encourage a narrow breadth of conservative behaviours owing to individuals primarily learning from close kin, promoting behavioural homogeneity. However, weaker social ties beyond kin, and across a behaviourally diverse social landscape, could be sufficient to induce variation and a greater ecological niche breadth. We investigated a network of 457 photo-identified killer whales from Norway (548 encounters in 2008–2021) with diet data available (46 mixed-diet individuals feeding on both fish and mammals, and 411 exclusive fish-eaters) to quantify patterns of association within and between diet groups, and to identify underlying correlates. We genotyped a subset of 106 whales to assess patterns of genetic differentiation. Our results suggested kinship as main driver of social bonds within and among cohesive social units, while diet was most likely a consequence reflective of cultural diffusion, rather than a driver. Flexible associations within and between ecologically diverse social units led to a highly connected network, reducing social and genetic differentiation between diet groups. Our study points to a role of social connectivity, in combination with individual behavioural variation, in influencing population ecology in killer whales. publishedVersion Article in Journal/Newspaper Killer Whale Killer whale NTNU Open Archive (Norwegian University of Science and Technology) Proceedings of the Royal Society B: Biological Sciences 291 2021 |
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Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
Philopatric kin-based societies encourage a narrow breadth of conservative behaviours owing to individuals primarily learning from close kin, promoting behavioural homogeneity. However, weaker social ties beyond kin, and across a behaviourally diverse social landscape, could be sufficient to induce variation and a greater ecological niche breadth. We investigated a network of 457 photo-identified killer whales from Norway (548 encounters in 2008–2021) with diet data available (46 mixed-diet individuals feeding on both fish and mammals, and 411 exclusive fish-eaters) to quantify patterns of association within and between diet groups, and to identify underlying correlates. We genotyped a subset of 106 whales to assess patterns of genetic differentiation. Our results suggested kinship as main driver of social bonds within and among cohesive social units, while diet was most likely a consequence reflective of cultural diffusion, rather than a driver. Flexible associations within and between ecologically diverse social units led to a highly connected network, reducing social and genetic differentiation between diet groups. Our study points to a role of social connectivity, in combination with individual behavioural variation, in influencing population ecology in killer whales. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Jourdain, Eve Marie Karoliussen, Richard Fordyce Martin, Sarah L. Langangen, Øystein Ole Gahr Robeck, Todd Borgå, Katrine Ruus, Anders Foote, Andrew David |
spellingShingle |
Jourdain, Eve Marie Karoliussen, Richard Fordyce Martin, Sarah L. Langangen, Øystein Ole Gahr Robeck, Todd Borgå, Katrine Ruus, Anders Foote, Andrew David Social and genetic connectivity despite ecological variation in a killer whale network |
author_facet |
Jourdain, Eve Marie Karoliussen, Richard Fordyce Martin, Sarah L. Langangen, Øystein Ole Gahr Robeck, Todd Borgå, Katrine Ruus, Anders Foote, Andrew David |
author_sort |
Jourdain, Eve Marie |
title |
Social and genetic connectivity despite ecological variation in a killer whale network |
title_short |
Social and genetic connectivity despite ecological variation in a killer whale network |
title_full |
Social and genetic connectivity despite ecological variation in a killer whale network |
title_fullStr |
Social and genetic connectivity despite ecological variation in a killer whale network |
title_full_unstemmed |
Social and genetic connectivity despite ecological variation in a killer whale network |
title_sort |
social and genetic connectivity despite ecological variation in a killer whale network |
publisher |
The Royal Society |
publishDate |
2024 |
url |
https://hdl.handle.net/11250/3146647 https://doi.org/10.1098/rspb.2024.0524 |
genre |
Killer Whale Killer whale |
genre_facet |
Killer Whale Killer whale |
op_source |
11 291 Proceedings of the Royal Society of London. Biological Sciences 2021 |
op_relation |
Proceedings of the Royal Society of London. Biological Sciences. 2024, 291 (2021), . urn:issn:0962-8452 https://hdl.handle.net/11250/3146647 https://doi.org/10.1098/rspb.2024.0524 cristin:2267896 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_doi |
https://doi.org/10.1098/rspb.2024.0524 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
291 |
container_issue |
2021 |
_version_ |
1810454735747022848 |