dc.contributor.author |
Reisinger, Ryan Rudolf
|
|
dc.contributor.author |
Beukes, Charlene
|
|
dc.contributor.author |
Hoelzel, A. Rus
|
|
dc.contributor.author |
De Bruyn, P.J. Nico
|
|
dc.date.accessioned |
2017-07-19T06:54:11Z |
|
dc.date.issued |
2017-05 |
|
dc.description.abstract |
Social structure is a core element of population biology, influenced by intrinsic and environmental factors. Intra-taxon comparisons of social organization are useful in elucidating the role of such ecological determinants of sociality. Killer whales Orcinus orca are widely distributed, social delphinids with diverse morphology, diet, behaviour, and genetics, but few studies have quantitatively examined social structure in this species. We used 7 years of individual identification data on killer whales at Marion Island, Southern Ocean, to calculate the half-weight association index among 39 individuals, creating a weighted association network. There were long-term associations between individuals, though associations were dynamic over time. We defined 8 social modules using a community detection algorithm and these typically contained 3 individuals of various ages and sexes. Pairwise genetic relatedness among 20 individuals was not significantly correlated with association index. Individuals were on average more related within than between social modules, but social modules contained related as well as unrelated individuals. Likely parent pairs of 6 individuals indicated mating between social modules. |
en_ZA |
dc.description.department |
Mammal Research Institute |
en_ZA |
dc.description.department |
Zoology and Entomology |
en_ZA |
dc.description.embargo |
2018-05-30 |
|
dc.description.librarian |
hj2017 |
en_ZA |
dc.description.sponsorship |
The South African National Research Foundation (NRF) Thuthuka programme (grant number 76230), the NRF South African National Antarctic Programme (grant numbers 80271, 93071), the Mohamed bin Zayed Species Conservation Fund (project number 10251290), the International Whaling Commission’s Southern Ocean Research Partnership and an NRF South African Network for Coastal and Oceanic Research post-doctoral fellowship to RRR (grant number 94916). |
en_ZA |
dc.description.uri |
http://beheco.oxfordjournals.org |
en_ZA |
dc.identifier.citation |
Reisinger, R.R., Beukes, C., Hoelzel, A.R. & De Bruyn, P.J.N. 2017, 'Kinship and association in a highly social apex predator population, killer whales at Marion Island', Behavioral Ecology, vol. 28, no. 3, pp. 750-759. |
en_ZA |
dc.identifier.issn |
1465-7279 (online) |
|
dc.identifier.issn |
1045-2249 (print) |
|
dc.identifier.other |
10.1093/beheco/arx034 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/61373 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Oxford University Press |
en_ZA |
dc.rights |
© The Author 2017. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. All rights reserved. This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Behavioral Ecology following peer review. The definitive publisher-authenticated version is : Kinship and association in a highly social apex predator population, killer whales at Marion Island, Behavioral Ecology, vol. 28, no. 3, pp. 750-759, 2017, doi : 10.1093/beheco/arx034, is available online at : http://beheco.oxfordjournals.org. |
en_ZA |
dc.subject |
Delphinids |
en_ZA |
dc.subject |
Group |
en_ZA |
dc.subject |
Network |
en_ZA |
dc.subject |
Predators |
en_ZA |
dc.subject |
Relatedness |
en_ZA |
dc.subject |
Sociality |
en_ZA |
dc.subject |
Social structure |
en_ZA |
dc.subject |
Socio-ecology |
en_ZA |
dc.title |
Kinship and association in a highly social apex predator population, killer whales at Marion Island |
en_ZA |
dc.type |
Postprint Article |
en_ZA |