Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa
Abstract The marked differences in predation risk posed by white sharks ( Carcarodon carcarias) at island rookeries of Cape fur seals ( Arctocephalus pusillus pusillus ) offer a quasi‐experimental design within a natural system for exploring how prey adjust their behavior in response to temporal var...
Published in: | Marine Mammal Science |
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Online Access: | http://dx.doi.org/10.1111/mms.12208 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12208 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12208 |
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crwiley:10.1111/mms.12208 2024-09-15T18:41:40+00:00 Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa De Vos, Alta Justin O'Riain, M. Meyer, Michael A. Kotze, P. Gideon H. Kock, Alison A. National Research Foundation of South Africa University Research Council, University of Cape Town 2015 http://dx.doi.org/10.1111/mms.12208 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12208 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12208 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 31, issue 3, page 1118-1131 ISSN 0824-0469 1748-7692 journal-article 2015 crwiley https://doi.org/10.1111/mms.12208 2024-08-06T04:19:08Z Abstract The marked differences in predation risk posed by white sharks ( Carcarodon carcarias) at island rookeries of Cape fur seals ( Arctocephalus pusillus pusillus ) offer a quasi‐experimental design within a natural system for exploring how prey adjust their behavior in response to temporal variation in predation risk. Here we compare movement of juvenile and adult Cape fur seals at a high risk (Seal Island) and low risk (Egg Island) rookery. We further compare juveniles and adults at Seal Island in low and high risk seasons and at low and high risk times of day within those seasons. Adult fur seals at Seal Island avoided traversing the zone of high white shark predation risk during the high risk period (0700–0959) in the season of high risk (winter), but not during the low risk season (summer). By contrast, adult fur seals at Egg Island showed no temporal discretion in either season. Unlike juvenile fur seals at Egg Island, juveniles at Seal Island adjusted their temporal movement patterns to more closely mimic adult seal movement patterns. This suggests that exposure to predators is the primary driver of temporal adjustments to movement by prey species commuting from a central place. Article in Journal/Newspaper Egg Island Seal Island Wiley Online Library Marine Mammal Science 31 3 1118 1131 |
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Wiley Online Library |
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language |
English |
description |
Abstract The marked differences in predation risk posed by white sharks ( Carcarodon carcarias) at island rookeries of Cape fur seals ( Arctocephalus pusillus pusillus ) offer a quasi‐experimental design within a natural system for exploring how prey adjust their behavior in response to temporal variation in predation risk. Here we compare movement of juvenile and adult Cape fur seals at a high risk (Seal Island) and low risk (Egg Island) rookery. We further compare juveniles and adults at Seal Island in low and high risk seasons and at low and high risk times of day within those seasons. Adult fur seals at Seal Island avoided traversing the zone of high white shark predation risk during the high risk period (0700–0959) in the season of high risk (winter), but not during the low risk season (summer). By contrast, adult fur seals at Egg Island showed no temporal discretion in either season. Unlike juvenile fur seals at Egg Island, juveniles at Seal Island adjusted their temporal movement patterns to more closely mimic adult seal movement patterns. This suggests that exposure to predators is the primary driver of temporal adjustments to movement by prey species commuting from a central place. |
author2 |
National Research Foundation of South Africa University Research Council, University of Cape Town |
format |
Article in Journal/Newspaper |
author |
De Vos, Alta Justin O'Riain, M. Meyer, Michael A. Kotze, P. Gideon H. Kock, Alison A. |
spellingShingle |
De Vos, Alta Justin O'Riain, M. Meyer, Michael A. Kotze, P. Gideon H. Kock, Alison A. Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa |
author_facet |
De Vos, Alta Justin O'Riain, M. Meyer, Michael A. Kotze, P. Gideon H. Kock, Alison A. |
author_sort |
De Vos, Alta |
title |
Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa |
title_short |
Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa |
title_full |
Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa |
title_fullStr |
Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa |
title_full_unstemmed |
Behavior of Cape fur seals ( Arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( Carcharodon carcharias) around a seal rookery in False Bay, South Africa |
title_sort |
behavior of cape fur seals ( arctocephalus pusillus pusillus) in relation to temporal variation in predation risk by white sharks ( carcharodon carcharias) around a seal rookery in false bay, south africa |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/mms.12208 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12208 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12208 |
genre |
Egg Island Seal Island |
genre_facet |
Egg Island Seal Island |
op_source |
Marine Mammal Science volume 31, issue 3, page 1118-1131 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mms.12208 |
container_title |
Marine Mammal Science |
container_volume |
31 |
container_issue |
3 |
container_start_page |
1118 |
op_container_end_page |
1131 |
_version_ |
1810486057698852864 |