Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea
Abstract Evidence indicates that Antarctic minke whales (AMWs) in the Ross Sea affect the foraging behaviour, especially diet, of sympatric Adélie penguins (ADPEs) by, we hypothesize, influencing the availability of prey they have in common, mainly crystal krill. To further investigate this interact...
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crcambridgeupr:10.1017/s0954102020000310 2024-03-03T08:37:48+00:00 Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea Ainley, David G. Joyce, Trevor W. Saenz, Ben Pitman, Robert L. Durban, John W. Ballard, Grant Daly, Kendra Kim, Stacy 2020 http://dx.doi.org/10.1017/s0954102020000310 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000310 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 32, issue 6, page 454-465 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2020 crcambridgeupr https://doi.org/10.1017/s0954102020000310 2024-02-08T08:30:45Z Abstract Evidence indicates that Antarctic minke whales (AMWs) in the Ross Sea affect the foraging behaviour, especially diet, of sympatric Adélie penguins (ADPEs) by, we hypothesize, influencing the availability of prey they have in common, mainly crystal krill. To further investigate this interaction, we undertook a study in McMurdo Sound during 2012–2013 and 2014–2015 using telemetry and biologging of whales and penguins, shore-based observations and quantification of the preyscape. The 3D distribution and density of prey were assessed using a remotely operated vehicle deployed along and to the interior of the fast-ice edge where AMWs and ADPEs focused their foraging. Acoustic surveys of prey and foraging behaviour of predators indicate that prey remained abundant under the fast ice, becoming successively available to air-breathing predators only as the fast ice retreated. Over both seasons, the ADPE diet included less krill and more Antarctic silverfish once AMWs became abundant, but the penguins' foraging behaviour (i.e. time spent foraging, dive depth, distance from colony) did not change. In addition, over time, krill abundance decreased in the upper water column near the ice edge, consistent with the hypothesis (and previously gathered information) that AMW and ADPE foraging contributed to an alteration of prey availability. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctic silverfish McMurdo Sound Ross Sea Cambridge University Press Antarctic Ross Sea McMurdo Sound Antarctic Science 32 6 454 465 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Ainley, David G. Joyce, Trevor W. Saenz, Ben Pitman, Robert L. Durban, John W. Ballard, Grant Daly, Kendra Kim, Stacy Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Evidence indicates that Antarctic minke whales (AMWs) in the Ross Sea affect the foraging behaviour, especially diet, of sympatric Adélie penguins (ADPEs) by, we hypothesize, influencing the availability of prey they have in common, mainly crystal krill. To further investigate this interaction, we undertook a study in McMurdo Sound during 2012–2013 and 2014–2015 using telemetry and biologging of whales and penguins, shore-based observations and quantification of the preyscape. The 3D distribution and density of prey were assessed using a remotely operated vehicle deployed along and to the interior of the fast-ice edge where AMWs and ADPEs focused their foraging. Acoustic surveys of prey and foraging behaviour of predators indicate that prey remained abundant under the fast ice, becoming successively available to air-breathing predators only as the fast ice retreated. Over both seasons, the ADPE diet included less krill and more Antarctic silverfish once AMWs became abundant, but the penguins' foraging behaviour (i.e. time spent foraging, dive depth, distance from colony) did not change. In addition, over time, krill abundance decreased in the upper water column near the ice edge, consistent with the hypothesis (and previously gathered information) that AMW and ADPE foraging contributed to an alteration of prey availability. |
format |
Article in Journal/Newspaper |
author |
Ainley, David G. Joyce, Trevor W. Saenz, Ben Pitman, Robert L. Durban, John W. Ballard, Grant Daly, Kendra Kim, Stacy |
author_facet |
Ainley, David G. Joyce, Trevor W. Saenz, Ben Pitman, Robert L. Durban, John W. Ballard, Grant Daly, Kendra Kim, Stacy |
author_sort |
Ainley, David G. |
title |
Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea |
title_short |
Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea |
title_full |
Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea |
title_fullStr |
Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea |
title_full_unstemmed |
Foraging patterns of Antarctic minke whales in McMurdo Sound, Ross Sea |
title_sort |
foraging patterns of antarctic minke whales in mcmurdo sound, ross sea |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s0954102020000310 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000310 |
geographic |
Antarctic Ross Sea McMurdo Sound |
geographic_facet |
Antarctic Ross Sea McMurdo Sound |
genre |
Antarc* Antarctic Antarctic Science Antarctic silverfish McMurdo Sound Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctic silverfish McMurdo Sound Ross Sea |
op_source |
Antarctic Science volume 32, issue 6, page 454-465 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102020000310 |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
6 |
container_start_page |
454 |
op_container_end_page |
465 |
_version_ |
1792501736196276224 |