Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya
At-sea behaviour of central-place foraging fur seals and penguins in the Southern Ocean is understudied during the latter stages of parental care and the subsequent pre-moulting period. This biologically important period is costly to investigate due to the risk (or certainty) of losing tracking inst...
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Cambridge University Press
2014
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Online Access: | http://hdl.handle.net/2263/43476 https://doi.org/10.1017/S0954102014000170 |
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ftunivpretoria:oai:repository.up.ac.za:2263/43476 2023-05-15T14:02:52+02:00 Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya Lowther, Andrew D. Lydersen, Christian Biuw, Martin De Bruyn, P.J. Nico Hofmeyr, G.J. Greg (Gordon John Gregory) Kovacs, Kit M. 2014 http://hdl.handle.net/2263/43476 https://doi.org/10.1017/S0954102014000170 en eng Cambridge University Press http://hdl.handle.net/2263/43476 Lowther, AD, Lydersen, C, Biuw, M, De Bruyn, PJN, Hofmeyr, GJG, Kovacs, KM 2014, 'Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya', Antarctic Science, vol. 26, no. 5, pp. 533–544. 0954-1020 (print) 1365-2079 (online) doi:10.1017/S0954102014000170 © Antarctic Science Ltd 2014 Foraging ecology Hidden Markov models Oceanography Penguins Telemetry Macaroni penguins (Eudyptes chrysolophus) Chinstrap penguins (Pygoscelis antarctica) Fur seals Antarctic fur seal (Arctocephalus gazella) Article 2014 ftunivpretoria https://doi.org/10.1017/S0954102014000170 2022-05-31T13:26:20Z At-sea behaviour of central-place foraging fur seals and penguins in the Southern Ocean is understudied during the latter stages of parental care and the subsequent pre-moulting period. This biologically important period is costly to investigate due to the risk (or certainty) of losing tracking instruments when the animals moult. Early in this period, parents must meet the increasing demands of larger, more mobile offspring that are still nutritionally dependent and then the parents must recover lost body condition prior to the onset of their annual moult. This study reports late-season, at-sea movement patterns of macaroni penguins, chinstrap penguins and adult female Antarctic fur seals from the subantarctic island Bouvetøya, in relation to remotely-sensed oceanographic features. Foraging trips differing significantly in direction and distance travelled compared to those performed earlier in the breeding season, coincide with the time when offspring would be expected to become independent. On these trips, macaroni penguins moved towards the Polar Front while chinstrap penguins and Antarctic fur seals moved southward. Individuals from all three species appeared to target submesoscale ocean features once they were presumed to have been released from the constraints of feeding their young and were able to travel greater distances from the colony. Norwegian Antarctic Research Expedition (NARE) http://journals.cambridge.org/action/displayJournal?jid=ANS tm2015 Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Antarctic Science Antarctica Arctocephalus gazella Bouvetøya Eudyptes chrysolophus Pygoscelis antarctica Southern Ocean University of Pretoria: UPSpace Antarctic Southern Ocean Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Antarctic Science 26 5 533 544 |
institution |
Open Polar |
collection |
University of Pretoria: UPSpace |
op_collection_id |
ftunivpretoria |
language |
English |
topic |
Foraging ecology Hidden Markov models Oceanography Penguins Telemetry Macaroni penguins (Eudyptes chrysolophus) Chinstrap penguins (Pygoscelis antarctica) Fur seals Antarctic fur seal (Arctocephalus gazella) |
spellingShingle |
Foraging ecology Hidden Markov models Oceanography Penguins Telemetry Macaroni penguins (Eudyptes chrysolophus) Chinstrap penguins (Pygoscelis antarctica) Fur seals Antarctic fur seal (Arctocephalus gazella) Lowther, Andrew D. Lydersen, Christian Biuw, Martin De Bruyn, P.J. Nico Hofmeyr, G.J. Greg (Gordon John Gregory) Kovacs, Kit M. Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya |
topic_facet |
Foraging ecology Hidden Markov models Oceanography Penguins Telemetry Macaroni penguins (Eudyptes chrysolophus) Chinstrap penguins (Pygoscelis antarctica) Fur seals Antarctic fur seal (Arctocephalus gazella) |
description |
At-sea behaviour of central-place foraging fur seals and penguins in the Southern Ocean is understudied during the latter stages of parental care and the subsequent pre-moulting period. This biologically important period is costly to investigate due to the risk (or certainty) of losing tracking instruments when the animals moult. Early in this period, parents must meet the increasing demands of larger, more mobile offspring that are still nutritionally dependent and then the parents must recover lost body condition prior to the onset of their annual moult. This study reports late-season, at-sea movement patterns of macaroni penguins, chinstrap penguins and adult female Antarctic fur seals from the subantarctic island Bouvetøya, in relation to remotely-sensed oceanographic features. Foraging trips differing significantly in direction and distance travelled compared to those performed earlier in the breeding season, coincide with the time when offspring would be expected to become independent. On these trips, macaroni penguins moved towards the Polar Front while chinstrap penguins and Antarctic fur seals moved southward. Individuals from all three species appeared to target submesoscale ocean features once they were presumed to have been released from the constraints of feeding their young and were able to travel greater distances from the colony. Norwegian Antarctic Research Expedition (NARE) http://journals.cambridge.org/action/displayJournal?jid=ANS tm2015 |
format |
Article in Journal/Newspaper |
author |
Lowther, Andrew D. Lydersen, Christian Biuw, Martin De Bruyn, P.J. Nico Hofmeyr, G.J. Greg (Gordon John Gregory) Kovacs, Kit M. |
author_facet |
Lowther, Andrew D. Lydersen, Christian Biuw, Martin De Bruyn, P.J. Nico Hofmeyr, G.J. Greg (Gordon John Gregory) Kovacs, Kit M. |
author_sort |
Lowther, Andrew D. |
title |
Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya |
title_short |
Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya |
title_full |
Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya |
title_fullStr |
Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya |
title_full_unstemmed |
Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya |
title_sort |
post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the southern ocean around bouvetøya |
publisher |
Cambridge University Press |
publishDate |
2014 |
url |
http://hdl.handle.net/2263/43476 https://doi.org/10.1017/S0954102014000170 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) |
geographic |
Antarctic Southern Ocean Bouvetøya |
geographic_facet |
Antarctic Southern Ocean Bouvetøya |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Antarctic Science Antarctica Arctocephalus gazella Bouvetøya Eudyptes chrysolophus Pygoscelis antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Antarctic Science Antarctica Arctocephalus gazella Bouvetøya Eudyptes chrysolophus Pygoscelis antarctica Southern Ocean |
op_relation |
http://hdl.handle.net/2263/43476 Lowther, AD, Lydersen, C, Biuw, M, De Bruyn, PJN, Hofmeyr, GJG, Kovacs, KM 2014, 'Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya', Antarctic Science, vol. 26, no. 5, pp. 533–544. 0954-1020 (print) 1365-2079 (online) doi:10.1017/S0954102014000170 |
op_rights |
© Antarctic Science Ltd 2014 |
op_doi |
https://doi.org/10.1017/S0954102014000170 |
container_title |
Antarctic Science |
container_volume |
26 |
container_issue |
5 |
container_start_page |
533 |
op_container_end_page |
544 |
_version_ |
1766273270536994816 |