Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella
International audience This study examins the intra- and inter-individual changes in the foraging route-choice behaviour of 45 female Antarctic fur seals Arctocephalus gazella breeding at the Cap Noir colony in the Kerguelen Archipelago, southern Indian Ocean. Satellite transmitters were used to tra...
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ftccsdartic:oai:HAL:hal-00192327v1 2023-05-15T13:39:59+02:00 Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella Bonadonna, Francesco Lea, Marie-Anne Dehorter, Olivier Guinet, Christophe Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Antartic Wildlife Research Unit School of Zoology, University of Tasmania 2001 https://hal.archives-ouvertes.fr/hal-00192327 en eng HAL CCSD Inter Research hal-00192327 https://hal.archives-ouvertes.fr/hal-00192327 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.archives-ouvertes.fr/hal-00192327 Marine Ecology Progress Series, Inter Research, 2001, 223, pp.287-297 Antarctic fur seal · Satellite transmitter · Foraging trip · Kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2001 ftccsdartic 2021-09-04T23:29:02Z International audience This study examins the intra- and inter-individual changes in the foraging route-choice behaviour of 45 female Antarctic fur seals Arctocephalus gazella breeding at the Cap Noir colony in the Kerguelen Archipelago, southern Indian Ocean. Satellite transmitters were used to track seals during one or more consecutive foraging trips in 3 consecutive austral summers (1998 to 2000). In all years of study the seals showed a ‘colony-preferred direction', concentrating their trips at sea in a 140° arc east of Kerguelen, indicating a preferred area for foraging. Within this area, lactating females travelled in 1 of 2 main directions: north east toward the edge of the Kerguelen plateau; and less commonly, east/south east. Each direction led seals to sub-areas characterised by different bathymetric features where animals appeared to use different tactics to search for food patches. Moreover, a fidelity index incorporating the mean direction of successive trips and the colony preferred direction indicated the existence of an individual directional fidelity. The organisation of foraging trips suggests 2 levels of learning by seals: a colony memory of the main foraging zone and an individual memory of profitable patches that are exploited by the same individual during successive trips. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic The Antarctic Austral Kerguelen Indian Cap Noir ENVELOPE(70.452,70.452,-49.069,-49.069) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Antarctic fur seal · Satellite transmitter · Foraging trip · Kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Antarctic fur seal · Satellite transmitter · Foraging trip · Kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology Bonadonna, Francesco Lea, Marie-Anne Dehorter, Olivier Guinet, Christophe Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella |
topic_facet |
Antarctic fur seal · Satellite transmitter · Foraging trip · Kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience This study examins the intra- and inter-individual changes in the foraging route-choice behaviour of 45 female Antarctic fur seals Arctocephalus gazella breeding at the Cap Noir colony in the Kerguelen Archipelago, southern Indian Ocean. Satellite transmitters were used to track seals during one or more consecutive foraging trips in 3 consecutive austral summers (1998 to 2000). In all years of study the seals showed a ‘colony-preferred direction', concentrating their trips at sea in a 140° arc east of Kerguelen, indicating a preferred area for foraging. Within this area, lactating females travelled in 1 of 2 main directions: north east toward the edge of the Kerguelen plateau; and less commonly, east/south east. Each direction led seals to sub-areas characterised by different bathymetric features where animals appeared to use different tactics to search for food patches. Moreover, a fidelity index incorporating the mean direction of successive trips and the colony preferred direction indicated the existence of an individual directional fidelity. The organisation of foraging trips suggests 2 levels of learning by seals: a colony memory of the main foraging zone and an individual memory of profitable patches that are exploited by the same individual during successive trips. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Antartic Wildlife Research Unit School of Zoology, University of Tasmania |
format |
Article in Journal/Newspaper |
author |
Bonadonna, Francesco Lea, Marie-Anne Dehorter, Olivier Guinet, Christophe |
author_facet |
Bonadonna, Francesco Lea, Marie-Anne Dehorter, Olivier Guinet, Christophe |
author_sort |
Bonadonna, Francesco |
title |
Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella |
title_short |
Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella |
title_full |
Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella |
title_fullStr |
Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella |
title_full_unstemmed |
Foraging ground fidelity and route-choice tactics of a marine predator: the Antarctic fur seal Arctocephalus gazella |
title_sort |
foraging ground fidelity and route-choice tactics of a marine predator: the antarctic fur seal arctocephalus gazella |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.archives-ouvertes.fr/hal-00192327 |
long_lat |
ENVELOPE(70.452,70.452,-49.069,-49.069) |
geographic |
Antarctic The Antarctic Austral Kerguelen Indian Cap Noir |
geographic_facet |
Antarctic The Antarctic Austral Kerguelen Indian Cap Noir |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.archives-ouvertes.fr/hal-00192327 Marine Ecology Progress Series, Inter Research, 2001, 223, pp.287-297 |
op_relation |
hal-00192327 https://hal.archives-ouvertes.fr/hal-00192327 |
_version_ |
1766126700261801984 |