Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record
Humpback whales Megaptera novaeangliae are seasonal migrants that mate and calve at low latitudes and feed at mid- to high latitudes. Connections between most Southern Hemisphere breeding and feeding areas are not well understood, but are critical for assessing stock structure and human impacts. Pho...
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ftunivfurg:oai:repositorio.furg.br:1/3471 2023-11-12T04:03:26+01:00 Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record Robbins, Jooke Rosa, Luciano Dalla Allen, Judith Mattila, David Secchi, Eduardo Resende Friedlaender, Ari Stevick, Peter Nowacek, Douglas Steel, Debbie 2011 application/pdf http://repositorio.furg.br/handle/1/3471 https://doi.org/10.3354/esr00328 eng eng ROBBINS, Jooke et al. Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record. Endangered Species Research, v. 13, p. 117-121, 2011. Disponível em: <http://www.int-res.com/articles/esr_oa/n013p117.pdf>. Acesso em: 19 fev. 2013. http://repositorio.furg.br/handle/1/3471 doi:10.3354/esr00328 open access Migration Humpback whale Photo-ID Spatial distribution Conservation article 2011 ftunivfurg https://doi.org/10.3354/esr00328 2023-10-24T21:03:01Z Humpback whales Megaptera novaeangliae are seasonal migrants that mate and calve at low latitudes and feed at mid- to high latitudes. Connections between most Southern Hemisphere breeding and feeding areas are not well understood, but are critical for assessing stock structure and human impacts. Photo-identification was performed to identify the feeding grounds of an Endangered sub-population that breeds in the central South Pacific Ocean (CSP). Identification photographs were obtained from 159 ind. at American Samoa and compared to 3508 Southern Hemisphere humpback whales in the Antarctic Humpback Whale Catalogue (AHWC), including 1352 from Antarctic feeding grounds. Two individuals from American Samoa were seen on 3 occasions at the Antarctic Peninsula. This is the first known feeding site for American Samoa and one of few reliably identified for the CSP. AHWC #2950 was confirmed to have undertaken a round-trip movement of no less than 18 840 km, spanning 108 longitudinal degrees. This represents the largest mammalian migration known to date and a departure from historical assumptions about CSP migratory patterns. The frequency, causes, and fitness implications of such movements have yet to be determined. However, distance is the only known extrinsic barrier to humpback whale movement within oceans, and so maximum individual range is 1 factor potentially affecting population exchange and colonization of new habitats. The movement documented here may place this Endangered sub-population at risk if conservation efforts are relaxed in unidentified parts of its range. Yet, the ability of humpback whales to undertake such extensive movements may have also contributed to the apparent recovery of some populations versus other historically exploited whale species. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Humpback Whale Megaptera novaeangliae RI FURG (Repositório da Universidade Federal do Rio Grande) Antarctic Antarctic Peninsula Pacific The Antarctic Endangered Species Research 13 2 117 121 |
institution |
Open Polar |
collection |
RI FURG (Repositório da Universidade Federal do Rio Grande) |
op_collection_id |
ftunivfurg |
language |
English |
topic |
Migration Humpback whale Photo-ID Spatial distribution Conservation |
spellingShingle |
Migration Humpback whale Photo-ID Spatial distribution Conservation Robbins, Jooke Rosa, Luciano Dalla Allen, Judith Mattila, David Secchi, Eduardo Resende Friedlaender, Ari Stevick, Peter Nowacek, Douglas Steel, Debbie Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record |
topic_facet |
Migration Humpback whale Photo-ID Spatial distribution Conservation |
description |
Humpback whales Megaptera novaeangliae are seasonal migrants that mate and calve at low latitudes and feed at mid- to high latitudes. Connections between most Southern Hemisphere breeding and feeding areas are not well understood, but are critical for assessing stock structure and human impacts. Photo-identification was performed to identify the feeding grounds of an Endangered sub-population that breeds in the central South Pacific Ocean (CSP). Identification photographs were obtained from 159 ind. at American Samoa and compared to 3508 Southern Hemisphere humpback whales in the Antarctic Humpback Whale Catalogue (AHWC), including 1352 from Antarctic feeding grounds. Two individuals from American Samoa were seen on 3 occasions at the Antarctic Peninsula. This is the first known feeding site for American Samoa and one of few reliably identified for the CSP. AHWC #2950 was confirmed to have undertaken a round-trip movement of no less than 18 840 km, spanning 108 longitudinal degrees. This represents the largest mammalian migration known to date and a departure from historical assumptions about CSP migratory patterns. The frequency, causes, and fitness implications of such movements have yet to be determined. However, distance is the only known extrinsic barrier to humpback whale movement within oceans, and so maximum individual range is 1 factor potentially affecting population exchange and colonization of new habitats. The movement documented here may place this Endangered sub-population at risk if conservation efforts are relaxed in unidentified parts of its range. Yet, the ability of humpback whales to undertake such extensive movements may have also contributed to the apparent recovery of some populations versus other historically exploited whale species. |
format |
Article in Journal/Newspaper |
author |
Robbins, Jooke Rosa, Luciano Dalla Allen, Judith Mattila, David Secchi, Eduardo Resende Friedlaender, Ari Stevick, Peter Nowacek, Douglas Steel, Debbie |
author_facet |
Robbins, Jooke Rosa, Luciano Dalla Allen, Judith Mattila, David Secchi, Eduardo Resende Friedlaender, Ari Stevick, Peter Nowacek, Douglas Steel, Debbie |
author_sort |
Robbins, Jooke |
title |
Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record |
title_short |
Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record |
title_full |
Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record |
title_fullStr |
Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record |
title_full_unstemmed |
Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record |
title_sort |
return movement of a humpback whale between the antarctic peninsula and american samoa: a seasonal migration record |
publishDate |
2011 |
url |
http://repositorio.furg.br/handle/1/3471 https://doi.org/10.3354/esr00328 |
geographic |
Antarctic Antarctic Peninsula Pacific The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Pacific The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Humpback Whale Megaptera novaeangliae |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Humpback Whale Megaptera novaeangliae |
op_relation |
ROBBINS, Jooke et al. Return movement of a humpback whale between the Antarctic Peninsula and American Samoa: a seasonal migration record. Endangered Species Research, v. 13, p. 117-121, 2011. Disponível em: <http://www.int-res.com/articles/esr_oa/n013p117.pdf>. Acesso em: 19 fev. 2013. http://repositorio.furg.br/handle/1/3471 doi:10.3354/esr00328 |
op_rights |
open access |
op_doi |
https://doi.org/10.3354/esr00328 |
container_title |
Endangered Species Research |
container_volume |
13 |
container_issue |
2 |
container_start_page |
117 |
op_container_end_page |
121 |
_version_ |
1782337283706322944 |