Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities
The beaks of 9,994 cephalopods of 61 species, obtained mainly from chick regurgitations of wandering albatrosses (Diomedea exulans L.) at Gough, Auckland, Antipodes, Prince Edward and Macquarie Islands and South Georgia, were used to specify and calculate the biomass of cephalopods consumed. Histiot...
Published in: | Journal of the Royal Society of New Zealand |
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1992
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Online Access: | https://oceanrep.geomar.de/id/eprint/37195/ https://oceanrep.geomar.de/id/eprint/37195/1/2343.pdf https://doi.org/10.1080/03036758.1992.10420819 |
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ftoceanrep:oai:oceanrep.geomar.de:37195 2023-05-15T14:11:08+02:00 Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities Imber, M.J. 1992 text https://oceanrep.geomar.de/id/eprint/37195/ https://oceanrep.geomar.de/id/eprint/37195/1/2343.pdf https://doi.org/10.1080/03036758.1992.10420819 en eng Taylor & Francis https://oceanrep.geomar.de/id/eprint/37195/1/2343.pdf Imber, M. J. (1992) Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities. Journal of the Royal Society of New Zealand, 22 (4). pp. 243-263. DOI 10.1080/03036758.1992.10420819 <https://doi.org/10.1080/03036758.1992.10420819>. doi:10.1080/03036758.1992.10420819 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1992 ftoceanrep https://doi.org/10.1080/03036758.1992.10420819 2023-04-07T15:32:05Z The beaks of 9,994 cephalopods of 61 species, obtained mainly from chick regurgitations of wandering albatrosses (Diomedea exulans L.) at Gough, Auckland, Antipodes, Prince Edward and Macquarie Islands and South Georgia, were used to specify and calculate the biomass of cephalopods consumed. Histioteuthidae were most important by numbers and biomass at Gough Island (in warmest seas), but Onycboteuthidae increasingly superseded them southwards; Kondakovia longimana formed 59 to 75% of biomass eaten at the three localities nearest the Antarctic Polar Front. Other important families were Octopoteuthidae, Cranchiidae, Architeuthidae (juveniles) and Ommastrephidae (South Georgia only). Most frequently eaten were Histioteuthis atlantica 13.7%, Galiteuthis glacialis 12.4%, H. eltaninae 12.0% and Kondakovia longimana 11.6%. Wandering albatrosses rearing chicks can forage at least to 3,000 km in a single foray, and may exploit an important food source about 1200 km from the nest (as in the probable commensalism of South Georgian birds with the Falkland Islands fishery). They feed, sometimes opportunistically, on cephalopods active or moribund at the surface, or discarded or lost by trawlers, cetaceans or seals. Vertically migrating cephalopods, especially bioluminescent species, are disproportionately frequent in their non-commensal diet, suggesting that they often feed at night. Article in Journal/Newspaper Antarc* Antarctic Diomedea exulans OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic The Antarctic Gough ENVELOPE(159.367,159.367,-81.633,-81.633) Journal of the Royal Society of New Zealand 22 4 243 263 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The beaks of 9,994 cephalopods of 61 species, obtained mainly from chick regurgitations of wandering albatrosses (Diomedea exulans L.) at Gough, Auckland, Antipodes, Prince Edward and Macquarie Islands and South Georgia, were used to specify and calculate the biomass of cephalopods consumed. Histioteuthidae were most important by numbers and biomass at Gough Island (in warmest seas), but Onycboteuthidae increasingly superseded them southwards; Kondakovia longimana formed 59 to 75% of biomass eaten at the three localities nearest the Antarctic Polar Front. Other important families were Octopoteuthidae, Cranchiidae, Architeuthidae (juveniles) and Ommastrephidae (South Georgia only). Most frequently eaten were Histioteuthis atlantica 13.7%, Galiteuthis glacialis 12.4%, H. eltaninae 12.0% and Kondakovia longimana 11.6%. Wandering albatrosses rearing chicks can forage at least to 3,000 km in a single foray, and may exploit an important food source about 1200 km from the nest (as in the probable commensalism of South Georgian birds with the Falkland Islands fishery). They feed, sometimes opportunistically, on cephalopods active or moribund at the surface, or discarded or lost by trawlers, cetaceans or seals. Vertically migrating cephalopods, especially bioluminescent species, are disproportionately frequent in their non-commensal diet, suggesting that they often feed at night. |
format |
Article in Journal/Newspaper |
author |
Imber, M.J. |
spellingShingle |
Imber, M.J. Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities |
author_facet |
Imber, M.J. |
author_sort |
Imber, M.J. |
title |
Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities |
title_short |
Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities |
title_full |
Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities |
title_fullStr |
Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities |
title_full_unstemmed |
Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities |
title_sort |
cephalopods eaten by wandering albatrosses (diomedea exulansl.) breeding at six circumpolar localities |
publisher |
Taylor & Francis |
publishDate |
1992 |
url |
https://oceanrep.geomar.de/id/eprint/37195/ https://oceanrep.geomar.de/id/eprint/37195/1/2343.pdf https://doi.org/10.1080/03036758.1992.10420819 |
long_lat |
ENVELOPE(159.367,159.367,-81.633,-81.633) |
geographic |
Antarctic The Antarctic Gough |
geographic_facet |
Antarctic The Antarctic Gough |
genre |
Antarc* Antarctic Diomedea exulans |
genre_facet |
Antarc* Antarctic Diomedea exulans |
op_relation |
https://oceanrep.geomar.de/id/eprint/37195/1/2343.pdf Imber, M. J. (1992) Cephalopods eaten by wandering albatrosses (Diomedea exulansL.) breeding at six circumpolar localities. Journal of the Royal Society of New Zealand, 22 (4). pp. 243-263. DOI 10.1080/03036758.1992.10420819 <https://doi.org/10.1080/03036758.1992.10420819>. doi:10.1080/03036758.1992.10420819 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/03036758.1992.10420819 |
container_title |
Journal of the Royal Society of New Zealand |
container_volume |
22 |
container_issue |
4 |
container_start_page |
243 |
op_container_end_page |
263 |
_version_ |
1766283261888167936 |