Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters
The species, distributions and abundances of squids in the Southern Ocean are difficult to assess by conventional oceanographic means. The study of the food and feeding ecology of squid-eating predators such as procellariiform seabirds appears to be a supplemental way to collect useful information o...
Published in: | Marine Ecology Progress Series |
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Inter-Research
1995
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Online Access: | https://oceanrep.geomar.de/id/eprint/38502/ https://oceanrep.geomar.de/id/eprint/38502/1/2884.pdf https://doi.org/10.3354/meps129295 |
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ftoceanrep:oai:oceanrep.geomar.de:38502 2023-05-15T18:25:40+02:00 Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters Cherel, Y. Weimerskirch, H. 1995 text https://oceanrep.geomar.de/id/eprint/38502/ https://oceanrep.geomar.de/id/eprint/38502/1/2884.pdf https://doi.org/10.3354/meps129295 en eng Inter-Research https://oceanrep.geomar.de/id/eprint/38502/1/2884.pdf Cherel, Y. and Weimerskirch, H. (1995) Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters. Open Access Marine Ecology Progress Series, 129 . pp. 295-300. DOI 10.3354/meps129295 <https://doi.org/10.3354/meps129295>. doi:10.3354/meps129295 info:eu-repo/semantics/openAccess Article PeerReviewed 1995 ftoceanrep https://doi.org/10.3354/meps129295 2023-04-07T15:34:04Z The species, distributions and abundances of squids in the Southern Ocean are difficult to assess by conventional oceanographic means. The study of the food and feeding ecology of squid-eating predators such as procellariiform seabirds appears to be a supplemental way to collect useful information on cephalopod biology. Regurgitations were collected from 52 chicks of the black-browed albatross Diomedea melanophrys at Kerguelen Island in February 1994. Cephalopod remains were removed and identified by means of beaks, gladius and mantle. Squid beaks of the family Ommastrephidae amounted to 55 % (n = 348) of the accumulated squid beaks. They were also those most often regurgitated in association with partially digested crowns and mantles (90 % of the squid fresh remains, n = 28). Two species of ommastrephids equally dominated the squid diet, Martialia hyadesi (only found once in Kerguelen waters) and a Todarodes species, probably T. angolensis, previously unknown in the area. The concomitant satellite tracking of 16 adult birds over a total of 35 foraging trips identified their main feeding areas as the inner shelf break to the NE and over a bank to the SE of Kerguelen Island. Taken together, albatross dietary and foraging data indicate that juveniles of M. hyadesi and Todarodes sp, concentrate over the upper shelf slope to the east of Kerguelen Island, some of them occurring in the top 5 m of the water column where they are caught by the albatrosses. Article in Journal/Newspaper Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Southern Ocean Marine Ecology Progress Series 129 295 300 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The species, distributions and abundances of squids in the Southern Ocean are difficult to assess by conventional oceanographic means. The study of the food and feeding ecology of squid-eating predators such as procellariiform seabirds appears to be a supplemental way to collect useful information on cephalopod biology. Regurgitations were collected from 52 chicks of the black-browed albatross Diomedea melanophrys at Kerguelen Island in February 1994. Cephalopod remains were removed and identified by means of beaks, gladius and mantle. Squid beaks of the family Ommastrephidae amounted to 55 % (n = 348) of the accumulated squid beaks. They were also those most often regurgitated in association with partially digested crowns and mantles (90 % of the squid fresh remains, n = 28). Two species of ommastrephids equally dominated the squid diet, Martialia hyadesi (only found once in Kerguelen waters) and a Todarodes species, probably T. angolensis, previously unknown in the area. The concomitant satellite tracking of 16 adult birds over a total of 35 foraging trips identified their main feeding areas as the inner shelf break to the NE and over a bank to the SE of Kerguelen Island. Taken together, albatross dietary and foraging data indicate that juveniles of M. hyadesi and Todarodes sp, concentrate over the upper shelf slope to the east of Kerguelen Island, some of them occurring in the top 5 m of the water column where they are caught by the albatrosses. |
format |
Article in Journal/Newspaper |
author |
Cherel, Y. Weimerskirch, H. |
spellingShingle |
Cherel, Y. Weimerskirch, H. Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters |
author_facet |
Cherel, Y. Weimerskirch, H. |
author_sort |
Cherel, Y. |
title |
Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters |
title_short |
Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters |
title_full |
Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters |
title_fullStr |
Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters |
title_full_unstemmed |
Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters |
title_sort |
seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in kerguelen waters |
publisher |
Inter-Research |
publishDate |
1995 |
url |
https://oceanrep.geomar.de/id/eprint/38502/ https://oceanrep.geomar.de/id/eprint/38502/1/2884.pdf https://doi.org/10.3354/meps129295 |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Kerguelen Kerguelen Island Southern Ocean |
geographic_facet |
Kerguelen Kerguelen Island Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/38502/1/2884.pdf Cherel, Y. and Weimerskirch, H. (1995) Seabirds as indicators of marine resources:black-browed albatrosses feeding on ommastrephid squids in Kerguelen waters. Open Access Marine Ecology Progress Series, 129 . pp. 295-300. DOI 10.3354/meps129295 <https://doi.org/10.3354/meps129295>. doi:10.3354/meps129295 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps129295 |
container_title |
Marine Ecology Progress Series |
container_volume |
129 |
container_start_page |
295 |
op_container_end_page |
300 |
_version_ |
1766207264649117696 |