Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean)
The distribution and diet of juvenile (<750 mm) Patagonian toothfish are described from 4 annual trawl surveys (2003-06) around the island of South Georgia in the Atlantic sector of the Southern Ocean. Recruitment of toothfish varies inter-annually, and a single large cohort dominated during the...
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ftnerc:oai:nora.nerc.ac.uk:774 2024-06-09T07:39:21+00:00 Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) Collins, Martin A. Ross, Katherine A. Belchier, Mark Reid, Keith 2007 text http://nora.nerc.ac.uk/id/eprint/774/ https://nora.nerc.ac.uk/id/eprint/774/1/Collins_et_al__toothfish_distribution__diet_Rev_2.pdf http://www.springerlink.com/content/t03546h3731n6416/ en eng Springer https://nora.nerc.ac.uk/id/eprint/774/1/Collins_et_al__toothfish_distribution__diet_Rev_2.pdf Collins, Martin A. orcid:0000-0001-7132-8650 Ross, Katherine A.; Belchier, Mark; Reid, Keith. 2007 Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean). Marine Biology, 152 (1). 135-147. https://doi.org/10.1007/s00227-007-0667-3 <https://doi.org/10.1007/s00227-007-0667-3> Marine Sciences Zoology Publication - Article PeerReviewed 2007 ftnerc https://doi.org/10.1007/s00227-007-0667-3 2024-05-15T08:39:04Z The distribution and diet of juvenile (<750 mm) Patagonian toothfish are described from 4 annual trawl surveys (2003-06) around the island of South Georgia in the Atlantic sector of the Southern Ocean. Recruitment of toothfish varies inter-annually, and a single large cohort dominated during the four years surveyed. Most juveniles were caught on the Shag Rocks shelf to the NW of South Georgia, with fish subsequently dispersing to deeper water around both the South Georgia and Shag Rocks shelves. Mean size of juvenile toothfish increased with depth of capture. Stomach contents analysis was conducted on 795 fish that contained food remains and revealed that juvenile toothfish are essentially piscivorous, with the diet dominated by notothenid fish. The yellow-finned notothen, Patagonotothen guntheri, was the dominant prey at Shag Rocks whilst at South Georgia, where P. guntheri is absent, the dominant prey were Antarctic krill and notothenid fish. The diet changed with size, with an increase in myctophid fish and krill as toothfish grow and disperse. The size of prey also increased with fish size, with a greater range of prey sizes consumed by larger fish. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Patagonian Toothfish Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Shag Rocks ENVELOPE(-42.033,-42.033,-53.550,-53.550) Marine Biology 152 1 135 147 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Zoology |
spellingShingle |
Marine Sciences Zoology Collins, Martin A. Ross, Katherine A. Belchier, Mark Reid, Keith Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) |
topic_facet |
Marine Sciences Zoology |
description |
The distribution and diet of juvenile (<750 mm) Patagonian toothfish are described from 4 annual trawl surveys (2003-06) around the island of South Georgia in the Atlantic sector of the Southern Ocean. Recruitment of toothfish varies inter-annually, and a single large cohort dominated during the four years surveyed. Most juveniles were caught on the Shag Rocks shelf to the NW of South Georgia, with fish subsequently dispersing to deeper water around both the South Georgia and Shag Rocks shelves. Mean size of juvenile toothfish increased with depth of capture. Stomach contents analysis was conducted on 795 fish that contained food remains and revealed that juvenile toothfish are essentially piscivorous, with the diet dominated by notothenid fish. The yellow-finned notothen, Patagonotothen guntheri, was the dominant prey at Shag Rocks whilst at South Georgia, where P. guntheri is absent, the dominant prey were Antarctic krill and notothenid fish. The diet changed with size, with an increase in myctophid fish and krill as toothfish grow and disperse. The size of prey also increased with fish size, with a greater range of prey sizes consumed by larger fish. |
format |
Article in Journal/Newspaper |
author |
Collins, Martin A. Ross, Katherine A. Belchier, Mark Reid, Keith |
author_facet |
Collins, Martin A. Ross, Katherine A. Belchier, Mark Reid, Keith |
author_sort |
Collins, Martin A. |
title |
Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) |
title_short |
Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) |
title_full |
Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) |
title_fullStr |
Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) |
title_full_unstemmed |
Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean) |
title_sort |
distribution and diet of juvenile patagonian toothfish on the south georgia and shag rocks shelves (southern ocean) |
publisher |
Springer |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/774/ https://nora.nerc.ac.uk/id/eprint/774/1/Collins_et_al__toothfish_distribution__diet_Rev_2.pdf http://www.springerlink.com/content/t03546h3731n6416/ |
long_lat |
ENVELOPE(-42.033,-42.033,-53.550,-53.550) |
geographic |
Antarctic Southern Ocean Shag Rocks |
geographic_facet |
Antarctic Southern Ocean Shag Rocks |
genre |
Antarc* Antarctic Antarctic Krill Patagonian Toothfish Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Patagonian Toothfish Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/774/1/Collins_et_al__toothfish_distribution__diet_Rev_2.pdf Collins, Martin A. orcid:0000-0001-7132-8650 Ross, Katherine A.; Belchier, Mark; Reid, Keith. 2007 Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean). Marine Biology, 152 (1). 135-147. https://doi.org/10.1007/s00227-007-0667-3 <https://doi.org/10.1007/s00227-007-0667-3> |
op_doi |
https://doi.org/10.1007/s00227-007-0667-3 |
container_title |
Marine Biology |
container_volume |
152 |
container_issue |
1 |
container_start_page |
135 |
op_container_end_page |
147 |
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1801378902603464704 |