Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia
Early stages of toothfish are reported from cruises between 1978 and 2001. South Georgia was regularly sampled, Shag Rocks was briefly sampled in three summers, and Burdwood Bank was sampled in 1997. Most samples were using 8 m(2) and 1 m(2) nets in the upper 250 m and upper 3 m, respectively. Forty...
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Cambridge University Press
2002
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ftnerc:oai:nora.nerc.ac.uk:13602 2023-05-15T14:14:50+02:00 Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia North, A.W. 2002 http://nora.nerc.ac.uk/id/eprint/13602/ unknown Cambridge University Press North, A.W. 2002 Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia. Antarctic Science, 14 (1). 25-31. https://doi.org/10.1017/S0954102002000548 <https://doi.org/10.1017/S0954102002000548> Marine Sciences Ecology and Environment Publication - Article PeerReviewed 2002 ftnerc https://doi.org/10.1017/S0954102002000548 2023-02-04T19:28:43Z Early stages of toothfish are reported from cruises between 1978 and 2001. South Georgia was regularly sampled, Shag Rocks was briefly sampled in three summers, and Burdwood Bank was sampled in 1997. Most samples were using 8 m(2) and 1 m(2) nets in the upper 250 m and upper 3 m, respectively. Forty-three pelagic larval/early juvenile stages between 18.2 and 63 mm standard length (L-s) were taken between December and March. Four specimens were taken at Burdwood Bank, one at Shag Rocks, and 3 8 at South Georgia. Forty fish were from the upper 25 0 m and 23 from the upper 3 m. They occurred onshelf and offshore over water depths between 10 and 3000 in. Estimated growth rate, at South Georgia from 11 cohorts (including published data), is c. 1% L-s d(-1) (n = 39). From this and a hatch size of 15 mm L-s, the predicted hatching season is November to mid-December. From seven trawl surveys during summer at South Georgia and Shag Rocks between 1986 and 2000, the mean depth of the smaller demersal juveniles 13-25 cm. total length (L-T) was < 140 m, indicating that early juveniles probably migrate inshore. Article in Journal/Newspaper Antarctic Science Patagonian Toothfish Natural Environment Research Council: NERC Open Research Archive Burdwood Bank ENVELOPE(-59.000,-59.000,-54.250,-54.250) Shag Rocks ENVELOPE(-42.033,-42.033,-53.550,-53.550) Antarctic Science 14 1 25 31 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Ecology and Environment |
spellingShingle |
Marine Sciences Ecology and Environment North, A.W. Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia |
topic_facet |
Marine Sciences Ecology and Environment |
description |
Early stages of toothfish are reported from cruises between 1978 and 2001. South Georgia was regularly sampled, Shag Rocks was briefly sampled in three summers, and Burdwood Bank was sampled in 1997. Most samples were using 8 m(2) and 1 m(2) nets in the upper 250 m and upper 3 m, respectively. Forty-three pelagic larval/early juvenile stages between 18.2 and 63 mm standard length (L-s) were taken between December and March. Four specimens were taken at Burdwood Bank, one at Shag Rocks, and 3 8 at South Georgia. Forty fish were from the upper 25 0 m and 23 from the upper 3 m. They occurred onshelf and offshore over water depths between 10 and 3000 in. Estimated growth rate, at South Georgia from 11 cohorts (including published data), is c. 1% L-s d(-1) (n = 39). From this and a hatch size of 15 mm L-s, the predicted hatching season is November to mid-December. From seven trawl surveys during summer at South Georgia and Shag Rocks between 1986 and 2000, the mean depth of the smaller demersal juveniles 13-25 cm. total length (L-T) was < 140 m, indicating that early juveniles probably migrate inshore. |
format |
Article in Journal/Newspaper |
author |
North, A.W. |
author_facet |
North, A.W. |
author_sort |
North, A.W. |
title |
Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia |
title_short |
Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia |
title_full |
Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia |
title_fullStr |
Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia |
title_full_unstemmed |
Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia |
title_sort |
larval and juvenile distribution and growth of patagonian toothfish around south georgia |
publisher |
Cambridge University Press |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/13602/ |
long_lat |
ENVELOPE(-59.000,-59.000,-54.250,-54.250) ENVELOPE(-42.033,-42.033,-53.550,-53.550) |
geographic |
Burdwood Bank Shag Rocks |
geographic_facet |
Burdwood Bank Shag Rocks |
genre |
Antarctic Science Patagonian Toothfish |
genre_facet |
Antarctic Science Patagonian Toothfish |
op_relation |
North, A.W. 2002 Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia. Antarctic Science, 14 (1). 25-31. https://doi.org/10.1017/S0954102002000548 <https://doi.org/10.1017/S0954102002000548> |
op_doi |
https://doi.org/10.1017/S0954102002000548 |
container_title |
Antarctic Science |
container_volume |
14 |
container_issue |
1 |
container_start_page |
25 |
op_container_end_page |
31 |
_version_ |
1766287213242351616 |