Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks
Abstract Pseudochaenichthys georgianus is a member of the unique Channichthyidae family of fishes, which lack haemoglobin. The distribution, length-frequency and summer diet are described from 14 bottom trawl surveys undertaken in the summers between 1986 and 2006. Pseudochaenichthys georgianus (50–...
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Online Access: | http://dx.doi.org/10.1017/s0954102008000990 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008000990 |
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crcambridgeupr:10.1017/s0954102008000990 2024-03-03T08:37:39+00:00 Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks Clarke, Sarah Reid, William D.K. Collins, Martin A. Belchier, Mark 2008 http://dx.doi.org/10.1017/s0954102008000990 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008000990 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 20, issue 4, page 343-353 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2008 crcambridgeupr https://doi.org/10.1017/s0954102008000990 2024-02-08T08:43:44Z Abstract Pseudochaenichthys georgianus is a member of the unique Channichthyidae family of fishes, which lack haemoglobin. The distribution, length-frequency and summer diet are described from 14 bottom trawl surveys undertaken in the summers between 1986 and 2006. Pseudochaenichthys georgianus (50–590 mm TL) were caught throughout the South Georgia shelf from depths of 76–370 m, but very few specimens (< 1%) were caught on the Shag Rocks shelf. Multiple cohorts were present during each survey and length-frequency analysis of these cohorts suggests that growth is fast during the first 3–4 years. Stomach contents analysis (2005 & 2006) indicated that P. georgianus is a pelagic or semi pelagic predator, with the summer diet dominated by Antarctic krill ( Euphausia superba ). Fish (channichthyids and notothenids) were also taken, but were a relatively minor part of the diet. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Science Euphausia superba Icefish Cambridge University Press Antarctic Shag Rocks ENVELOPE(-42.033,-42.033,-53.550,-53.550) Antarctic Science 20 4 343 353 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Clarke, Sarah Reid, William D.K. Collins, Martin A. Belchier, Mark Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Pseudochaenichthys georgianus is a member of the unique Channichthyidae family of fishes, which lack haemoglobin. The distribution, length-frequency and summer diet are described from 14 bottom trawl surveys undertaken in the summers between 1986 and 2006. Pseudochaenichthys georgianus (50–590 mm TL) were caught throughout the South Georgia shelf from depths of 76–370 m, but very few specimens (< 1%) were caught on the Shag Rocks shelf. Multiple cohorts were present during each survey and length-frequency analysis of these cohorts suggests that growth is fast during the first 3–4 years. Stomach contents analysis (2005 & 2006) indicated that P. georgianus is a pelagic or semi pelagic predator, with the summer diet dominated by Antarctic krill ( Euphausia superba ). Fish (channichthyids and notothenids) were also taken, but were a relatively minor part of the diet. |
format |
Article in Journal/Newspaper |
author |
Clarke, Sarah Reid, William D.K. Collins, Martin A. Belchier, Mark |
author_facet |
Clarke, Sarah Reid, William D.K. Collins, Martin A. Belchier, Mark |
author_sort |
Clarke, Sarah |
title |
Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks |
title_short |
Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks |
title_full |
Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks |
title_fullStr |
Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks |
title_full_unstemmed |
Biology and distribution of South Georgia icefish ( Pseudochaenichthys georgianus ) around South Georgia and Shag Rocks |
title_sort |
biology and distribution of south georgia icefish ( pseudochaenichthys georgianus ) around south georgia and shag rocks |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1017/s0954102008000990 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008000990 |
long_lat |
ENVELOPE(-42.033,-42.033,-53.550,-53.550) |
geographic |
Antarctic Shag Rocks |
geographic_facet |
Antarctic Shag Rocks |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Science Euphausia superba Icefish |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Science Euphausia superba Icefish |
op_source |
Antarctic Science volume 20, issue 4, page 343-353 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102008000990 |
container_title |
Antarctic Science |
container_volume |
20 |
container_issue |
4 |
container_start_page |
343 |
op_container_end_page |
353 |
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1792500504338628608 |