Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean)
The distribution, total length ( L T ) frequency and diet of Patagonotothen guntheri are described from 14 bottom trawl surveys conducted on the Shag Rocks and South Georgia shelves in the austral summers from 1986 to 2006. Patagonotothen guntheri (80–265 mm L T ) were caught on the Shag Rocks shelf...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2007.01711.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01711.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01711.x |
id |
crwiley:10.1111/j.1095-8649.2007.01711.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1095-8649.2007.01711.x 2024-10-13T14:03:07+00:00 Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) Collins, M. A. Shreeve, R. S. Fielding, S. Thurston, M. H. 2008 http://dx.doi.org/10.1111/j.1095-8649.2007.01711.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01711.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01711.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 72, issue 1, page 271-286 ISSN 0022-1112 1095-8649 journal-article 2008 crwiley https://doi.org/10.1111/j.1095-8649.2007.01711.x 2024-09-17T04:51:07Z The distribution, total length ( L T ) frequency and diet of Patagonotothen guntheri are described from 14 bottom trawl surveys conducted on the Shag Rocks and South Georgia shelves in the austral summers from 1986 to 2006. Patagonotothen guntheri (80–265 mm L T ) were caught on the Shag Rocks shelf from depths of 111 to 470 m, but no specimens were caught on the South Georgia shelf. Multiple cohorts were present during each survey and L T ‐frequency analysis of these cohorts suggests that growth was slow (von Bertalanffy K = 0·133). Evidence from stomach contents and acoustic data (2005 and 2006) showed that P. guntheri is primarily a pelagic feeder, migrating from the sea floor towards the surface to feed during daylight. The diet of smaller fish (<140 mm) was dominated by copepods, predominantly Rhincalanus gigas , whilst larger fish principally consumed the pelagic hyperiid amphipod, Themisto gaudichaudii and Antarctic krill Euphausia superba . Some larger fish also took benthic prey. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Copepods Wiley Online Library Antarctic Southern Ocean Austral Shag Rocks ENVELOPE(-42.033,-42.033,-53.550,-53.550) Journal of Fish Biology 72 1 271 286 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The distribution, total length ( L T ) frequency and diet of Patagonotothen guntheri are described from 14 bottom trawl surveys conducted on the Shag Rocks and South Georgia shelves in the austral summers from 1986 to 2006. Patagonotothen guntheri (80–265 mm L T ) were caught on the Shag Rocks shelf from depths of 111 to 470 m, but no specimens were caught on the South Georgia shelf. Multiple cohorts were present during each survey and L T ‐frequency analysis of these cohorts suggests that growth was slow (von Bertalanffy K = 0·133). Evidence from stomach contents and acoustic data (2005 and 2006) showed that P. guntheri is primarily a pelagic feeder, migrating from the sea floor towards the surface to feed during daylight. The diet of smaller fish (<140 mm) was dominated by copepods, predominantly Rhincalanus gigas , whilst larger fish principally consumed the pelagic hyperiid amphipod, Themisto gaudichaudii and Antarctic krill Euphausia superba . Some larger fish also took benthic prey. |
format |
Article in Journal/Newspaper |
author |
Collins, M. A. Shreeve, R. S. Fielding, S. Thurston, M. H. |
spellingShingle |
Collins, M. A. Shreeve, R. S. Fielding, S. Thurston, M. H. Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) |
author_facet |
Collins, M. A. Shreeve, R. S. Fielding, S. Thurston, M. H. |
author_sort |
Collins, M. A. |
title |
Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) |
title_short |
Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) |
title_full |
Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) |
title_fullStr |
Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) |
title_full_unstemmed |
Distribution, growth, diet and foraging behaviour of the yellow‐fin notothen Patagonotothen guntheri (Norman) on the Shag Rocks shelf (Southern Ocean) |
title_sort |
distribution, growth, diet and foraging behaviour of the yellow‐fin notothen patagonotothen guntheri (norman) on the shag rocks shelf (southern ocean) |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2007.01711.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01711.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01711.x |
long_lat |
ENVELOPE(-42.033,-42.033,-53.550,-53.550) |
geographic |
Antarctic Southern Ocean Austral Shag Rocks |
geographic_facet |
Antarctic Southern Ocean Austral Shag Rocks |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Copepods |
op_source |
Journal of Fish Biology volume 72, issue 1, page 271-286 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2007.01711.x |
container_title |
Journal of Fish Biology |
container_volume |
72 |
container_issue |
1 |
container_start_page |
271 |
op_container_end_page |
286 |
_version_ |
1812819540561625088 |