Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid
The survival of one-year-old cod ( Gadus morhua ), haddock ( Melanogrammus aegle-finus ) and whiting ( Merlangius merlangus ), excluded from a shrimp trawl by a diagonal metal grid placed in front of the codend (the Nordmøre grid), was studied during June 1993 and 1994. Fish leaving the gear in fron...
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1997
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fthighwire:oai:open-archive.highwire.org:icesjms:54/1/117 2023-05-15T16:19:09+02:00 Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid Soldal, Aud Vold Engås, Arill 1997-02-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/54/1/117 https://doi.org/10.1006/jmsc.1996.0175 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/54/1/117 http://dx.doi.org/10.1006/jmsc.1996.0175 Copyright (C) 1997, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 1997 fthighwire https://doi.org/10.1006/jmsc.1996.0175 2013-05-27T06:33:50Z The survival of one-year-old cod ( Gadus morhua ), haddock ( Melanogrammus aegle-finus ) and whiting ( Merlangius merlangus ), excluded from a shrimp trawl by a diagonal metal grid placed in front of the codend (the Nordmøre grid), was studied during June 1993 and 1994. Fish leaving the gear in front of this grid during trawling were retained by a net covering the fish outlet, and led into a collecting cage. The collecting cages were released from the trawl at the fishing depth and anchored for 5 to 12 days. The fish in the cages were then observed daily by underwater television, and in the second season also by divers. The escapees from separate trawl hauls were analysed for body damage. No mortality was found among the young gadoids during the observation period, except for one haddock in the control group. There were almost no visible skin injuries or scale loss in cod, while in whiting and haddock there was a significantly larger incidence of these factors. No correlation was observed between fish size and the amount of scale loss. Text Gadus morhua HighWire Press (Stanford University) Nordmøre ENVELOPE(8.500,8.500,63.000,63.000) ICES Journal of Marine Science 54 1 117 124 |
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HighWire Press (Stanford University) |
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fthighwire |
language |
English |
topic |
Articles |
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Articles Soldal, Aud Vold Engås, Arill Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
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Articles |
description |
The survival of one-year-old cod ( Gadus morhua ), haddock ( Melanogrammus aegle-finus ) and whiting ( Merlangius merlangus ), excluded from a shrimp trawl by a diagonal metal grid placed in front of the codend (the Nordmøre grid), was studied during June 1993 and 1994. Fish leaving the gear in front of this grid during trawling were retained by a net covering the fish outlet, and led into a collecting cage. The collecting cages were released from the trawl at the fishing depth and anchored for 5 to 12 days. The fish in the cages were then observed daily by underwater television, and in the second season also by divers. The escapees from separate trawl hauls were analysed for body damage. No mortality was found among the young gadoids during the observation period, except for one haddock in the control group. There were almost no visible skin injuries or scale loss in cod, while in whiting and haddock there was a significantly larger incidence of these factors. No correlation was observed between fish size and the amount of scale loss. |
format |
Text |
author |
Soldal, Aud Vold Engås, Arill |
author_facet |
Soldal, Aud Vold Engås, Arill |
author_sort |
Soldal, Aud Vold |
title |
Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
title_short |
Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
title_full |
Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
title_fullStr |
Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
title_full_unstemmed |
Survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
title_sort |
survival of young gadoids excluded from a shrimp trawl by a rigid deflecting grid |
publisher |
Oxford University Press |
publishDate |
1997 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/54/1/117 https://doi.org/10.1006/jmsc.1996.0175 |
long_lat |
ENVELOPE(8.500,8.500,63.000,63.000) |
geographic |
Nordmøre |
geographic_facet |
Nordmøre |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/54/1/117 http://dx.doi.org/10.1006/jmsc.1996.0175 |
op_rights |
Copyright (C) 1997, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.1996.0175 |
container_title |
ICES Journal of Marine Science |
container_volume |
54 |
container_issue |
1 |
container_start_page |
117 |
op_container_end_page |
124 |
_version_ |
1766005490888736768 |