Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea
Understanding the patterns of mortality rate in the juvenile stages of exploited fish populations is essential for improving current stock assessment procedures. Most of the research on “the recruitment problem” has focused on the larval stages, but recent work indicates that a large part of the var...
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1998
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fthighwire:oai:open-archive.highwire.org:icesjms:55/3/430 2023-05-15T15:38:36+02:00 Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea de Barros, Pedro Toresen, Reidar 1998-06-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/55/3/430 https://doi.org/10.1006/jmsc.1997.0346 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/55/3/430 http://dx.doi.org/10.1006/jmsc.1997.0346 Copyright (C) 1998, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 1998 fthighwire https://doi.org/10.1006/jmsc.1997.0346 2013-05-27T06:02:50Z Understanding the patterns of mortality rate in the juvenile stages of exploited fish populations is essential for improving current stock assessment procedures. Most of the research on “the recruitment problem” has focused on the larval stages, but recent work indicates that a large part of the variability in year-class strength may be associated to variable mortality rates during the juvenile stages. The data on abundance of juvenile Norwegian spring-spawning herring in the Barents Sea collected by the Bergen Institute of Marine Research between 1983 and 1993 was analysed to test this hypothesis. The results give strong support to the hypothesis. Survival from the start of the 0-group stage to age 3 years may have varied from 0 to 30% for the cohorts investigated. Mortality rate is shown to be strongly age-dependent, and between 75% and 99% of the total juvenile mortality occurs during the first year of life. Text Barents Sea HighWire Press (Stanford University) Barents Sea Bergen ICES Journal of Marine Science 55 3 430 442 |
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HighWire Press (Stanford University) |
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English |
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Articles |
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Articles de Barros, Pedro Toresen, Reidar Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea |
topic_facet |
Articles |
description |
Understanding the patterns of mortality rate in the juvenile stages of exploited fish populations is essential for improving current stock assessment procedures. Most of the research on “the recruitment problem” has focused on the larval stages, but recent work indicates that a large part of the variability in year-class strength may be associated to variable mortality rates during the juvenile stages. The data on abundance of juvenile Norwegian spring-spawning herring in the Barents Sea collected by the Bergen Institute of Marine Research between 1983 and 1993 was analysed to test this hypothesis. The results give strong support to the hypothesis. Survival from the start of the 0-group stage to age 3 years may have varied from 0 to 30% for the cohorts investigated. Mortality rate is shown to be strongly age-dependent, and between 75% and 99% of the total juvenile mortality occurs during the first year of life. |
format |
Text |
author |
de Barros, Pedro Toresen, Reidar |
author_facet |
de Barros, Pedro Toresen, Reidar |
author_sort |
de Barros, Pedro |
title |
Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea |
title_short |
Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea |
title_full |
Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea |
title_fullStr |
Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea |
title_full_unstemmed |
Variable natural mortality rate of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea |
title_sort |
variable natural mortality rate of juvenile norwegian spring-spawning herring (clupea harengus l.) in the barents sea |
publisher |
Oxford University Press |
publishDate |
1998 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/55/3/430 https://doi.org/10.1006/jmsc.1997.0346 |
geographic |
Barents Sea Bergen |
geographic_facet |
Barents Sea Bergen |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/55/3/430 http://dx.doi.org/10.1006/jmsc.1997.0346 |
op_rights |
Copyright (C) 1998, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.1997.0346 |
container_title |
ICES Journal of Marine Science |
container_volume |
55 |
container_issue |
3 |
container_start_page |
430 |
op_container_end_page |
442 |
_version_ |
1766369720391434240 |