Biological Characteristics of a Herring Population on the South Coast of Newfoundland
A study of herring was undertaken at the onset of a period of increased exploitation. Catches were examined for length and age composition, growth rates, length–weight relationship, sex, maturity, and fatness.Mean length (33.0 cm) and mean age (8.2 years) were smaller than recorded from earlier inve...
Published in: | Journal of the Fisheries Research Board of Canada |
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Language: | English |
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Canadian Science Publishing
1966
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Online Access: | http://dx.doi.org/10.1139/f66-073 http://www.nrcresearchpress.com/doi/pdf/10.1139/f66-073 |
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crcansciencepubl:10.1139/f66-073 2023-12-17T10:44:51+01:00 Biological Characteristics of a Herring Population on the South Coast of Newfoundland Humphreys, R. D. 1966 http://dx.doi.org/10.1139/f66-073 http://www.nrcresearchpress.com/doi/pdf/10.1139/f66-073 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 23, issue 6, page 797-804 ISSN 0015-296X General Medicine journal-article 1966 crcansciencepubl https://doi.org/10.1139/f66-073 2023-11-19T13:39:23Z A study of herring was undertaken at the onset of a period of increased exploitation. Catches were examined for length and age composition, growth rates, length–weight relationship, sex, maturity, and fatness.Mean length (33.0 cm) and mean age (8.2 years) were smaller than recorded from earlier investigations, but growth rates have not changed appreciably. Winter-caught herring are of poor quality ranging in fat content between 2.3 and 7.7% of their wet weights.An increase in the proportion of herring with immature gonads as the season progresses and a complete gradation of otolith types from spring-spawned to fall-spawned types suggests: (1) exploitation of fish that previously did not enter the fishery until later in the season, and (2) a spawning season that extends over the spring, summer, and autumn months. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 23 6 797 804 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Humphreys, R. D. Biological Characteristics of a Herring Population on the South Coast of Newfoundland |
topic_facet |
General Medicine |
description |
A study of herring was undertaken at the onset of a period of increased exploitation. Catches were examined for length and age composition, growth rates, length–weight relationship, sex, maturity, and fatness.Mean length (33.0 cm) and mean age (8.2 years) were smaller than recorded from earlier investigations, but growth rates have not changed appreciably. Winter-caught herring are of poor quality ranging in fat content between 2.3 and 7.7% of their wet weights.An increase in the proportion of herring with immature gonads as the season progresses and a complete gradation of otolith types from spring-spawned to fall-spawned types suggests: (1) exploitation of fish that previously did not enter the fishery until later in the season, and (2) a spawning season that extends over the spring, summer, and autumn months. |
format |
Article in Journal/Newspaper |
author |
Humphreys, R. D. |
author_facet |
Humphreys, R. D. |
author_sort |
Humphreys, R. D. |
title |
Biological Characteristics of a Herring Population on the South Coast of Newfoundland |
title_short |
Biological Characteristics of a Herring Population on the South Coast of Newfoundland |
title_full |
Biological Characteristics of a Herring Population on the South Coast of Newfoundland |
title_fullStr |
Biological Characteristics of a Herring Population on the South Coast of Newfoundland |
title_full_unstemmed |
Biological Characteristics of a Herring Population on the South Coast of Newfoundland |
title_sort |
biological characteristics of a herring population on the south coast of newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1966 |
url |
http://dx.doi.org/10.1139/f66-073 http://www.nrcresearchpress.com/doi/pdf/10.1139/f66-073 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Journal of the Fisheries Research Board of Canada volume 23, issue 6, page 797-804 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f66-073 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
23 |
container_issue |
6 |
container_start_page |
797 |
op_container_end_page |
804 |
_version_ |
1785564180476067840 |