Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters
<qd> Wheeler, J. P., Purchase, C. F., Macdonald, P. D. M., Fill, R., Jacks, L., Wang, H., and Ye, C. 2009. Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring ( Clupea harengus ) in Newfoundland waters. – ICES Journal of Marine Science, 66: 180...
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fthighwire:oai:open-archive.highwire.org:icesjms:66/8/1800 2023-05-15T17:20:45+02:00 Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters Wheeler, J. P. Purchase, C. F. Macdonald, P. D. M. Fill, R. Jacks, L. Wang, H. Ye, C. 2009-09-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/66/8/1800 https://doi.org/10.1093/icesjms/fsp117 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/66/8/1800 http://dx.doi.org/10.1093/icesjms/fsp117 Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2009 fthighwire https://doi.org/10.1093/icesjms/fsp117 2009-11-22T21:15:55Z <qd> Wheeler, J. P., Purchase, C. F., Macdonald, P. D. M., Fill, R., Jacks, L., Wang, H., and Ye, C. 2009. Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring ( Clupea harengus ) in Newfoundland waters. – ICES Journal of Marine Science, 66: 1800–1807. </qd>We investigated temporal trends in some life-history traits of Atlantic herring. Population size of Newfoundland herring stock complexes declined precipitously through the 1970s. Maturation age and size also decreased substantially, but not until the late 1980s. Although significant effects were found for region and gear type, these were only minor compared with the general trend. No effects were found for sex. Changes in maturation age and size can represent an evolutionary response to fishery-induced selection, or phenotypic plasticity as a result of a compensatory response to stock declines, or a response to other changes in the environment. Length-at-age and body condition decreased concurrently with changes in maturation, suggesting that declines in maturation age and size were not a compensatory response to reduced stock sizes. This supports the hypothesis of evolutionary changes in maturation. However, increases observed in the most recent year classes, and concurrent changes in other species, suggest that changes in the environment may have also affected age- and size-at-maturation. Text Newfoundland HighWire Press (Stanford University) ICES Journal of Marine Science 66 8 1800 1807 |
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HighWire Press (Stanford University) |
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English |
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Articles Wheeler, J. P. Purchase, C. F. Macdonald, P. D. M. Fill, R. Jacks, L. Wang, H. Ye, C. Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters |
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Articles |
description |
<qd> Wheeler, J. P., Purchase, C. F., Macdonald, P. D. M., Fill, R., Jacks, L., Wang, H., and Ye, C. 2009. Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring ( Clupea harengus ) in Newfoundland waters. – ICES Journal of Marine Science, 66: 1800–1807. </qd>We investigated temporal trends in some life-history traits of Atlantic herring. Population size of Newfoundland herring stock complexes declined precipitously through the 1970s. Maturation age and size also decreased substantially, but not until the late 1980s. Although significant effects were found for region and gear type, these were only minor compared with the general trend. No effects were found for sex. Changes in maturation age and size can represent an evolutionary response to fishery-induced selection, or phenotypic plasticity as a result of a compensatory response to stock declines, or a response to other changes in the environment. Length-at-age and body condition decreased concurrently with changes in maturation, suggesting that declines in maturation age and size were not a compensatory response to reduced stock sizes. This supports the hypothesis of evolutionary changes in maturation. However, increases observed in the most recent year classes, and concurrent changes in other species, suggest that changes in the environment may have also affected age- and size-at-maturation. |
format |
Text |
author |
Wheeler, J. P. Purchase, C. F. Macdonald, P. D. M. Fill, R. Jacks, L. Wang, H. Ye, C. |
author_facet |
Wheeler, J. P. Purchase, C. F. Macdonald, P. D. M. Fill, R. Jacks, L. Wang, H. Ye, C. |
author_sort |
Wheeler, J. P. |
title |
Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters |
title_short |
Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters |
title_full |
Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters |
title_fullStr |
Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters |
title_full_unstemmed |
Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters |
title_sort |
temporal changes in maturation, mean length-at-age, and condition of spring-spawning atlantic herring (clupea harengus) in newfoundland waters |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/66/8/1800 https://doi.org/10.1093/icesjms/fsp117 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/66/8/1800 http://dx.doi.org/10.1093/icesjms/fsp117 |
op_rights |
Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsp117 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
8 |
container_start_page |
1800 |
op_container_end_page |
1807 |
_version_ |
1766101912843714560 |