Temporal changes in maturation, mean length-at-age, and condition of spring-spawning Atlantic herring (Clupea harengus) in Newfoundland waters
Abstract 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: 1800–18...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsp117 http://academic.oup.com/icesjms/article-pdf/66/8/1800/29134995/fsp117.pdf |
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croxfordunivpr:10.1093/icesjms/fsp117 2023-12-31T10:18:12+01:00 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 http://dx.doi.org/10.1093/icesjms/fsp117 http://academic.oup.com/icesjms/article-pdf/66/8/1800/29134995/fsp117.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 66, issue 8, page 1800-1807 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2009 croxfordunivpr https://doi.org/10.1093/icesjms/fsp117 2023-12-06T08:39:27Z Abstract 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. 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. Article in Journal/Newspaper Newfoundland Oxford University Press (via Crossref) ICES Journal of Marine Science 66 8 1800 1807 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography 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 |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract 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. 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 |
Article in Journal/Newspaper |
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 (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/icesjms/fsp117 http://academic.oup.com/icesjms/article-pdf/66/8/1800/29134995/fsp117.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
ICES Journal of Marine Science volume 66, issue 8, page 1800-1807 ISSN 1095-9289 1054-3139 |
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_ |
1786819546862059520 |