Sexual and geographical variation in life history parameters of the shorthorn sculpin
A total of 293 shorthorn sculpins Myoxocephalus scorpius from Tromsø, northern Norway, were sampled between November 1998 and April 1999 to determine sex, total length, age, growth, maturity and mortality. Females grew to larger sizes ( L ∞ =26·9 v. 18·5 cm), matured later (2 v. 1 year of age) at la...
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crwiley:10.1111/j.1095-8649.2002.tb02489.x 2024-06-02T08:10:44+00:00 Sexual and geographical variation in life history parameters of the shorthorn sculpin Luksenburg, J. A. Pedersen, T. 2002 http://dx.doi.org/10.1111/j.1095-8649.2002.tb02489.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb02489.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb02489.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 61, issue 6, page 1453-1464 ISSN 0022-1112 1095-8649 journal-article 2002 crwiley https://doi.org/10.1111/j.1095-8649.2002.tb02489.x 2024-05-03T11:29:36Z A total of 293 shorthorn sculpins Myoxocephalus scorpius from Tromsø, northern Norway, were sampled between November 1998 and April 1999 to determine sex, total length, age, growth, maturity and mortality. Females grew to larger sizes ( L ∞ =26·9 v. 18·5 cm), matured later (2 v. 1 year of age) at larger size (maturation length=16 v. 14 cm L T ), and had lower instantaneous mortality rates (0·93 v. 1·20 year −1 ) than males. The life history parameters of shorthorn sculpins in northern Norway were more similar to the parameters of short‐lived central European populations than to the parameters of the long‐lived population of Newfoundland. This study confirms that northern Norwegian shorthorn sculpins exhibit sexual dimorphism as in other shorthorn sculpin populations. The relationships between growth pattern, age at maturity and mortality rates observed in the Tromsø population and in other shorthorn sculpin populations, correspond well with the predictions from a published life history model. Article in Journal/Newspaper Newfoundland Northern Norway Tromsø Wiley Online Library Norway Tromsø Journal of Fish Biology 61 6 1453 1464 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
A total of 293 shorthorn sculpins Myoxocephalus scorpius from Tromsø, northern Norway, were sampled between November 1998 and April 1999 to determine sex, total length, age, growth, maturity and mortality. Females grew to larger sizes ( L ∞ =26·9 v. 18·5 cm), matured later (2 v. 1 year of age) at larger size (maturation length=16 v. 14 cm L T ), and had lower instantaneous mortality rates (0·93 v. 1·20 year −1 ) than males. The life history parameters of shorthorn sculpins in northern Norway were more similar to the parameters of short‐lived central European populations than to the parameters of the long‐lived population of Newfoundland. This study confirms that northern Norwegian shorthorn sculpins exhibit sexual dimorphism as in other shorthorn sculpin populations. The relationships between growth pattern, age at maturity and mortality rates observed in the Tromsø population and in other shorthorn sculpin populations, correspond well with the predictions from a published life history model. |
format |
Article in Journal/Newspaper |
author |
Luksenburg, J. A. Pedersen, T. |
spellingShingle |
Luksenburg, J. A. Pedersen, T. Sexual and geographical variation in life history parameters of the shorthorn sculpin |
author_facet |
Luksenburg, J. A. Pedersen, T. |
author_sort |
Luksenburg, J. A. |
title |
Sexual and geographical variation in life history parameters of the shorthorn sculpin |
title_short |
Sexual and geographical variation in life history parameters of the shorthorn sculpin |
title_full |
Sexual and geographical variation in life history parameters of the shorthorn sculpin |
title_fullStr |
Sexual and geographical variation in life history parameters of the shorthorn sculpin |
title_full_unstemmed |
Sexual and geographical variation in life history parameters of the shorthorn sculpin |
title_sort |
sexual and geographical variation in life history parameters of the shorthorn sculpin |
publisher |
Wiley |
publishDate |
2002 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2002.tb02489.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb02489.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb02489.x |
geographic |
Norway Tromsø |
geographic_facet |
Norway Tromsø |
genre |
Newfoundland Northern Norway Tromsø |
genre_facet |
Newfoundland Northern Norway Tromsø |
op_source |
Journal of Fish Biology volume 61, issue 6, page 1453-1464 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2002.tb02489.x |
container_title |
Journal of Fish Biology |
container_volume |
61 |
container_issue |
6 |
container_start_page |
1453 |
op_container_end_page |
1464 |
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1800756638207967232 |