Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models
This study presents the first intraspecific evaluation of larval growth performance across several different experimental scales, environments, and regions of a marine fish species. Size- and temperature-dependent growth models for larval and early juvenile Atlantic cod (Gadus morhua) are developed...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f05-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-008 |
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crcansciencepubl:10.1139/f05-008 2024-06-23T07:51:03+00:00 Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models Folkvord, A 2005 http://dx.doi.org/10.1139/f05-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-008 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 62, issue 5, page 1037-1052 ISSN 0706-652X 1205-7533 journal-article 2005 crcansciencepubl https://doi.org/10.1139/f05-008 2024-05-30T08:13:49Z This study presents the first intraspecific evaluation of larval growth performance across several different experimental scales, environments, and regions of a marine fish species. Size- and temperature-dependent growth models for larval and early juvenile Atlantic cod (Gadus morhua) are developed based on selected laboratory experiments with cod fed in excess. Observed sizes-at-age of cod from several experiments and stocks are compared with predictions from the models using initial size and ambient temperature history as inputs. Comparisons with results from other laboratory experiments reveal that the model predictions represent relatively high growth rates. Results from enclosure experiments under controlled seminatural conditions generally provide growth rates similar to those predicted from the models. The models therefore produce suitable reference growth predictions against which field-based growth estimates can be compared. These comparisons suggest that surviving cod larvae in the sea typically grow at rates close to their size- and temperature-dependent capacity. This suggests that climatic influences will strongly affect the year-to-year variations in growth of cod during their early life history owing to their markedly temperature-dependent growth potential. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 62 5 1037 1052 |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
This study presents the first intraspecific evaluation of larval growth performance across several different experimental scales, environments, and regions of a marine fish species. Size- and temperature-dependent growth models for larval and early juvenile Atlantic cod (Gadus morhua) are developed based on selected laboratory experiments with cod fed in excess. Observed sizes-at-age of cod from several experiments and stocks are compared with predictions from the models using initial size and ambient temperature history as inputs. Comparisons with results from other laboratory experiments reveal that the model predictions represent relatively high growth rates. Results from enclosure experiments under controlled seminatural conditions generally provide growth rates similar to those predicted from the models. The models therefore produce suitable reference growth predictions against which field-based growth estimates can be compared. These comparisons suggest that surviving cod larvae in the sea typically grow at rates close to their size- and temperature-dependent capacity. This suggests that climatic influences will strongly affect the year-to-year variations in growth of cod during their early life history owing to their markedly temperature-dependent growth potential. |
format |
Article in Journal/Newspaper |
author |
Folkvord, A |
spellingShingle |
Folkvord, A Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models |
author_facet |
Folkvord, A |
author_sort |
Folkvord, A |
title |
Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models |
title_short |
Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models |
title_full |
Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models |
title_fullStr |
Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models |
title_full_unstemmed |
Comparison of size-at-age of larval Atlantic cod ( Gadus morhua) from different populations based on size- and temperature-dependent growth models |
title_sort |
comparison of size-at-age of larval atlantic cod ( gadus morhua) from different populations based on size- and temperature-dependent growth models |
publisher |
Canadian Science Publishing |
publishDate |
2005 |
url |
http://dx.doi.org/10.1139/f05-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-008 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 62, issue 5, page 1037-1052 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f05-008 |
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Canadian Journal of Fisheries and Aquatic Sciences |
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62 |
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5 |
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1037 |
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1052 |
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1802642048976683008 |