Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta
Abstract In this study, individual growth of juvenile offspring of anadromous and freshwater resident brown trout Salmo trutta and crosses between the two from the River Imsa, Norway, was estimated. The juveniles were incubated until hatching at two temperatures (± S.D. ), either 4.4 ± 1.5°C or 7.1...
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crwiley:10.1111/jfb.14693 2024-09-15T17:56:26+00:00 Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta Jonsson, Bror Jonsson, Nina 2021 http://dx.doi.org/10.1111/jfb.14693 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14693 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14693 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Journal of Fish Biology volume 99, issue 1, page 18-24 ISSN 0022-1112 1095-8649 journal-article 2021 crwiley https://doi.org/10.1111/jfb.14693 2024-08-27T04:27:13Z Abstract In this study, individual growth of juvenile offspring of anadromous and freshwater resident brown trout Salmo trutta and crosses between the two from the River Imsa, Norway, was estimated. The juveniles were incubated until hatching at two temperatures (± S.D. ), either 4.4 ± 1.5°C or 7.1 ± 0.6°C. Growth rate was estimated for 22 days in August–September when the fish on average were c . 8 g in wet mass, and the estimates were standardized to 1 g fish dry mass. Offspring of anadromous S. trutta grew better at both 15 and 18°C than offspring of freshwater resident S. trutta or offspring of crosses between the two S. trutta types. This difference appears not to result from a maternal effect because anadromous S. trutta grew better than the hybrids with anadromous mothers. Instead, this appears to be an inherited difference between the anadromous and the freshwater resident fish lending support to the hypothesis that anadromous and freshwater resident S. trutta in this river differ in genetic expression. Egg incubation temperature of S. trutta appeared not to influence the later growth as reported earlier from the studies of Atlantic salmon Salmo salar . Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 99 1 18 24 |
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Wiley Online Library |
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English |
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Abstract In this study, individual growth of juvenile offspring of anadromous and freshwater resident brown trout Salmo trutta and crosses between the two from the River Imsa, Norway, was estimated. The juveniles were incubated until hatching at two temperatures (± S.D. ), either 4.4 ± 1.5°C or 7.1 ± 0.6°C. Growth rate was estimated for 22 days in August–September when the fish on average were c . 8 g in wet mass, and the estimates were standardized to 1 g fish dry mass. Offspring of anadromous S. trutta grew better at both 15 and 18°C than offspring of freshwater resident S. trutta or offspring of crosses between the two S. trutta types. This difference appears not to result from a maternal effect because anadromous S. trutta grew better than the hybrids with anadromous mothers. Instead, this appears to be an inherited difference between the anadromous and the freshwater resident fish lending support to the hypothesis that anadromous and freshwater resident S. trutta in this river differ in genetic expression. Egg incubation temperature of S. trutta appeared not to influence the later growth as reported earlier from the studies of Atlantic salmon Salmo salar . |
format |
Article in Journal/Newspaper |
author |
Jonsson, Bror Jonsson, Nina |
spellingShingle |
Jonsson, Bror Jonsson, Nina Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta |
author_facet |
Jonsson, Bror Jonsson, Nina |
author_sort |
Jonsson, Bror |
title |
Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta |
title_short |
Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta |
title_full |
Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta |
title_fullStr |
Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta |
title_full_unstemmed |
Differences in growth between offspring of anadromous and freshwater brown trout Salmo trutta |
title_sort |
differences in growth between offspring of anadromous and freshwater brown trout salmo trutta |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/jfb.14693 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14693 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14693 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 99, issue 1, page 18-24 ISSN 0022-1112 1095-8649 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/jfb.14693 |
container_title |
Journal of Fish Biology |
container_volume |
99 |
container_issue |
1 |
container_start_page |
18 |
op_container_end_page |
24 |
_version_ |
1810432635827126272 |