Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon
Abstract Otoliths are inner‐ear structures of all teleost fish with functional importance for hearing and balance. The otoliths usually consist of aragonite, a polymorph of calcium carbonate, but may also take the form partly or entirely of vaterite, a different polymorph of calcium carbonate. Vater...
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crwiley:10.1111/jfb.14683 2024-04-28T08:13:33+00:00 Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon Austad, Benedikte Vøllestad, L. Asbjørn Foldvik, Anders 2021 http://dx.doi.org/10.1111/jfb.14683 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14683 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14683 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Journal of Fish Biology volume 98, issue 5, page 1401-1409 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2021 crwiley https://doi.org/10.1111/jfb.14683 2024-04-02T08:39:42Z Abstract Otoliths are inner‐ear structures of all teleost fish with functional importance for hearing and balance. The otoliths usually consist of aragonite, a polymorph of calcium carbonate, but may also take the form partly or entirely of vaterite, a different polymorph of calcium carbonate. Vateritic otoliths occur sporadically in wild fish, but with a higher frequency in hatchery‐reared fish. Abnormal otoliths have direct consequences for the inner‐ear functions of fish and may be a symptom of environmental stress. In this study, the authors assess the differences in the frequency of abnormal otoliths and degree of abnormality (% vaterite) for different groups of hatchery‐reared Atlantic salmon ( Salmo salar) smolt and adults. The groups differed in parental broodstock origin (number of generations in hatchery) and treatment temperature. Smolt from the same groups were also released to complete their ocean migration. The otoliths of the returning and recaptured adults were subsequently extracted to assess the difference in frequency and degree of abnormality between the adults and the smolt from corresponding groups. Return rate varied among groups (0.2%–2.6%). The frequency of vateritic otoliths was high (11.4%–64.4%) and differed among smolt groups. The lowest return rates corresponded with the highest frequency of abnormal otoliths for the groups, suggesting that abnormal otoliths may have negative consequences for marine survival. Furthermore, indications of an effect of fast growth on the formation of abnormal otoliths were found for only one of the experimental groups, and for none of the groups after correcting for Type 1 error. This contradicts previous reports, suggesting rapid growth as the main cause of abnormal otoliths. Adult return rates were generally low, but abnormal otoliths were common, with high coverage (% vaterite). Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 98 5 1401 1409 |
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Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
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Aquatic Science Ecology, Evolution, Behavior and Systematics Austad, Benedikte Vøllestad, L. Asbjørn Foldvik, Anders Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Otoliths are inner‐ear structures of all teleost fish with functional importance for hearing and balance. The otoliths usually consist of aragonite, a polymorph of calcium carbonate, but may also take the form partly or entirely of vaterite, a different polymorph of calcium carbonate. Vateritic otoliths occur sporadically in wild fish, but with a higher frequency in hatchery‐reared fish. Abnormal otoliths have direct consequences for the inner‐ear functions of fish and may be a symptom of environmental stress. In this study, the authors assess the differences in the frequency of abnormal otoliths and degree of abnormality (% vaterite) for different groups of hatchery‐reared Atlantic salmon ( Salmo salar) smolt and adults. The groups differed in parental broodstock origin (number of generations in hatchery) and treatment temperature. Smolt from the same groups were also released to complete their ocean migration. The otoliths of the returning and recaptured adults were subsequently extracted to assess the difference in frequency and degree of abnormality between the adults and the smolt from corresponding groups. Return rate varied among groups (0.2%–2.6%). The frequency of vateritic otoliths was high (11.4%–64.4%) and differed among smolt groups. The lowest return rates corresponded with the highest frequency of abnormal otoliths for the groups, suggesting that abnormal otoliths may have negative consequences for marine survival. Furthermore, indications of an effect of fast growth on the formation of abnormal otoliths were found for only one of the experimental groups, and for none of the groups after correcting for Type 1 error. This contradicts previous reports, suggesting rapid growth as the main cause of abnormal otoliths. Adult return rates were generally low, but abnormal otoliths were common, with high coverage (% vaterite). |
format |
Article in Journal/Newspaper |
author |
Austad, Benedikte Vøllestad, L. Asbjørn Foldvik, Anders |
author_facet |
Austad, Benedikte Vøllestad, L. Asbjørn Foldvik, Anders |
author_sort |
Austad, Benedikte |
title |
Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon |
title_short |
Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon |
title_full |
Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon |
title_fullStr |
Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon |
title_full_unstemmed |
Frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared Atlantic salmon |
title_sort |
frequency of vateritic otoliths and potential consequences for marine survival in hatchery‐reared atlantic salmon |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/jfb.14683 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14683 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14683 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 98, issue 5, page 1401-1409 ISSN 0022-1112 1095-8649 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1111/jfb.14683 |
container_title |
Journal of Fish Biology |
container_volume |
98 |
container_issue |
5 |
container_start_page |
1401 |
op_container_end_page |
1409 |
_version_ |
1797580013695926272 |