Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.)
Abstract Analysis of stable oxygen isotopes in otoliths is a promising technique for estimating the ambient temperature experienced by fish, but consistent equations relating temperature and fractionation of stable oxygen isotopes in otoliths among different fish species are lacking. Juvenile cod we...
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2004
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2003.11.006 http://academic.oup.com/icesjms/article-pdf/61/2/243/29158846/61-2-243.pdf |
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croxfordunivpr:10.1016/j.icesjms.2003.11.006 2024-06-09T07:46:05+00:00 Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) Høie, Hans Otterlei, Erling Folkvord, Arild 2004 http://dx.doi.org/10.1016/j.icesjms.2003.11.006 http://academic.oup.com/icesjms/article-pdf/61/2/243/29158846/61-2-243.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 61, issue 2, page 243-251 ISSN 1095-9289 1054-3139 journal-article 2004 croxfordunivpr https://doi.org/10.1016/j.icesjms.2003.11.006 2024-05-10T13:16:40Z Abstract Analysis of stable oxygen isotopes in otoliths is a promising technique for estimating the ambient temperature experienced by fish, but consistent equations relating temperature and fractionation of stable oxygen isotopes in otoliths among different fish species are lacking. Juvenile cod were reared at constant temperatures from 6 to 20°C and the sagittal otoliths were analysed for oxygen isotope values. We determined that temperature-dependent fractionation of oxygen isotopes in the otoliths was close to that reported for inorganic aragonite at low temperatures, but there were deviations from oxygen isotope fractionation equations for otoliths of other species. The linear relationship between oxygen isotope value in the cod otoliths and temperature was determined to be: 1000 Ln α = 16.75(103 TK−1) − 27.09. Temperature estimates with 1°C precision at the 95% probability level require a sample size of ≥5 otoliths. Only an insignificant amount of the variance in the data was due to variance between left and right otolith, and due to repeated measurements of otolith subsamples. This study confirms that stable isotope values of cod otoliths can give precise and accurate estimates of the ambient temperature experienced by fish. Article in Journal/Newspaper Gadus morhua Oxford University Press ICES Journal of Marine Science 61 2 243 251 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Analysis of stable oxygen isotopes in otoliths is a promising technique for estimating the ambient temperature experienced by fish, but consistent equations relating temperature and fractionation of stable oxygen isotopes in otoliths among different fish species are lacking. Juvenile cod were reared at constant temperatures from 6 to 20°C and the sagittal otoliths were analysed for oxygen isotope values. We determined that temperature-dependent fractionation of oxygen isotopes in the otoliths was close to that reported for inorganic aragonite at low temperatures, but there were deviations from oxygen isotope fractionation equations for otoliths of other species. The linear relationship between oxygen isotope value in the cod otoliths and temperature was determined to be: 1000 Ln α = 16.75(103 TK−1) − 27.09. Temperature estimates with 1°C precision at the 95% probability level require a sample size of ≥5 otoliths. Only an insignificant amount of the variance in the data was due to variance between left and right otolith, and due to repeated measurements of otolith subsamples. This study confirms that stable isotope values of cod otoliths can give precise and accurate estimates of the ambient temperature experienced by fish. |
format |
Article in Journal/Newspaper |
author |
Høie, Hans Otterlei, Erling Folkvord, Arild |
spellingShingle |
Høie, Hans Otterlei, Erling Folkvord, Arild Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) |
author_facet |
Høie, Hans Otterlei, Erling Folkvord, Arild |
author_sort |
Høie, Hans |
title |
Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) |
title_short |
Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) |
title_full |
Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) |
title_fullStr |
Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) |
title_full_unstemmed |
Temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (Gadus morhua L.) |
title_sort |
temperature-dependent fractionation of stable oxygen isotopes in otoliths of juvenile cod (gadus morhua l.) |
publisher |
Oxford University Press (OUP) |
publishDate |
2004 |
url |
http://dx.doi.org/10.1016/j.icesjms.2003.11.006 http://academic.oup.com/icesjms/article-pdf/61/2/243/29158846/61-2-243.pdf |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
ICES Journal of Marine Science volume 61, issue 2, page 243-251 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/j.icesjms.2003.11.006 |
container_title |
ICES Journal of Marine Science |
container_volume |
61 |
container_issue |
2 |
container_start_page |
243 |
op_container_end_page |
251 |
_version_ |
1801375831652564992 |