Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values
Rationale Otolith δ 18 O and δ 13 C values have been used extensively to reconstruct thermal and diet histories. Researchers have suggested that individual growth rate and size may have an effect on otolith isotope ratios and subsequently confound otolith‐based thermal and diet reconstructions. As f...
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crwiley:10.1002/rcm.8198 2024-06-02T08:00:05+00:00 Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values Burbank, J. Kelly, B. Nilsson, J. Power, M. Sveriges Lantbruksuniversitet 2018 http://dx.doi.org/10.1002/rcm.8198 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.8198 http://onlinelibrary.wiley.com/wol1/doi/10.1002/rcm.8198/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Rapid Communications in Mass Spectrometry volume 32, issue 17, page 1557-1564 ISSN 0951-4198 1097-0231 journal-article 2018 crwiley https://doi.org/10.1002/rcm.8198 2024-05-03T11:42:19Z Rationale Otolith δ 18 O and δ 13 C values have been used extensively to reconstruct thermal and diet histories. Researchers have suggested that individual growth rate and size may have an effect on otolith isotope ratios and subsequently confound otolith‐based thermal and diet reconstructions. As few explicit tests of the effect on fish in freshwater environments exist, here we determine experimentally the potential for related growth rate and size effects on otolith δ 18 O and δ 13 C values. Methods Fifty Arctic charr were raised in identical conditions for two years after which their otoliths were removed and analyzed for their δ 18 O and δ 13 C values. The potential effects of final length and the Thermal Growth Coefficient (TGC) on otolith isotope ratios were tested using correlation and regression analysis to determine if significant effects were present and to quantify effects when present. Results The analyses indicated that TGC and size had significant and similar positive non‐linear relationships with δ 13 C values and explained 35% and 42% of the variability, respectively. Conversely, both TGC and size were found to have no significant correlation with otolith δ 18 O values. There was no significant correlation between δ 18 O and δ 13 C values. Conclusions The investigation indicated the presence of linked growth rate and size effects on otolith δ 13 C values, the nature of which requires further study. Otolith δ 18 O values were unaffected by individual growth rate and size, confirming the applicability of these values to thermal reconstructions of fish habitat. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Wiley Online Library Arctic Rapid Communications in Mass Spectrometry 32 17 1557 1564 |
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Wiley Online Library |
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English |
description |
Rationale Otolith δ 18 O and δ 13 C values have been used extensively to reconstruct thermal and diet histories. Researchers have suggested that individual growth rate and size may have an effect on otolith isotope ratios and subsequently confound otolith‐based thermal and diet reconstructions. As few explicit tests of the effect on fish in freshwater environments exist, here we determine experimentally the potential for related growth rate and size effects on otolith δ 18 O and δ 13 C values. Methods Fifty Arctic charr were raised in identical conditions for two years after which their otoliths were removed and analyzed for their δ 18 O and δ 13 C values. The potential effects of final length and the Thermal Growth Coefficient (TGC) on otolith isotope ratios were tested using correlation and regression analysis to determine if significant effects were present and to quantify effects when present. Results The analyses indicated that TGC and size had significant and similar positive non‐linear relationships with δ 13 C values and explained 35% and 42% of the variability, respectively. Conversely, both TGC and size were found to have no significant correlation with otolith δ 18 O values. There was no significant correlation between δ 18 O and δ 13 C values. Conclusions The investigation indicated the presence of linked growth rate and size effects on otolith δ 13 C values, the nature of which requires further study. Otolith δ 18 O values were unaffected by individual growth rate and size, confirming the applicability of these values to thermal reconstructions of fish habitat. |
author2 |
Sveriges Lantbruksuniversitet |
format |
Article in Journal/Newspaper |
author |
Burbank, J. Kelly, B. Nilsson, J. Power, M. |
spellingShingle |
Burbank, J. Kelly, B. Nilsson, J. Power, M. Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values |
author_facet |
Burbank, J. Kelly, B. Nilsson, J. Power, M. |
author_sort |
Burbank, J. |
title |
Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values |
title_short |
Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values |
title_full |
Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values |
title_fullStr |
Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values |
title_full_unstemmed |
Tests of size and growth effects on Arctic charr ( Salvelinus alpinus) otolith δ 18 O and δ 13 C values |
title_sort |
tests of size and growth effects on arctic charr ( salvelinus alpinus) otolith δ 18 o and δ 13 c values |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/rcm.8198 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.8198 http://onlinelibrary.wiley.com/wol1/doi/10.1002/rcm.8198/fullpdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Rapid Communications in Mass Spectrometry volume 32, issue 17, page 1557-1564 ISSN 0951-4198 1097-0231 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rcm.8198 |
container_title |
Rapid Communications in Mass Spectrometry |
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32 |
container_issue |
17 |
container_start_page |
1557 |
op_container_end_page |
1564 |
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1800744106809360384 |