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Tests of size and growth effects on Arctic charr (Salvelinus alpinus) otolith d18 O and d13 C values.

https://arctichealth.org/en/permalink/ahliterature303014
Source
Rapid Commun Mass Spectrom. 2018 Sep 15; 32(17):1557-1564
Publication Type
Journal Article
Date
Sep-15-2018
Author
J Burbank
B Kelly
J Nilsson
M Power
Author Affiliation
Department of Biology, University of Waterloo, 200 University Ave. West, Waterloo, ON, Canada, N2L 3G1.
Source
Rapid Commun Mass Spectrom. 2018 Sep 15; 32(17):1557-1564
Date
Sep-15-2018
Language
English
Publication Type
Journal Article
Keywords
Animals
Arctic Regions
Carbon Isotopes - analysis - metabolism
Ecosystem
Female
Male
Mass Spectrometry
Otolithic Membrane - chemistry - growth & development - metabolism
Oxygen Isotopes - analysis - metabolism
Trout - growth & development - metabolism
Abstract
Otolith d18 O and d13 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 d18 O and d13 C values.
Fifty Arctic charr were raised in identical conditions for two years after which their otoliths were removed and analyzed for their d18 O and d13 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.
The analyses indicated that TGC and size had significant and similar positive non-linear relationships with d13 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 d18 O values. There was no significant correlation between d18 O and d13 C values.
The investigation indicated the presence of linked growth rate and size effects on otolith d13 C values, the nature of which requires further study. Otolith d18 O values were unaffected by individual growth rate and size, confirming the applicability of these values to thermal reconstructions of fish habitat.
PubMed ID
29874707 View in PubMed
Less detail

Tests of size and growth effects on Arctic charr (Salvelinus alpinus) otolith d18 O and d13 C values.

https://arctichealth.org/en/permalink/ahliterature292162
Source
Rapid Commun Mass Spectrom. 2018 Jun 06; :
Publication Type
Journal Article
Date
Jun-06-2018
Author
J Burbank
B Kelly
J Nilsson
M Power
Author Affiliation
Department of Biology, University of Waterloo, 200 University Ave., West Waterloo, ON, Canada, N2L 3G1.
Source
Rapid Commun Mass Spectrom. 2018 Jun 06; :
Date
Jun-06-2018
Language
English
Publication Type
Journal Article
Abstract
Otolith d18 O and d13 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 of fish in freshwater environments exist, here we determine experimentally the potential for related growth rate and size effects on otolith d18 O and d13 C values.
Fifty Arctic charr were raised in identical conditions for two years after which their otoliths were removed and analyzed for their d18 O and d13 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.
The analyses indicated that TGC and size had significant and similar positive non-linear relationships with d13 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 d18 O values. There was no significant correlation between d18 O and d13 C values.
The investigation indicated the presence of linked growth rate and size effects on otolith d13 C values, the nature of which requires further study. Otolith d18 O values were unaffected by individual growth rate and size, confirming the applicability of applying these values to thermal reconstructions of fish habitat.
PubMed ID
29874707 View in PubMed
Less detail

Tests of size and growth effects on Arctic charr (Salvelinus alpinus) otolith d18 O and d13 C values.

https://arctichealth.org/en/permalink/ahliterature303197
Source
Rapid Commun Mass Spectrom. 2018 Sep 15; 32(17):1557-1564
Publication Type
Journal Article
Date
Sep-15-2018
Author
J Burbank
B Kelly
J Nilsson
M Power
Author Affiliation
Department of Biology, University of Waterloo, 200 University Ave. West, Waterloo, ON, Canada, N2L 3G1.
Source
Rapid Commun Mass Spectrom. 2018 Sep 15; 32(17):1557-1564
Date
Sep-15-2018
Language
English
Publication Type
Journal Article
Keywords
Animals
Arctic Regions
Carbon Isotopes - analysis - metabolism
Ecosystem
Female
Male
Mass Spectrometry
Otolithic Membrane - chemistry - growth & development - metabolism
Oxygen Isotopes - analysis - metabolism
Trout - growth & development - metabolism
Abstract
Otolith d18 O and d13 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 d18 O and d13 C values.
Fifty Arctic charr were raised in identical conditions for two years after which their otoliths were removed and analyzed for their d18 O and d13 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.
The analyses indicated that TGC and size had significant and similar positive non-linear relationships with d13 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 d18 O values. There was no significant correlation between d18 O and d13 C values.
The investigation indicated the presence of linked growth rate and size effects on otolith d13 C values, the nature of which requires further study. Otolith d18 O values were unaffected by individual growth rate and size, confirming the applicability of these values to thermal reconstructions of fish habitat.
PubMed ID
29874707 View in PubMed
Less detail