期刊
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
卷 54, 期 2, 页码 196-208出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10256016.2017.1391242
关键词
Carbon-13; nitrogen-15; caudal fin; muscle; liver; preservation
资金
- NSERC PGS-M
- NSERC OGS
- W. Garfield Weston Foundation
- NSERC
- UWindsor Research Grant for Women
Stable isotope ecology typically involves sacrificing the animal to obtain tissues. However, with threatened species or in long-term longitudinal studies, non-lethal sampling techniques should be used. The objectives of this study were to (1) determine if caudal fin tissue could be used as a non-lethal proxy to liver and muscle for stable isotope analysis, and (2) assess the effects of ethanol preservation on N-15 and C-13 in fin tissue of juvenile yellow perch Perca flavescens. The C-13 of caudal fin was not significantly different from liver (t(23)=-0.58; p=0.57), and was more correlated with N-15 in liver (r(2)=0.78) than muscle (r(2)=0.56). Ethanol preservation enriched N-15 and C-13 for caudal fins, but by using our developed regression models, these changes in N-15 and C-13 can now be corrected. Overall, caudal fin tissue is a more reliable proxy to liver than muscle for N-15 and C-13 in yellow perch.
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