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Nonlethal sampling for stable isotope analysis of juvenile Chinese sturgeon (Acipenser sinensis): Comparing C-13 and N-15 signatures in muscle and fin tissues

文献类型： 外文期刊

作者： Wang, S. K. 1 ; Xu, C. 1 ; Wang, Y. 1 ; Yang, G. 1 ; Zhang, T. T. 1 ; Zhao, F. 1 ; Zhuang, P. 1 ;

作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab Fisheries Ecol Yangtze Estuary, Shanghai, Peoples R China

2.Nanjing Agr Univ, Wuxi Fisheries Coll, Nanjing, Jiangsu, Peoples R China

关键词： Chinese sturgeon;fin tissue;lipid extraction;muscle tissue;size;stable isotope

期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.892； 五年影响因子：0.956 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： We compared C-13 and N-15 values of muscle with fin from juvenile Chinese sturgeon (Acipenser sinensis), to evaluate the feasibility of using nonlethal (fin) as an alternative to lethal (muscle) sampling. Size and lipid effect on the relationship between fin and muscle were also investigated. Dorsal muscle (DM) and fin clip (FC) were collected from A.sinensis with different body length (120-373mm) in the Yangtze Estuary for isotope analysis. The result showed that (1) muscle isotope values could estimated by the values of fin, from either use the regression model (C-13(DM)=0.939xFC-2.577; N-15(DM)=0.737xFC+4.638) or constants factors (C-13(DM)=C-13(FC)-1.27; N-15(DM)=N-15(FC)+0.59); (2) no size-based relationships with C-13 and N-15 from either fin or muscle; (3) lipid extraction significantly improving the fin and muscle regression model fit for both C-13 and N-15 values. Therefore, this study support the use of nonlethal fin tissues for isotope analysis of juvenile A.sinensis, and will allow trophic studies to avoid the effect of lipid accumulation from muscle.

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