四川裂腹鱼耳石碳、氧稳定同位素特征

doi:10.13287/j.1001-9332.201707.023

应用生态学报 ›› 2017, Vol. 28 ›› Issue (7): 2339-2343.doi: 10.13287/j.1001-9332.201707.023

四川裂腹鱼耳石碳、氧稳定同位素特征

何勇凤, 吴兴兵, 王旭歌, 朱永久, 杨德国^*

中国水产科学研究院长江水产研究所, 农业部淡水生物多样性保护重点实验室, 武汉 430223

收稿日期:2017-02-27 修回日期:2017-05-08 发布日期:2017-07-18
通讯作者: *mail:yangdg@yfi.ac.cn
作者简介:何勇凤,女,1983年生,助理研究员.主要从事鱼类保护生物学研究.E-mail:heyf@yfi.ac.cn
基金资助:
本文由中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金(2016JBF0302)和国家自然科学基金青年基金项目(51609255)资助

Otolith carbon and oxygen stable isotopes in laboratory-reared Schizothorax kozlovi

HE Yong-feng, WU Xing-bing, WANG Xu-ge, ZHU Yong-jiu, YANG De-guo^*

Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China

Received:2017-02-27 Revised:2017-05-08 Published:2017-07-18
Contact: *mail:yangdg@yfi.ac.cn
Supported by:
This work was supported by the Central Public-interest Scientific Institution Basal Research Fund, Chinese Academy of Fishery Sciences (2016JBF0302) and the National Natural Science Foundation of China (51609255).

摘要/Abstract

摘要： 为探讨耳石碳(δ¹³C)、氧(δ¹⁸O)稳定同位素在淡水鱼类群体识别中的作用,本研究以养殖条件下不同年龄组四川裂腹鱼为对象,采用稳定同位素质谱仪进行碳、氧同位素测定,揭示耳石中碳、氧稳定同位素特征,探讨其与环境间的关系. 结果表明:1⁺龄四川裂腹鱼δ¹³C和δ¹⁸O值均与耳石质量无显著相关关系,但在微耳石和星耳石之间存在显著差异;不同年龄四川裂腹鱼微耳石δ¹³C和δ¹⁸O平均值分别为(-9.58±0.06)‰、(-8.33±0.17)‰,其在雌雄个体之间均无显著性差异,但在不同年龄组间存在显著差异. 耳石δ¹⁸O和δ¹³C的关联分析能有效区分四川裂腹鱼不同养殖年龄群体,可作为一种识别淡水鱼类养殖群体的手段.

Abstract: In order to investigate the role of otolith carbon (δ¹³C) and oxygen (δ¹⁸O) stable isotopes in identification of freshwater fish stocks, otolith δ¹³C and δ¹⁸O of cultured Schizothorax kozlovi at different ages were measured by stable isotope mass spectrometer. The relationships between otolith δ¹³C / δ¹⁸O and environment were discussed. The results showed that δ¹³C and δ¹⁸O values of S. kozlovi at age 1⁺ were not significantly correlated with otolith mass, but both were significantly different between lapillus and asteriscus. The average lapillus δ¹³C and δ¹⁸O values of S. kozlovi at different ages were (-9.58±0.06)‰ and (-8.33±0.17)‰, respectively. There was no significant difference of lapillus δ¹³C and δ¹⁸O between the sexes, but with significant difference among diffe-rent ages. The correlation of δ¹³C with δ¹⁸O was an effective method in identification of different culture stocks of S. kozlovi, which indicated the isotopic signatures of otolith could be used as a method to identify freshwater fish stocks.

何勇凤, 吴兴兵, 王旭歌, 朱永久, 杨德国. 四川裂腹鱼耳石碳、氧稳定同位素特征[J]. 应用生态学报, 2017, 28(7): 2339-2343.

HE Yong-feng, WU Xing-bing, WANG Xu-ge, ZHU Yong-jiu, YANG De-guo. Otolith carbon and oxygen stable isotopes in laboratory-reared Schizothorax kozlovi[J]. Chinese Journal of Applied Ecology, 2017, 28(7): 2339-2343.

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四川裂腹鱼耳石碳、氧稳定同位素特征

Otolith carbon and oxygen stable isotopes in laboratory-reared Schizothorax kozlovi

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