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首页> 外文期刊>Journal of oceanography >Stock Identification of Chum Salmon (Oncorhynchus keta) Using Trace Elements in Otoliths
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Stock Identification of Chum Salmon (Oncorhynchus keta) Using Trace Elements in Otoliths

机译：利用耳石中的微量元素鉴定大头鲑（Oncorhynchus keta）的种群

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The relationship between trace elements in chum salmon otoliths and in their rearing water was investigated to develop ways to distinguish chum salmon stocks in Korea. Rearing water and otoliths of hatchery-reared chum salmon fry were collected from three major hatcheries (Yangyang, Samchuk, and Uljin) on the east coast of Korea in spring 2001 and 2002. Trace elements in the otoliths and rearing water were analyzed using inductively coupled plasma mass spectrometry (ICP-MS) at the Korea Basic Science Institute. The chemical composition of rearing water and otoliths of the salmon fry at specific sites did not vary significantly through the study period. The ratios of some trace elements to Ca in rearing water, such as Sr/Ca and Ba/Ca, was clearly reflected in the chemical composition of otoliths, although the absolute concentrations were different. These two elements may be useful in distinguishing between salmon hatcheries, which have different chemical environments. Discriminant analysis with the ratios of eight elements to Ca (Na/Ca, Mg/Ca, Al/Ca, Cu/Ca, Sr/Ca, Ba/ Ca, Mn/Ca, and Zn/Ca) revealed a distinct separation of natal area in stocks. The analysis of otolith chemistry may be an effective technique for identifying the origins of wild salmon caught at sea.
机译：研究了密宗鲑鱼耳石中的微量元素与饲养水中微量元素之间的关系，以开发出区分韩国密宗鲑鱼种群的方法。 2001年春季和2002年春季，从韩国东海岸的三个主要孵化场（养阳，三清和蔚津）采集了孵化场鲑鱼苗的饲养水和耳石。使用电感耦合技术分析了耳石和饲养水中的微量元素。韩国基础科学研究所的等离子质谱（ICP-MS）。在整个研究期间，特定地点的鲑鱼苗饲养水和耳石的化学成分没有显着变化。尽管绝对浓度不同，但抚养水中的某些微量元素与Ca的比例（如Sr / Ca和Ba / Ca）清楚地反映在耳石的化学成分中。这两个元素可能有助于区分化学环境不同的鲑鱼孵化场。判别分析以八种元素与钙的比率（Na / Ca，Mg / Ca，Al / Ca，Cu / Ca，Sr / Ca，Ba / Ca，Mn / Ca和Zn / Ca）进行区分库存区域。耳石化学分析可能是鉴定海上捕获的野生鲑鱼起源的有效技术。

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