Elemental signature in otolith nuclei for stock discrimination of anadromous tapertail anchovy (Coilia nasus) using laser ablation ICPMS
Elemental signature in otolith nuclei for stock discrimination of anadromous tapertail anchovy (Coilia nasus) using laser ablation ICPMS
复制标题
DOI：
10.1007/s10641-012-0032-3
复制
发表时间：
2012-05
影响因子：
1.4
通讯作者：
Shuozeng Dou;Y. Amano;Xin-Yao Yu;Liang Cao;K. Shirai;T. Otake;K. Tsukamoto
中科院分区：
文献类型：
--
作者：
Shuozeng Dou;Y. Amano;Xin-Yao Yu;Liang Cao;K. Shirai;T. Otake;K. Tsukamoto
采用激光烧蚀电感耦合等离子体质谱（LA-ICPMS）技术，对中国5个河口的凤尾鱼（Coilia nasus）耳石核进行了元素分析。在成鱼耳石核中检测到Na、Mg、K、Sr和Ba五种元素。结果表明，各河口的耳石核中的元素组成差异很大。年龄和鱼长数据显示，对整个采样点的元素浓度比没有显着影响。Sr：Ca和Ba：Ca比值在不同地点间存在差异，可作为区分种群的纳塔尔标记。判别函数分析表明，这些比值可以用于辽河口的判别（LD，92.3%），长江口（CJ，86.7%），黄河口（HH，76.9%），其次是海河口（BH，58.3%）和大沽河口（JZ，46.2%）。判别函数的总体分类准确率为72.7%，表明元素指纹分析似乎有潜力区分这些河口的锥尾鱼种群。
The elemental signature in otolith nuclei was determined using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) for stock discrimination of adult anadromous tapertail anchovy,Coilia nasus, in five Chinese estuaries. Five elements (Na, Mg, K, Sr, and Ba) were well detected in the otolith nuclei of the adult fish. Results showed that the elemental composition in the otolith nuclei varied substantially among the estuaries. Age and fish length data showed no significant influences on the elemental concentration ratios across the sample sites. The Sr:Ca and Ba:Ca ratios were inter-site distinct and could be used as natal tags for discriminating among stocks. Discriminant function analyses (DFA) showed that these ratios can be used in discriminating the Liaohe River estuary (LD, 92.3 %), the Yangtze River estuary (CJ, 86.7 %), and the Yellow River estuary (HH, 76.9 %) samples with high classification accuracy, followed by the Haihe River estuary (BH, 58.3 %) and the Daguhe River estuary (JZ, 46.2 %) samples. An overall classification accuracy rate of 72.7 % from the discriminant functions indicated that elemental fingerprinting appeared to have the potential to discriminate between tapertail anchovy stocks in these estuaries.