Application of laser ablation ICPMS to trace the environmental history of chum salmon Oncorhynchus keta
Application of laser ablation ICPMS to trace the environmental history of chum salmon Oncorhynchus keta
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DOI：
10.1016/j.marenvres.2006.06.003
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发表时间：
2007-02-01
影响因子：
3.3
通讯作者：
Takagi, Yasuaki
中科院分区：
文献类型：
--
作者：
Arai, Takaomi;Hirata, Takafumi;Takagi, Yasuaki
采用激光消融电感耦合等离子体质谱(LA-ICPMS)对鲑鱼耳石中的微量元素进行了测定。电子探针X射线分析与LA-ICPMS分析的锶/钙比值之间存在密切的线性关系(p<；0.0001)，表明后者可用于区分海洋和淡水生命阶段。无论是核心区还是大洋生长带，耳石的镁：钙、铬：钙、锌：钙、钡/钙比值因地点而异。这些差异表明，元素组成可能反映了产卵(繁殖)或栖息地之间的环境差异。因此，这些元素比率表明有可能被用来区分这种鲑鱼的产卵(繁殖)地点和栖息地。(C)2006爱思唯尔有限公司。保留所有权利。
Trace element levels in otoliths of chum salmon Oncorhynchus keta were examined by means of laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). A close linear relationship in the Sr:Ca ratios between EPMA (X-ray analysis with an electron microprobe) and LA-ICPMS analyses was found (p < 0.0001), suggesting that the latter technique could be used to separate the marine and freshwater life phases. Mg:Ca, Cr:Ca, Zn:Ca and Ba:Ca ratios in either the core region or the oceanic growth zone of the otoliths varied among sites. These differences suggest that elemental compositions may reflect environmental variability among spawning (breeding) or habitat sites. Thus, those element ratios demonstrate the potential to be used to distinguish between fish spawning (breeding) sites and habitats for this species of salmon. (c) 2006 Elsevier Ltd. All rights reserved.