【作者】 张翼； 姜亚洲； 张辉； 李圣法； 程家骅；

【Author】 ZHANG Yi;JIANG Yazhou;ZHANG Hui;LI Shengfa;CHENG Jiahua;East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;

【机构】 农业部东海与远洋渔业资源开发利用重点实验室东海水产研究所中国水产科学研究院；

【摘要】 本研究以2014年象山港水域采集到的黑鲷样本为对象,利用激光剥蚀电感等离子质谱法(LA-ICP-MS),分析了181尾黑鲷耳石不同部位Sr、Mg元素的组成及其分布特征。结果表明:Sr含量在黑鲷耳石矢状面上呈均匀分布,耳石核心至边缘Sr/Ca比值稳定在2.2±0.18。Mg含量在黑鲷耳石矢状面上的分布有两种类型,Ⅰ型耳石为核心高镁型,核心Mg/Ca比值范围为0.7-1.2;Ⅱ型耳石为核心低镁型,核心Mg/Ca比值范围为0.2-0.4。I型黑鲷比例为83.98%,Ⅱ型黑鲷为13.26%。Ⅰ型黑鲷耳石从核心到边缘Mg/Ca比值逐渐减小,至次生核位置趋于稳定。Mg元素可选作为区分野生与养殖黑鲷的关键指示元素。更多还原

【Abstract】 Weanalyzed otolith microchemistry of 181 Sparusmacrocephlusfrom xiangshan harbor in 2014. The LA-ICP-MS technique was used to analyze the element Sr and Mg abundance in otolith. The results indicate that :(1) the Sr abundance present uniform distribution from the core to the edge of the otolith, the Sr/Ca value was about 2.2±0.18;(2) But the Mg abundance appeared two patterns, the first pattern otolith we namedⅠ-pattern comes a high Mg abundance core, the Mg/Ca value ranges about 0.7~1.2. The second one we named Ⅱ-pattern do not show up the Mg/Ca peak, it is about 0.2~0.4. TheⅠ-pattern otoliths account for 83.98%, the Ⅱ-pattern otoliths were about 13.26%. The Mg abundance decreased from the core to the edge of theⅠ-pattern otoliths, but stabilized around the secondary nucleus. We suppose that the Mg would be the key element chose to distinguish the wild and the aquaculture Sparusmacrocephlus.更多还原