阿根廷滑柔鱼耳石核心与边缘元素的比较
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陈昭凯(1999-),男,硕士,研究方向为头足类繁殖生物学.E-mail:2629479928@qq.com

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S931

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国家自然科学基金项目(41876144); 上海市人才发展资金项目(2020107); 上海市自然科学基金资助项目(16ZR1415400)


A comparative study on elements in the statolith core and edge of Illex argentinus
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    摘要:

    生物体硬组织中的元素是重构其生活史过程和栖息环境的重要自然标记物。为探究阿根廷滑柔鱼(Illex argentinus)耳石核心与边缘元素的时空变化, 本研究利用 LA-ICP-MS 法测定其耳石核心和边缘的元素含量, 计算分析 Sr、Ba、Mg 和 Mn 与 Ca 的比值, 并利用混合模型分析这 4 种元素与 Ca 的比值在耳石边缘与核心之间的关系。结果显示, 耳石核心和边缘的 Ba/Ca 值均存在雌雄差异, 且耳石核心的 Ba/Ca 值存在显著的孵化月份差异, 而雄性个体耳石边缘的 Ba/Ca 值在不同采样月份间差异显著; 耳石核心的 Sr/Ca 值和边缘的 Ba/Ca 值在不同采样站点纬度重心之间差异显著(P<0.05)。耳石核心的 Sr/Ca、Ba/Ca 和 Mg/Ca 值显著高于耳石边缘的对应元素比值, 而 Mn/Ca 值在耳石核心与边缘之间没有显著差异(P>0.05)。混合模型结果显示, 雌性个体耳石边缘的元素比值与耳石核心对应元素比值之间没有效应关系, 而雄性个体耳石边缘的 Ba/Ca 和 Mn/Ca 值均随着耳石核心的 Ba/Ca 和 Mn/Ca 值增大而增大。研究表明, 阿根廷滑柔鱼耳石核心与边缘之间的 Sr、Ba 和 Mg 元素存在差异, 且 Ba 元素的差异存在雌雄特殊性。本研究为进一步揭示阿根廷滑柔鱼生活史的环境选择适应性及掌握该种类资源变动规律提供了基础数据。

    Abstract:

    The elements in the hard tissues of organisms are important natural markers for reconstructing their life history and habitat. The present study aimed to explore the changes in the elements present inside the statolith core and edge of Argentine shortfin squid (Illex argentinus) by using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The element content was determined in the core and edge of statoliths, and the ratios of Sr, Ba, Mg, Mn to Ca were analyzed. Thereafter, mixed-effects models were used to analyze the relationship between these four elements and Ca ratios in the edge and core of statoliths. Ba/Ca values were found significant differences in the core of statoliths between female and male individuals, so did in the edge of statoliths. Significant differences were also observed in the Ba/Ca values of statolith core among different hatching months. Additionally, in male individuals, the Ba/Ca values in the statolith edge exhibited notable variations across different sampling months. The Sr/Ca values in the core of statoliths and the Ba/Ca values in the edge showed significant differences between different sampling latitudinal centroids. The Sr/Ca, Ba/Ca, and Mg/Ca values in the core of statoliths were significantly higher than the corresponding element ratios in the edge, while no significant difference was observed in the Mn/Ca values between the core and edge of statoliths. The results of the mixed-effects model showed that there was no relationship between the element ratios in the edge of statoliths and the corresponding element ratios in the core for females, whereas the Ba/Ca and Mn/Ca values in the edge of statoliths increased with the increasing Ba/Ca and Mn/Ca values in the core for males. These findings suggest notable variations in Sr, Ba, and Mg elements between the core and edge of I. argentinus statoliths. Additionally, they highlight sex-specific differences, specifically in the Ba element. This study provides a basis for further revealing the environmental selection adaptability and life history of I. argentinus and can provide data reference for mastering the species resource fluctuations.

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引用本文

陈昭凯,林东明.阿根廷滑柔鱼耳石核心与边缘元素的比较[J].中国水产科学,2023,30(11):1348-1363
CHEN Zhaokai, LIN Dongming. A comparative study on elements in the statolith core and edge of Illex argentinus[J]. Journal of Fishery Sciences of China,2023,30(11):1348-1363

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  • 收稿日期:2023-10-16
  • 最后修改日期:2023-11-18
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  • 在线发布日期: 2024-03-14
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