Temporal stability in the otolith Sr:Ca ratio of the yellow croaker, Larimichthys polyactis (Actinopterygii, Perciformes, Sciaenidae), from the southern Yellow Sea
Temporal stability in the otolith Sr:Ca ratio of the yellow croaker, Larimichthys polyactis (Actinopterygii, Perciformes, Sciaenidae), from the southern Yellow Sea
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南黄海黄鱼 (Actinopterygii, Perciformes, Sciaenidae) 耳石 Sr:Ca 比率的时间稳定性
DOI：
10.3897/aiep.51.63245
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发表时间：
2021-03
影响因子：
1
通讯作者：
Xiaming Zhong
中科院分区：
文献类型：
--
作者：
Ying Xiong;Jian Yang;Tao Jiang;Hongbo Liu;Xiaming Zhong
随着时间的推移，耳石的化学特征足够稳定，可以进行准确的分类。Larimichthys polyactis （Bleeker, 1877）南黄海种群的分类及其与1962年以来其他种群的连通性存在争议。本研究旨在研究聚乳酸耳石锶钙（Sr:Ca）比值的年际变化，以确定耳石天然标签是否具有长期代表性，并可用于种群结构分类。2003年、2012年和2013年4 - 5月，在黄海南部沿海同一地点用堆网捕获了产卵的多钩鲳。采用电子探针微量分析（EPMA）法测定了25个耳石样品的Sr:Ca比值。采用Mann-Whitney u检验检验各耳石从核心到边缘的Sr:Ca比值的差异。采用单因素方差分析比较2003年、2012年和2013年耳石Sr:Ca平均值。2003年、2012年和2013年的耳石Sr:Ca比值分布规律相似，岩心和剩余区域的耳石Sr:Ca比值分别为高相和低相态。在短期（2012年至2013年）或长期（2003年至2012年和2003年至2013年）尺度上，耳石各高、低Sr:Ca相的年际差异均不显著。相邻年份和十年的单变量对比在统计上是相似的。耳石中Sr:Ca比值特征在多年间相对稳定，可作为一种可靠的天然标记，用于连通性评估和种群鉴定，在多聚l.s群体之间很少或没有遗传分化。耳石Sr:Ca比值的短期和长期稳定性也表明，黄海南部存在稳定的多聚l.s种群，这与先前捕获调查的结果一致。
Otolith chemical signatures are sufficiently stable across time to allow for accurate stock classification. The classification of the southern Yellow Sea population for Larimichthys polyactis (Bleeker, 1877) and its connectivity with others from 1962 is controversial. The study aimed to study the inter-annual variation in otolith strontium:calcium (Sr:Ca) ratios of L. polyactis to determine whether otolith natural tags are representative over long periods and can then be used for population structure classification. Spawning L. polyactis individuals were captured by stow nets in the same site of the southern Yellow Sea coastal waters during April–May in 2003, 2012, and 2013. EPMA (electron probe microanalysis) was used to determine the Sr:Ca ratios of a total of 25 otolith samples. Mann–Whitney U-test was used to test the differences of otolith Sr:Ca ratios from the core to edge for each otolith. One-way ANOVA was performed to compare the mean otolith Sr:Ca values among 2003, 2012, and 2013. Otoliths from 2003, 2012, and 2013 showed similar patterns of Sr:Ca ratios and Sr:Ca ratios could be divided into higher and lower phases in the core and remaining regions, respectively. Inter-annual significant differences for each high or low Sr:Ca phase of otoliths were not observed over short(between 2012 and 2013) or long-time (between 2003 and 2012, and between 2003 and 2013) scales. Univariate contrasts across the adjacent year and decade classes were statistically similar. The Sr:Ca ratio signatures in the otolith were relatively stable across years and can be used as a reliable natural tag for connectivity assessments and stock identification with little or no genetic differentiation among L. polyactis populations. The shortand long-term temporal stability of otolith Sr:Ca ratios also revealed, the existence of stable L. polyactis stocks in the southern Yellow Sea, consistent with a previous finding of capture survey.
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影响因子：
2.4
作者：
S. Thorrold;S. Shuttleworth
通讯作者：
S. Thorrold;S. Shuttleworth
影响因子：
1.2
作者：
Jian Yang;T. Jiang;Hongbo Liu
通讯作者：
Jian Yang;T. Jiang;Hongbo Liu
影响因子：
--
作者：
Xingang Lü;F. Qiao;Changshui Xia;Jianrong Zhu;Yeli Yuan
通讯作者：
Xingang Lü;F. Qiao;Changshui Xia;Jianrong Zhu;Yeli Yuan
影响因子：
2.4
作者：
D'Avignon, Genevieve;Rose, George A.
通讯作者：
Rose, George A.
影响因子：
--
作者：
Dai Fang-qun
通讯作者：
Dai Fang-qun