Testing assumptions underlying cabezon ( Scorpaenichthys marmoratus ) otolith microstructure analysis using wild‐caught juveniles and opportunistic rearing of eggs and larvae
Testing assumptions underlying cabezon ( Scorpaenichthys marmoratus ) otolith microstructure analysis using wild‐caught juveniles and opportunistic rearing of eggs and larvae
复制标题
使用野生捕获的幼鱼以及卵和幼虫的机会性饲养来测试卡贝松（Scorpaenichthys marmoratus）耳石微观结构分析的假设
DOI：
10.1111/jfb.15364
复制
发表时间：
2023
影响因子：
2
通讯作者：
Grorud‐Colvert, Kirsten
中科院分区：
文献类型：
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作者：
Wilson, Megan;Sponaugle, Su;Grorud‐Colvert, Kirsten
耳石微结构分析为鱼类早期生活史提供了重要的生物学和生态学信息。这些信息对于解释和预测具有社会经济重要性的渔业物种的种群动态特别重要;尽管如此，仍有几个关键假设支持耳石技术的使用。作者验证了对cabezon（Scorpaenichthys marmoratus; Ayres，1854）的这种分析的使用，cabezon是从墨西哥下加利福尼亚到美国阿拉斯加的近岸渔业中的一种长寿、大型的鳕鱼组成部分。为了检验三个关键假设，作者将来自卡贝松卵和幼虫的机会性饲养研究的耳石和形态测量分析与幼卡贝松野外采集的长期时间序列相结合。作者证实了实验室饲养的幼虫每日耳石增量沉积，确定了第一次耳石增量沉积的时间，并检查了野外采集的幼鱼耳石生长与体细胞生长之间的关系，验证了耳石显微结构分析在该物种早期生活史特征的生物学和生态学解释中的应用。这项研究的结果还表明，卵黄囊储备的吸收，以及可能过渡到外源性喂养，在调节耳石增量沉积中起着重要作用。最后，作者发现了幼鱼大小的年龄变化，这可能是幼鱼在猎物有限环境中的优势。
Otolith microstructure analysis provides critical biological and ecological information about the early life history of fishes. This information is particularly important to interpret and predict population dynamics for socio‐economically important fisheries species; nonetheless, several key assumptions underpin the use of otolith techniques. The authors validated the use of this analysis for cabezon (Scorpaenichthys marmoratus; Ayres, 1854), a long‐lived, large‐bodied cottid constituent of nearshore fisheries from Baja California, Mexico, to Alaska, USA. To test three critical assumptions, the authors coupled otolith and morphometric analyses from an opportunistic rearing study of cabezon eggs and larvae with a long‐term time series of juvenile cabezon field collections. The authors confirmed the daily otolith increment deposition in laboratory‐reared larvae, identified the timing of first otolith increment deposition and examined the relationship between otolith growth and somatic growth in field‐collected juveniles, validating the use of otolith microstructure analysis in biological and ecological interpretations of early life‐history traits for this species. The findings of this study also indicated that the absorption of yolk‐sac reserves, and likely the transition to exogenous feeding, plays an important role in regulating otolith increment deposition. Finally, the authors found within‐brood size‐at‐age variation, which may be an advantage for young fish in prey‐limited environments.