Relationships among somatic growth, climate, and fisheries production are poorly understood for coastal fishes in the Gulf of California (GoC), Mexico, but may serve as an adaptive management tool to set precautionary harvest limits for overfished, data-limited stocks. We explored linkages among the Multivariate ENSO Index (MEI), regional sea surface temperatures (SST), otolith growth chronologies of juveniles and adults, and annual landings in the Gulf corvina (Cynoscion othonopterus), an overexploited marine fish that supports the most important coastal finfish fishery in the northern GoC. Both MEI and SST were positively correlated with corvina landings five years later (peak age at capture), indicating that climate conditions at birth were a reliable predictor of future fisheries production. Juvenile growth rate covaried with both MEI and SST, confirming the influence of climate during early life history. There was no significant covariance from year to year in adult growth rate, but there was a significant cohort effect that positively correlated with MEI and SST, suggesting that climate conditions early in life exert lasting impacts that persist through adulthood. Differences in climate–growth relationships between juveniles versus adults were attributed to differences in the geographic distributions of the two life stages. Overall, we conclude that climate variability influences the future harvestable biomass of the corvina fishery via impacts on juvenile growth, and thus survivorship. Systematic monitoring of the corvina population, its fishery, and the biophysical components of the GoC environment must continue to improve our understanding of these climate-driven processes and the management of the fishery.

中文翻译：

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墨西哥加利福尼亚湾过度捕捞的海鱼体细胞生长、气候和渔业产量之间的关系

墨西哥加利福尼亚湾 (GoC) 沿海鱼类的体细胞生长、气候和渔业生产之间的关系知之甚少，但可以作为一种适应性管理工具，为过度捕捞、数据有限的种群设定预防性收获限制。我们探讨了多元 ENSO 指数 (MEI)、区域海面温度 (SST)、幼鱼和成鱼的耳石生长年表以及海湾 corvina ( Cynoscion othonopterus)，一种过度捕捞的海洋鱼类，支撑着 GoC 北部最重要的沿海有鳍鱼类渔业。MEI 和 SST 都与五年后（捕捞高峰年龄）的 corvina 上岸呈正相关，表明出生时的气候条件是未来渔业生产的可靠预测指标。幼年生长率与 MEI 和 SST 共变，证实了早期生活史中气候的影响。成人增长率逐年没有显着协方差，但存在与 MEI 和 SST 正相关的显着队列效应，表明生命早期的气候条件会产生持续到成年的持久影响。青少年与成人之间气候-生长关系的差异归因于两个生命阶段的地理分布差异。总体而言，我们得出的结论是，气候变化通过影响幼鱼的生长和存活率来影响 Corvina 渔业未来的可收获生物量。对 Corvina 种群、其渔业和 GoC 环境的生物物理组成部分的系统监测必须继续提高我们对这些气候驱动过程和渔业管理的理解。