As a growing number of aquatic organisms become imperiled due to anthropogenic and environmental threats, there is an increasing need to implement captive propagation programs to conserve some species. These captive propagation programs can aid in the recovery of species, such as for Sockeye Salmon Oncorhynchus nerka, by providing individuals that can be used to supplement wild populations. The Snake River Sockeye Salmon Captive Broodstock Program implemented a comprehensive monitoring and evaluation plan to evaluate adult recruitment using three juvenile release strategies from excess eggs of captive females. Hatchery‐produced eyed eggs, presmolts, and smolts were released into the upper Salmon River basin to increase the abundance of individuals expressing an anadromous life history as a way to support population augmentation. A mixed‐effects logistic regression model used to evaluate egg‐to‐adult returns between release strategies indicated that release strategies differed from one another. Full‐term smolt production was observed to produce the highest recruitment among the release strategies and has become the focus of recovery efforts involving juvenile releases. The estimated odds of a fish (egg) returning as an adult were 9.7 times greater for smolts reared at the Oxbow Fish Hatchery and 3.6 times greater for smolts reared at the Sawtooth Fish Hatchery relative to eggs that were hatchery reared and released as presmolts or placed into in‐lake incubator boxes. The variation observed in productivity and in expression of life history traits among release strategies indicates that juvenile releases are not one size fits all, and we recommend undertaking a similar assessment to match observed outcomes with desired objectives when initiating supplementation programs.

中文翻译：

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评价人工繁殖释放策略以恢复濒临灭绝的蛇河红鲑鱼

随着越来越多的水生生物由于人为和环境威胁而受到破坏，越来越需要实施圈养繁殖计划以保护某些物种。这些圈养繁殖程序可以帮助物种恢复，例如红鲑鱼Oncorhynchus nerka，通过提供可用于补充野生种群的个体。蛇河红鲑鲑圈养亲鱼计划实施了一项全面的监测和评估计划，使用三种从圈养雌性卵中过量卵中释放的少年来评估成年。孵化场生产的有眼卵，前软体动物和软体动物被释放到鲑鱼河上游流域，以增加表达异常生活史的个体的数量，以此作为增加种群的一种方式。用于评估释放策略之间卵到成人收益的混合效应逻辑回归模型表明，释放策略彼此不同。观察到全软体动物生产在释放策略中产生了最高的招聘，并且已成为涉及少年释放的恢复工作的重点。相对于以孵化场养殖或放养的方式孵化的卵，成年返回的鱼（蛋）的成年几率是在牛弓鱼孵化场饲养的鲑鱼的9.7倍，在锯齿鱼孵化场养殖的鲑鱼的3.6倍。放入湖中保温箱中。在释放策略之间观察到的生产率和生活史特征表达方面的差异表明，少年释放并不是一个适合所有人的大小，我们建议在启动补充计划时进行类似的评估，以使观察到的结果与期望的目标相匹配。相对于以孵化场养殖或放养后放养的卵，成年返回的鱼（蛋）的成年几率是在牛弓鱼孵化场饲养的鲑鱼的9.7倍，在锯齿鱼孵化场养殖的鲑鱼的3.6倍。放入湖中保温箱中。在释放策略之间观察到的生产率和生活史特征表达方面的差异表明，少年释放并不是一个适合所有人的大小，我们建议在启动补充计划时进行类似的评估，以使观察到的结果与期望的目标相匹配。相对于以孵化场养殖或放养的方式孵化的卵，成年返回的鱼（蛋）的成年几率是在牛弓鱼孵化场饲养的鲑鱼的9.7倍，在锯齿鱼孵化场养殖的鲑鱼的3.6倍。放入湖中保温箱中。在释放策略之间观察到的生产率和生活史特征表达方面的差异表明，少年释放并不是一个适合所有人的大小，我们建议在启动补充计划时进行类似的评估，以使观察到的结果与期望的目标相匹配。