Release of hatchery-reared juvenile cisco (Coregonus artedi) is an important tool for recovering Great Lakes populations, but post-release survival is unknown. Telemetry using small acoustic tags provides opportunities to assess the efficacy of hatchery-reared fish releases. However, better understanding of the tolerance of juvenile cisco to acoustic tags is needed. Juvenile cisco mortality and tag retention as a function of tag size:body size (Relative Tag Weight, RTW) was observed for 30 d post tag implantation in the laboratory. Tag loss and mortality increased with RTW. A single mortality occurred for RTW ≤ 3% and tag retention and survival was <50% for RTW > 7.0%. Logistic regression predicted >95% survival and tag retention to 30 d for RTW < 2.5%, with full survival of study fish for RTW of ≤2%. Sedation and surgery times did not affect survival of tagged fish, but results of anesthesia-only and sham surgeries highlight the need to minimize handling effects for effective acoustic telemetry studies. Our findings clarify thresholds of RTW and indicate that juvenile cisco can receive acoustic tag implants. Observing these limitations can improve the effectiveness of acoustic telemetry to assess success of cultured juvenile fish releases for conservation or restoration of native forage fish populations. Evaluation of the effects of acoustic tags over longer time periods and under environmental conditions, like those at release sites, are needed to further validate this technology.

孵化场饲养的 cisco 幼鱼 ( Coregonus artedi ) 的释放) 是恢复五大湖种群的重要工具，但释放后的生存情况尚不清楚。使用小型声学标签的遥测提供了评估孵化场养殖鱼类放流效果的机会。然而，需要更好地了解少年 cisco 对声学标签的耐受性。在实验室中，在标签植入后 30 天，观察到作为标签大小的函数的 cisco 幼鱼死亡率和标签保留率：体型（相对标签重量，RTW）。标签丢失和死亡率随 RTW 增加。RTW ≤ 3% 时发生单次死亡率，RTW > 7.0% 时标签保留和存活率 <50%。Logistic 回归预测，RTW < 2.5% 时，>95% 的存活率和标签保留至 30 天，RTW ≤2% 的研究鱼的完全存活率。镇静和手术时间不影响标记鱼的存活，但仅麻醉和假手术的结果突出了有效声学遥测研究的处理影响最小化的必要性。我们的研究结果澄清了 RTW 的阈值，并表明幼年 cisco 可以接受声学标签植入物。观察这些限制可以提高声学遥测的有效性，以评估养殖幼鱼释放的成功率，以保护或恢复本地饲料鱼种群。需要评估声学标签在较长时间和环境条件下的影响，如释放现场的环境条件，以进一步验证该技术。观察这些限制可以提高声学遥测的有效性，以评估养殖幼鱼释放的成功率，以保护或恢复本地饲料鱼种群。需要评估声学标签在较长时间和环境条件下的影响，如释放现场的环境条件，以进一步验证该技术。观察这些限制可以提高声学遥测的有效性，以评估养殖幼鱼释放的成功率，以保护或恢复本地饲料鱼种群。需要评估声学标签在较长时间和环境条件下的影响，如释放现场的环境条件，以进一步验证该技术。