Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
Distinguishing the cause and magnitude of capture-related mortality (CRM) in fishes is important for effective management. To better understand CRM in yellowfin tuna (Thunnus albacares) released in the recreational troll fishery off the United States east coast, 48 fish (76–127 cm curved fork length, CFL) were monitored for up to 86 days postrelease with survivorship pop-up satellite archival tags. Recovered data indicated 40 fish were alive at the time of tag detachment and eight died, including six from predation, from 0 to 30 days postrelease. Survival model variants were constructed to independently estimate the rates of immediate capture and handling (CH), postrelease (PR), total CRM (CH + PR), and natural mortality (M) for small (≤103 cm CFL) and large (>103 cm CFL) fish under different hypotheses and causes of mortality. CH was low (0%–8%) for both size classes but predation was an important component of PR, particularly in the small size class. Total CRM was 51% (95% CI: 26%, 81%) for small and 8% (95% CI: 2%, 30%) for large fish.

中文翻译：

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参数生存模型的应用，以了解与休闲渔业有关的捕捞相关死亡率和黄鳍金枪鱼（Thunnus albacares）的捕食

《加拿大渔业和水生科学杂志》，印刷前。
区分鱼类中与捕获有关的死亡率（CRM）的原因和程度对于有效管理很重要。为了更好地了解美国东海岸休闲巨魔渔业中释放的黄鳍金枪鱼（Thunnus albacares）中的CRM，对释放后存活期高达86天的48条鱼（76-127厘米弯叉长，CFL）进行了监测卫星档案标签。恢复的数据表明，在释放标签时，有40条鱼还活着，有8条死亡，其中6条来自捕食，死后0至30天。构建生存模型变体，以独立地估计小（≤103cm CFL）和大（> 103 cm CFL）的立即捕获和处理（CH），释放后（PR），总CRM（CH + PR）和自然死亡率（M）的比率103 cm CFL）鱼在不同的假设和致死原因下。两种体型的CH均较低（0％–8％），但捕食是PR的重要组成部分，尤其是在小体型中。小型鱼的总CRM为51％（95％CI：26％，81％），大型鱼为8％（95％CI：2％，30％）。