Recruitment is one of the driving forces determining the population dynamics of a stock, and knowledge about recruitment is crucial in providing reliable results in modern stock assessment. The population of the American Eel Anguilla rostra is at risk, and the fisheries on the elvers are one threat for its persistence. We applied a generalized depletion model on the catch and effort data of the elver fishery of the East River, Chester, Nova Scotia, from 1996 to 2018. The elver fishery of the East River did not have high exploitation pressure on the elver waves passing through. The natural mortality rate varied substantially among years, with a mean generally in agreement with other studies. The estimates of the model parameters did not exhibit significant temporal trends. Moreover, the estimate of annual elver abundance matched well with the fishery‐independent abundance index, providing the first empirical support of the generalized depletion model. The generalized depletion model is an effective method to assess the exploitation status of elver fisheries, as well as providing an estimate of recruitment strength and natural mortality that can be used for stock assessment on the adult stocks when only fisheries‐dependent catch and effort data are available.

中文翻译：

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广义耗竭模型在美国鳗El招聘中的应用及调查数据的经验支持

招聘是确定种群动态的驱动力之一，而有关招聘的知识对于在现代种群评估中提供可靠的结果至关重要。美国鳗鱼安圭拉罗斯特拉的人口濒临灭绝，老年人的渔业是其持久性的威胁之一。我们对1996年至2018年新斯科舍省切斯特市东河的老年渔业捕捞量和努力量数据应用了广义耗竭模型。东河的老年渔业对穿过的海浪没有很高的开采压力。多年以来，自然死亡率有很大不同，其平均数通常与其他研究一致。模型参数的估计没有显示出明显的时间趋势。此外，年长者丰度的估计值与独立于渔业的丰度指数非常吻合，为广义的耗竭模型提供了第一个经验支持。广义耗竭模型是评估老年渔业开发状况的有效方法，