Thirteen river basins draining into the Marmara, Aegean and Mediterranean Seas were selected for evaluation of European eel (Anguilla Anguilla L., 1758) catch in Turkey. These basins were grouped into three so‐called “eel monitoring area” (EMA). The official province‐based annual landing data between 1996 and 2018 were assessed for each of the monitoring areas. Statistically significant decreases over the years were observed in the landing data in all of the monitoring areas. The adequate protection of the European eel standing stocks, particularly in some critical eel habitats such as Köyceğiz lagoon showed over time a small decrease in eel catches in EMA‐2. However, a substantial decrease was detected in the province of Adana, which includes the Seyhan and Ceyhan basins, and these are located in the EMA‐3. The catch data mainly based on the commercial fisheries and the restriction on export seems to be the main reason for the decline in catches in the three EMAs. Thus the suggested monitoring areas (EMAs) are needed to structure research programmes on basic knowledge on escapement ratio of migrating silver eels, arrival and upstream migration of glass eels in the rivers of each of the EMAs in order to build area specific management strategies. These monitoring areas may provide practical units that management can use in future fisheries regulations.

中文翻译：

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对年度欧洲鳗鱼（安圭拉·安圭拉·林奈夫斯，1758年）的评估在三个建议的主要监测地区进行，以支持土耳其鳗鱼渔业管理系统的发展

选择了十三条流向马尔马拉，爱琴海和地中海的流域来评估欧洲鳗鱼（安圭拉L.，1758）在土耳其抓获。这些盆地被分为三个所谓的“鳗鱼监测区”（EMA）。针对每个监测区域评估了1996年至2018年之间基于省的官方年度着陆数据。多年来，在所有监测区域的着陆数据中均观察到统计学上显着的下降。随着时间的推移，欧洲鳗e种群的适当保护得到了充分的保护，特别是在一些重要的鳗鱼栖息地，例如科伊斯海兹泻湖中，显示出EMA-2的鳗鱼捕获量略有下降。但是，在包括Seyhan和Ceyhan盆地在内的Adana省发现了大幅下降，这些省位于EMA-3。捕捞数据主要基于商业渔业，而出口限制似乎是三个EMA中捕捞量下降的主要原因。因此，需要建议的监测区（EMAs）来构建研究计划，以建立关于以下方面的基础知识的研究计划：迁移银鳗的逃逸率，每个鳗鱼河中玻璃鳗的到达和上游迁移，以建立针对特定区域的管理策略。这些监测区域可以提供管理部门可以在未来的渔业法规中使用的实际单位。