Movements of common fish species in large lakes that are inadequately known is challenging for fisheries management. Pikeperch (Sander lucioperca) (n = 478; mean length = 42.1 cm; SD = 7.0), bream (Abramis brama) (n = 775; mean length = 31.1 cm; SD = 5.3) and roach (Rutilus rutilus) (n = 939; mean length = 21.4 cm; SD = 2.0) were marked with individual T-anchor tags to investigate movements in Lake Vesijärvi, a large lake situated in southern Finland consisting of several basins and managing by multiple entities. All species moved between basins, but only rarely moved outside tagging areas. The recapture rate of pikeperch was higher than roach and bream. Tagged fish consistently crossed municipality borders and water ownership units, thereby forming shared stocks, which underlined the importance of cooperation in lake restoration and a need to unite fragmented water ownership. Management of fisheries for cyprinid fishes could be more efficient if fishing targeted the most suitable areas without considering restrictions due to fragmented water ownership. Tagging data provided information on which parts of a large lake should be subjected to uniform pikeperch fisheries management. The importance of other species catch varied between different parts of the lake, thereby requiring different fishing regulations. Tagging data on common fish species provided valuable information on fish movements to support spatially explicit fisheries management.

中文翻译：

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梭鲈 (Sander lucioperca)、蟑螂 (Rutilus rut​​ilus) 和鳊鱼 (Abramis brama) 在芬兰 Vesijärvi 湖的北方湖泊中的活动

人们对大型湖泊中常见鱼类的活动了解不够，这对渔业管理来说是一个挑战。梭鲈 ( Sander lucioperca ) ( n  = 478；平均长度 = 42.1 厘米；SD = 7.0)、鳊鱼 ( Abramis brama ) ( n  = 775；平均长度 = 31.1 厘米；SD = 5.3) 和蟑螂 ( Rutilus rut​​ilus ) ( n  = 939；平均长度 = 21.4 厘米；SD = 2.0）被标记有单独的 T 型锚标签，以调查 Vesijärvi 湖的运动情况，Vesijärvi 是位于芬兰南部的一个大湖，由多个盆地组成，由多个实体管理。所有物种都在流域之间移动，但很少移动到标记区域之外。梭鲈的重新捕获率高于蟑螂和鳊鱼。带标签的鱼不断跨越城市边界和水所有权单位，从而形成共享种群，这凸显了湖泊恢复合作的重要性以及统一分散的水所有权的必要性。如果捕捞针对最合适的区域而不考虑由于水权分散而造成的限制，那么鲤科鱼类的渔业管理可能会更加有效。标记数据提供了关于大湖的哪些部分应接受统一梭鲈渔业管理的信息。其他物种捕捞的重要性因湖的不同部分而异，因此需要不同的捕捞法规。常见鱼类的标记数据提供了有关鱼类运动的宝贵信息，以支持空间明确的渔业管理。