Terminal tackle regulations can be a valuable tool for fisheries management, especially in multispecies fisheries where bycatch and discards are common issues. In the Gulf of Maine, recreational anglers frequently discard critically depleted Atlantic cod Gadus morhua L. as bycatch when targeting the abundant haddock Melanogrammus aeglefinus (L.) stock. The present study investigated species catch composition, catch rates and animal welfare across various terminal tackle setups, and aspects of capture and handling with the goal of reducing bycatch and discard mortality. Overall, 2558 cod and 4266 haddock were captured with six terminal tackle setups in the western Gulf of Maine from April to October 2018. Along with angler experience and capture depth, lure type primarily influenced species catch composition and catch-per-unit-effort; hook types additionally influenced hook-removal times and physical injuries to fish. Results indicate that using baited hooks can both promote haddock catch and reduce cod bycatch, with specific hook types promoting increased survival.

中文翻译：

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减少休闲渔业中的兼捕影响：案例研究检查缅因湾底栖鱼类渔业中的多物种终端捕捞

终端捕捞规定可以成为渔业管理的宝贵工具，特别是在兼捕和丢弃物是常见问题的多物种渔业中。在缅因湾，休闲垂钓者在瞄准大量黑线鳕Melanogrammus aeglefinus时，经常将严重枯竭的大西洋鳕鱼Gadus morhua L. 作为副渔获物丢弃(L.) 股票。本研究调查了各种终端渔具设置中的物种捕获量组成、捕获率和动物福利，以及捕获和处理的各个方面，目的是降低兼捕和丢弃死亡率。总体而言，从 2018 年 4 月到 10 月，在缅因州湾西部通过六个终端钓具设置捕获了 2558 条鳕鱼和 4266 条黑线鳕。除了垂钓者经验和捕获深度外，诱饵类型主要影响物种捕获量组成和单位努力捕获量；鱼钩类型还会影响鱼钩的去除时间和对鱼的身体伤害。结果表明，使用带饵的钩子既可以促进黑线鳕捕获量又可以减少鳕鱼兼捕，特定类型的钩子可以提高存活率。