Abstract Luminescent netting increases the catch rate of snow crabs (Chionoecetes opilio) over short soak times (1 d), however the commercial fishery often requires longer soak periods, up to1 week. Building on previous research, this study investigated the catch efficiency and size selectivity of pots with luminescent netting over long soak times (144–336 h) in the inshore snow crab fishery of Newfoundland, Canada. A total allowable catch and individual quota allocation management system for snow crab is regulated in Canada and using luminescent netting to increase catch rates would reduce the carbon footprint of the fishery by reducing days fished. Our results showed that luminescent pots had a 21.6 % and 18.3 % higher catch-per-unit-effort (CPUE; number of crabs per pot) of legal-sized crab and sub-legal sized crab, respectively, than control pots; with no difference for soft-shelled crab. Additionally, no significant differences were shown for size selectivity over the range of carapace widths observed between luminescent and control pots. Little other bycatch (female snow crab and unwanted species) were caught in either pot treatments. This study shows that luminescent netting increases the efficiency of the snow crab fishery, which provides economic and environmental benefits.

中文翻译：

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在长时间浸泡下使用发光网盆增加雪蟹 (Chionoecetes opilio) 的捕获量

摘要 发光网在较短的浸泡时间 (1 d) 内提高了雪蟹 (Chionoecetes opilio) 的捕获率，但商业渔业通常需要更长的浸泡时间，长达 1 周。在先前研究的基础上，本研究调查了加拿大纽芬兰近海雪蟹渔业在长时间浸泡（144-336 小时）内带有发光网的花盆的捕捞效率和尺寸选择性。加拿大对雪蟹的总允许捕捞量和个人配额分配管理系统进行了监管，使用发光网提高捕捞率将通过减少捕捞天数来减少渔业的碳足迹。我们的结果表明，发光盆的单位努力捕捞量（CPUE；每盆的螃蟹数量）分别比合法大小的螃蟹和亚合法大小的螃蟹高 21.6% 和 18.3%，比控制盆；与软壳蟹没有区别。此外，在发光盆和对照盆之间观察到的甲壳宽度范围内，尺寸选择性没有显示出显着差异。在这两种盆栽处理中，几乎没有其他兼捕（雌性雪蟹和不需要的物种）被捕获。这项研究表明，发光网提高了雪蟹渔业的效率，从而提供了经济和环境效益。