Studying the species‐specific responses to fishing capture is critical for effective management and conservation of bycatch species given that acute stress incurred from capture and handling may ultimately lead to mortality. While species of low commercial value are often overlooked, having accurate information on the effects of capture on all species is necessary for ecosystem‐based management. Sea Raven (SR) Hemitripterus americanus and Longhorn Sculpin (LHS) Myoxocephalus octodecemspinosus are routinely captured in the commercial American lobster Homarus americanus fishery in the Gulf of Maine, and they are discarded due to low commercial value. Despite a lack of economic value, these predatory species play important roles in shaping the benthic communities that they inhabit, highlighting the need to study their stress and mortality due to capture and handling. To help understand the effects of the lobster fishery on these species, the current study evaluated the physical, behavioral, and physiological stress responses of SR and LHS to capture in the state of Maine Zone G commercial lobster fishery. Collectively, our results suggest that although these species appeared to be resilient to capture based on an overt injury assessment, stress responses occurred based on reflex impairment and physiological perturbations, and these responses were species‐specific. Given the prevalence of behavioral and physiological stress in this study, further research into the survival outcomes of SR and LHS following release in the commercial lobster fishery is warranted.

中文翻译：

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商业化龙虾捕捞中的兼捕：对两个底栖捕食者海乌鸦和长角S的影响

鉴于捕捞和处理引起的急性应激可能最终导致死亡，因此研究针对捕捞的物种特定反应对于有效管理和保护兼捕物种至关重要。虽然通常会忽略低商业价值的物种，但是对于基于生态系统的管理，必须有关于捕捞对所有物种影响的准确信息。通常在商业美洲龙虾美洲大螯虾中捕获海鸦（SR）美洲半边虾和长角牛Sculpin（LHS）八头鱼octodecemspinosus。缅因湾的渔业，由于商业价值低而被丢弃。尽管缺乏经济价值，但这些掠食性物种在塑造其栖息的底栖生物群落中发挥着重要作用，突显了需要研究由于捕获和处理而造成的压力和死亡率。为了帮助理解龙虾捕捞对这些物种的影响，本研究评估了SR和LHS在缅因州G区商业龙虾捕捞中的物理，行为和生理应激反应。总的来说，我们的结果表明，尽管根据公开的伤害评估，这些物种似乎具有一定的捕获能力，但基于反射损伤和生理扰动仍会产生应激反应，并且这些反应是特定物种的。