Barotrauma is a frequent event in fish captured from depth, and anglers often attempt to remedy this problem by venting fish. Barotrauma has been frequently assessed in fish during the warm water season, but no work has been done during winter ice angling, and the need and/or effectiveness of venting for ice-angled fish has not been quantified. To answer these questions, bluegill Lepomis macrochirus Rafinesque and black crappie Pomoxis nigromaculatus (Lesueur) were angled through the ice, barotrauma assessed, and the effect of venting on reflex responsiveness and blood glucose levels after 1 or 2.5 h of holding were determined. Greater capture depths resulted in more severe barotrauma, with bluegill experiencing symptoms at shallower depths than black crappie. Bluegill reflex action mortality predictor (RAMP) scores improved more than black crappie scores following venting. These results suggest barotrauma impacts fish in winter fisheries in a similar fashion to fish in warmer conditions, with species-specific differences in their susceptibility to barotrauma and their response to venting.

中文翻译：

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两种冰角鱼基于深度的气压伤严重程度、反射障碍和应激反应

气压伤是从深海捕获的鱼的常见事件，垂钓者经常试图通过给鱼排气来解决这个问题。在暖水季节经常对鱼的气压伤进行评估，但在冬季冰钓期间没有进行任何工作，并且尚未量化冰钓鱼的通风需求和/或有效性。为了回答这些问题，蓝鳃鱼Lepomis macrochirus Rafinesque 和黑鲈鱼Pomoxis nigromaculatus(Lesueur) 穿过冰块，评估气压伤，并确定在保持 1 或 2.5 小时后排气对反射反应和血糖水平的影响。更大的捕获深度导致更严重的气压伤，蓝鳃鱼在比黑鲈鱼更浅的深度出现症状。蓝鳃反射动作死亡率预测因子 (RAMP) 评分在排气后比黑鲈鱼评分提高更多。这些结果表明，气压伤对冬季渔业中的鱼类的影响与温暖条件下的鱼类相似，在对气压伤的易感性和对通风的反应方面存在物种特异性差异。