Behaviour impairment in captured and released sablefish: ecological consequences and possible substitute measures for delayed discard mortality
Behaviour impairment in captured and released sablefish: ecological consequences and possible substitute measures for delayed discard mortality
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DOI：
10.1111/j.0022-1112.2005.00602.x
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发表时间：
2005-01-01
影响因子：
2
通讯作者：
Davis, MW
中科院分区：
文献类型：
--
作者：
Davis, MW
将1+和2+龄的帆状裸鲷（Anoplopoma fimbria）拖网4 ~ 11次。转移到空气中15或30分钟，然后在罐中保持长达35天，观察身体损伤和立即死亡。行为障碍、延迟死亡率和总死亡率。行为受损至少3它和恢复到正常水平的24后，压力诱导。行为障碍与延迟死亡率在2+年的鱼，但不是在1+年的鱼，表现出更大的变化，应激反应。本研究的结果和对过去丢弃和逃跑研究的回顾表明，现场延迟死亡的替代措施应包括身体损伤和行为障碍。这两种措施综合了与捕捞有关的应激因素的影响，这些应激因素可以产生和放大身体和生理损伤，导致鱼类状况的变化和延迟死亡。(C)2005年，不列颠群岛渔业协会（不要求原始美国政府工程）。
Sablefish Anoplopoma fimbria aged 1+ and 2+ years were towed for 4 11 in it net. transferred to air for either 15 or 30 min, and then held in tanks for up to 35 days for observation of physical injury, immediate mortality. behaviour impairment, delayed mortality and total mortality. Behaviour was impaired for at least 3 It and returned to normal levels by 24 It after stress induction. Behaviour impairment was correlated with delayed mortality in 2+ year fish but not in 1+ year fish which showed greater variation in stress responses. The results of this Study and a review of past discard and escapee studies showed that substitute measures for delayed mortality in the field should include physical in jury and behaviour impairment. These two measures integrate the effects of capture-related stressors which can produce and magnify physical and physiological injury, resulting in changes in fish condition and delayed mortality. (C) 2005 The Fisheries Society of the British Isles (No claim to original US government works).