钓鱼胁迫对南加州重要猎用鱼海带鲈鱼的生理和行为影响

IF 1.8 3区 农林科学 Q2 FISHERIES
Caitlin R. McGarigal, Christopher G. Lowe
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引用次数: 0

摘要

北美的猎鱼种群面临着来自休闲垂钓者的越来越大的压力,然而强制性捕捞和释放规定对许多目标物种的亚致命影响仍然未知。在南加州,近几十年来,海带鲈鱼的数量显著下降,这促使了管理方面的变化和放生率的增加。为了评估当前捕捞法规的急性效应,我们与休闲垂钓者合作,评估了捕获应激对海带鲈鱼生理和行为的短期亚致死影响。为了评估生理应激的时间和程度,在垂钓和禁闭后的时间点(10-120分钟)采集血液样本,并与不到3分钟内采集的对照鱼进行比较。释放后恢复是通过比较对照鱼和重新捕获的鱼的生物标志物水平来确定的,这些鱼在自由时间从3小时到186天不等的时间内迅速取样。多次捕获的鱼的生物标志物水平进行了比较,以评估重复垂钓对生理反应的影响。在捕获后的一小时内,循环皮质醇、葡萄糖和乳酸水平升高并稳步上升,尽管垂钓时间和处理时间与生物标志物反应无关。鱼的大小显著影响鱼的应激,较大的鱼承受的应激较小,在24 h内恢复迅速。行为控制鱼,摄入隐藏在鱼饵内的声加速度计,表现出强烈的饮食活动,在有角度的鱼中减少了30小时。被跟踪的个体在运动速度和面积使用方面表现出很高的个体差异,没有明显的释放后影响。虽然这项研究发现鲈鱼对垂钓压力有弹性,但对捕获和释放的长期影响的评估是有必要的。该渔业还可以受益于船位限制法规、改进的垂钓者参与计划,以及在捕捞和释放期间将鱼类压力降至最低的最佳实践教育。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Physiological and Behavioral Effects of Angling Stress on Kelp Bass, an Important Game Fish in Southern California

Physiological and Behavioral Effects of Angling Stress on Kelp Bass, an Important Game Fish in Southern California

Game fish populations in North America face increasing pressure from recreational anglers, yet sublethal effects from mandatory catch-and-release regulations remain unknown for many targeted species. In southern California, Kelp Bass Paralabrax clathratus populations have significantly declined in recent decades, prompting changes in management and increasing release rates. To assess acute effects of current fishing regulations, we collaborated with recreational anglers to evaluate short-term, sublethal impacts of capture stress on Kelp Bass physiology and behavior. To evaluate the timeline and magnitude of physiological stress, blood samples were collected at time points (10–120 min) after angling and confinement and compared to control fish sampled in less than 3 min. Postrelease recovery was determined by comparing biomarker levels between control fish and recaptured fish that were rapidly sampled after a time at liberty ranging from 3 h to 186 d. Biomarker levels in fish recaptured multiple times were compared to previous samples to evaluate repetitive angling effects on physiological responses. Circulating cortisol, glucose, and lactate were elevated and steadily increased in the hour after capture, although angling duration and handling duration were not correlated with biomarker response. Fish size significantly affected fish stress, with larger fish experiencing less stress and rapid recovery within 24 h. Behavioral control fish, which ingested acoustic accelerometers hidden inside bait, exhibited strong diel activity that was reduced for 30 h in angled fish. Tracked individuals exhibited high individual variation in rate of movement and area use, with no noticeable postrelease impacts. Although this study found Kelp Bass to be resilient to angling stresses, evaluation of long-term effects from catch and release is warranted. This fishery may also benefit from slot limit regulations, improved angler engagement programs, and education on best practices that minimize fish stress during catch and release.

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来源期刊
Marine and Coastal Fisheries
Marine and Coastal Fisheries FISHERIES-MARINE & FRESHWATER BIOLOGY
CiteScore
3.40
自引率
5.90%
发文量
40
审稿时长
>12 weeks
期刊介绍: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science publishes original and innovative research that synthesizes information on biological organization across spatial and temporal scales to promote ecologically sound fisheries science and management. This open-access, online journal published by the American Fisheries Society provides an international venue for studies of marine, coastal, and estuarine fisheries, with emphasis on species'' performance and responses to perturbations in their environment, and promotes the development of ecosystem-based fisheries science and management.
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