在美国墨西哥湾,掠夺影响了垂钓者对沿海鲨鱼管理和保护的看法

Evan Gerald Prasky, J. Marcus Drymon, Mandy Karnauskas, Alena Q. Anderson, Sarah L. Gibbs, Jonathan H. Grabowski, Amanda E. Jargowsky, Danielle M. McAree, Ana R. Osowski, Savannah H. Swinea, Steven B. Scyphers
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引用次数: 0

摘要

过度捕捞、栖息地退化和气候变化导致全球海洋鲨鱼数量下降。然而,在美国墨西哥湾(GoM),经过几十年成功的监管和执行,几种沿海鲨鱼物种的数量开始稳定下来。沿海鲨鱼数量的稳定,加上休闲捕鱼活动的增加,有可能加剧人类与野生动物的互动。最常报道的冲突是鲨鱼的掠夺,即鲨鱼部分或完全移除被钩住的物种。据报道,在过去的几年里,鲨鱼掠夺事件的增加已经开始削弱垂钓者对鲨鱼保护的支持,这可能会破坏之前几十年的工作。为了解决这些问题,我们在全国范围内进行了一项在线调查,以描述捕捞对休闲珊瑚鱼钓鱼者的捕鱼满意度和对鲨鱼管理和保护的看法的影响。研究结果显示,墨西哥湾大部分休闲垂钓者都目睹了鱼类的掠夺行为,但并没有改变他们的捕鱼行为。相比之下,垂钓者对管理鲨鱼数量的观点在减少种群规模和维持现有种群水平之间存在分歧。随着墨西哥湾沿岸鲨鱼数量的持续恢复,鲨鱼的掠夺行为可能会增加。因此,努力描述垂钓者的满意度和看法是未来鲨鱼保护倡议的关键组成部分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Depredation influences anglers’ perceptions on coastal shark management and conservation in the United States Gulf of Mexico
Overfishing, habitat degradation, and climate change have caused declines in shark populations throughout the world’s oceans. However, in the United States Gulf of Mexico (GoM), populations of several coastal shark species are starting to stabilize following decades of successful regulations and enforcement. The stabilization of coastal shark populations, coupled with increases in recreational fishing effort, has the potential to escalate human-wildlife interactions. The most often reported conflict is shark depredation, the partial or complete removal of a hooked species by a shark. Reported increases in shark depredation within the last several years have begun to erode angler support for shark conservation, potentially undermining decades of previous work. To address these concerns, we implemented a GoM-wide online survey to characterize the impact of depredation on recreational reef fish anglers’ fishing satisfaction and perceptions of shark management and conservation. Our results revealed that most recreational anglers in the GoM have witnessed depredation but have not changed their fishing behaviors. In contrast, anglers’ viewpoints on managing shark populations were split between reducing population sizes and maintaining current population levels. As coastal shark populations in the GoM continue to recover, shark depredation is likely to increase. Consequently, efforts to characterize anglers’ satisfaction and perceptions are a critical component of future shark conservation initiatives.
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