Angling records track the near extirpation of angel shark Squatina squatina from two Irish hotspots
Angling records track the near extirpation of angel shark Squatina squatina from two Irish hotspots
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钓鱼记录显示天使鲨在爱尔兰的两个热点地区几乎灭绝
DOI：
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发表时间：
2019
影响因子：
3.1
通讯作者：
W. Roche
中科院分区：
文献类型：
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作者：
S. Shephard;C. Wögerbauer;P. Green;J. Ellis;W. Roche
天使鲨Squatina Squatina在从不列颠群岛到包括地中海在内的非洲西北部的沿海水域历史上很常见。据报道，在该物种被列入欧盟禁止物种名单并随后被世界自然保护联盟列为极度濒危物种之前，来自北欧的商业登陆量减少到接近零。在近海拖网调查中很少见到，可能是因为与沿海种群和栖息地的空间重叠较少。另一种监测数据来源是垂钓船只，它们可以在离散的近岸地区作业。对爱尔兰水域2个独特的垂钓者标记和标本捕捞数据的40年时间序列的分析，以及来自自愿包机垂钓日志的渔获量和努力量记录，揭示了南美斑鱼捕获量的急剧下降。自2011年以来，只有1人被标记。几乎所有的报告都来自Tralee Bay和Clew Bay(爱尔兰西部)，那里仍有轶事目击事件发生。这些历史热点可能对国际天使鲨保护工作具有重要意义。
The angel shark Squatina squatina was historically common in coastal waters from the British Isles to north-western Africa, including the Mediterranean. Reported commercial landings from northern Europe reduced to near-zero before the species was added to the EU Prohibited Species list and subsequently listed as Critically Endangered by the IUCN. S. squatina is encountered rarely in offshore trawl surveys, probably because of low spatial overlap with coastal populations and habitats. An alternative source of monitoring data is angling vessels, which can operate in discrete inshore areas. Analyses of 2 unique >40 yr time series of angler tagging and specimen catch data from Irish waters, with catch and effort records from voluntary charter angling logbooks, reveal a sharp decline in S. squatina catches. Only 1 individual has been tagged since 2011. Almost all reports were from Tralee Bay and Clew Bay (western Ireland), where anecdotal sightings still occur. These historical hotspots may be significant to international angel shark conservation efforts.