鲨鱼钓鱼,在鳍贸易的推动下,是全球鲨鱼数量下降的主要原因。这里,我们提供了一个案例研究,说明了工业渔业如何可能耗尽东热带太平洋的鲨鱼种群。2017年8月,中国国旗富源余冷999号船,在未经授权穿越加拉帕戈斯海洋保护区时被拘留。这艘船载有7639条鲨鱼,是迄今为止记录的最大缉获量之一。基于929个人(12%)的样本,我们发现了12种鲨鱼:9种被IUCN认为是脆弱或更高的风险,8种被列入CITES。四个物种的未成熟个体比例高于成熟个体,尽管大小分布暗示至少一些与该行动相关的渔船可能一直在使用围网渔具捕鱼设备,which,对于一些物种来说,违反国际公约。我们的数据揭示了渔业和非法贸易对东热带太平洋鲨鱼构成的威胁的严重性。
Shark fishing, driven by the fin trade, is the primary cause of global shark population declines. Here, we present a
case study that exemplifies how industrial fisheries are likely depleting shark populations in the Eastern Tropical Pacific Ocean. In August 2017, the vessel Fu Yuan Yu Leng 999, of Chinese flag, was detained while crossing through the Galápagos Marine Reserve without authorization. This vessel contained 7639
sharks, representing one of the largest seizures recorded to date. Based on a sample of 929 individuals (12%), we found 12 shark species: 9 considered as Vulnerable or higher risk by the IUCN and 8 listed in CITES. Four species showed a higher proportion of immature than mature individuals, whereas size-distribution hints that at least some of the fishing ships associated with the operation may have been using purse-seine gear fishing equipment, which, for some species, goes against international conventions. Our data expose the magnitude of the threat that fishing industries and illegal trade represent to
sharks in the Eastern Tropical Pacific Ocean.