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首页> 外文期刊>ICES Journal of Marine Science >Ecological risks of demersal fishing on deepwater chondrichthyan populations in the Southern Indian and South Pacific Oceans
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Ecological risks of demersal fishing on deepwater chondrichthyan populations in the Southern Indian and South Pacific Oceans

机译：南方印度和南太平洋深水中捕捞的生态风险

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摘要

Risks to deepwater chondrichthyans (sharks, rays, and chimaeras) from fishing are poorly understood, particularly in areas beyond national jurisdiction. We adapted productivity-susceptibility analysis (PSA) and sustainability assessment for fishing effects (SAFE) to assess the vulnerability of 173 deepwater chondrichthyans to various demersal fishing gears in the Southern Indian and South Pacific Oceans. Several species were categorized as being at high or extreme vulnerability, including some deepwater shark species in the Southern Indian Ocean that are reported to be commercially targeted. There was good concurrence between PSA and SAFE results for species categorized as being at high or extreme vulnerability by the SAFE, but as expected there was an overall greater number assessed to be as higher vulnerability using PSA due to its precautionary nature. Our results indicate probable misclassifications in the PSA relative vulnerability rankings, highlighting the value of applying more quantitative tools, such as SAFE, when adequate data are available. Our findings indicate that better catch, effort, and biological information are needed to inform the assessment and management of deepwater chondrichthyans. If targeted fishing of deepwater shark species continues in the Southern Indian Ocean, improved assessments and estimates of sustainable yields are urgently required to mitigate the risk of overexploitation.
机译：来自钓鱼的深水软骨丘脑（鲨鱼，射线和Chimaeras）的风险很差，特别是在国立管辖范围内的地区。我们适应了生产率 - 敏感性分析（PSA）和用于捕捞效果的可持续性评估（安全），以评估173个深水软骨中的脆弱性，以评估南方印度和南太平洋的各种侧面捕鱼齿轮的脆弱性。几种物种被分类为高或极端脆弱性，包括南印度洋中的一些深水鲨鱼种，据报道据报道是商业目标的。 PSA之间的并发良好并在安全的物种中，由于安全性的预期，分类为高或极端漏洞的物种，因此由于其预防性而评估的整体数量更大的数量评估为使用PSA的更高漏洞。我们的结果表明PSA相对漏洞排名中可能的错误分类，突出了应用更多定量工具的值，例如安全的足够数据。我们的调查结果表明，需要更好的捕获，努力和生物信息，以告知Deepwater Chondrichthyans的评估和管理。如果南方印度洋持续捕捞深水鲨鱼物种，迫切需要改进的评估和可持续收益率的估计，以减轻过度曝光的风险。

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