Stock Status of Whitespotted Bambooshark, Chiloscyllium plagiosum (Anonymous [Bennett], 1830) in Sabah, Malaysia, Using Yield-Per-Recruit and Spawning Per-Recruit Analyses

Q3 Environmental Science

Asian Fisheries Science Pub Date : 2022-05-09 DOI:10.33997/j.afs.2022.35.2.003

S. Pattarapongpan, S. Arnupapboon, A. Arshad, T. Matsuishi

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引用次数: 1

Abstract

Whitespotted bambooshark, Chiloscyllium plagiosum (Anonymous [Bennett], 1830), is a major shark species caught in waters off Sabah, Malaysia. Despite the massive landing amount, its biological and stock status information is limited. In 2015–2016, the elasmobranch data collection was conducted in Southeast Asia, including Sabah. A yield-per-recruit (YPR) and spawning-per-recruit (SPR) analyses were performed to assess this data-deficient species’ stock status. The growth parameter, average maximum length, L∞, and growth rate, K, for males and females were 81.13 cm and 0.21 year-1 , and 84.30 cm and 0.18 year-1 , respectively. Limit and target biological reference points, maximum fishing mortality and fishing mortality corresponding to 10 % of YPR slope (Fmax and F0.1, respectively) for YPR, and fishing mortality corresponding to 20 % and 30 % of spawning stock remained (F20% and F30%, respectively) for SPR, were calculated. The results suggest neither growth nor recruit overfishing was occurring. Monitoring and surveillance of existing management measures are necessary to ensure sustainable utilisation of the stock.

查看原文本刊更多论文

马来西亚沙巴白斑斑竹（Chiloschillium plagosum）（匿名者[Bennet]，1830）的种群状况，使用每次采集的产量和每次采集的产卵量分析

白斑竹鲨，Chiloschillium plagosum（匿名者[Bennnett]，1830），是在马来西亚沙巴海域捕获的一种主要鲨鱼。尽管着陆量巨大，但其生物和库存状况信息有限。2015-2016年，在包括沙巴在内的东南亚进行了elasmobranch数据收集。进行了每次繁殖产量（YPR）和每次繁殖产卵量（SPR）分析，以评估该数据不足物种的种群状况。雄性和雌性的生长参数、平均最大长度L∞和生长速率K分别为81.13厘米和0.21岁-1和84.30厘米和0.18岁-1。计算了极限和目标生物参考点、YPR的最大捕捞死亡率和捕捞死亡率，对应于YPR斜率的10%（分别为Fmax和F0.1），以及SPR的捕捞死亡率，分别对应于剩余产卵量的20%和30%（分别为F20%和F30%）。结果表明，无论是增长还是补充过度捕捞都没有发生。有必要对现有管理措施进行监测和监督，以确保库存的可持续利用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Asian Fisheries Science Agricultural and Biological Sciences-Food Science

CiteScore

2.20

自引率

0.00%

发文量

期刊介绍： The Asian Fisheries Science (AFS) was first published in 1987. It is an open access SCOPUS indexed publication of the Asian Fisheries Society. Four regular issues are published annually in March, June, September and December. In addition, special issues are published on specific topics. Full texts of the articles are available for free download and there is no publication fee. The journal promotes fisheries science which has an international appeal with special focus on Asian interests.