Length-Based Spawning Potential Ratio (LB-SPR) for Red Grouper (Epinephelus morio) and Associated Species in the Commercial Fishery of the Yucatan Peninsula, Mexico

IF 0.7 4区 农林科学 Q4 FISHERIES
Luis Alberto Rincón‒Sandoval, Jorge Alberto López‒Rocha
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Abstract

The study calculated the Length-Based Spawning Potential Ratio (LB-SPR) for several species, including red grouper (Epinephelus morio), black grouper (Mycteroperca bonaci), gag grouper (M. microlepis), yellowtail snapper (Ocyurus chrysurus), lane snapper (Lutjanus synagris), hogfish (Lachnolaimus maximus), and white grunt (Haemulon plumierii). Data were obtained from the small-scale commercial fleet operating in the red grouper fishery on the Campeche Bank within the Yucatan Peninsula. Monthly records of total length (cm) from April 2017 to May 2018, totaling 10,182 fish, were collected from five fishing ports along the Yucatan Peninsula coast. Biological data, such as growth and reproductive patterns and exploitation parameters were gathered from scientific literature. The LB-SPR package on the R Core Team platform was utilized for analysis. Despite being the largest, groupers exhibited immaturity (SL50 < L50) and low Spawning Potential Ratio (SPR). Red and black groupers showed particularly low SPR values (0.10 and 0.05, respectively), indicating a looming risk of local extinction. The gag grouper achieved the highest SPR value (0.26) among groupers, although it was very close to the minimum critical value (i.e., 0.20). Snappers, hogfish, and white grunt were generally captured in the adult state (SL50 > L50). Yellowtail, hogfish, and white grunt displayed high SPR values (0.44, 0.72, and 0.98, respectively). Lane snapper had a low SPR (0.28) but fell within the range for maintaining satisfactory stock productivity, albeit with reduced yields. The findings emphasize the urgent need to adjust the current management framework for the red grouper fishery, focusing on improving fishing gear selectivity to address heightened pressure on both juvenile groupers and adult lane snapper. Implementing these measures is crucial to mitigate the risks of local extinction and population decline for each species.

墨西哥尤卡坦半岛商业渔业中红石斑鱼(Epinephelus morio)及相关鱼种的基于长度的产卵潜能比(LB-SPR)
该研究计算了多个鱼种的基于长度的产卵潜能值比(LB-SPR),包括红石斑鱼(Epinephelus morio)、黑石斑鱼(Mycteroperca bonaci)、石斑鱼(M. microlepis)、黄尾鲷鱼(Ocyurus chrysurus)、巷鲷鱼(Lutjanus synagris)、鲯鳅(Lachnolaimus maximus)和白噜鳅(Haemulon plumierii)。数据来自在尤卡坦半岛坎佩切河岸从事红石斑鱼捕捞的小型商业船队。从尤卡坦半岛沿岸的五个渔港收集了 2017 年 4 月至 2018 年 5 月的月度总长度(厘米)记录,共计 10,182 条鱼。从科学文献中收集了生物数据,如生长和繁殖模式以及开发参数。利用 R 核心团队平台上的 LB-SPR 软件包进行分析。尽管石斑鱼体型最大,但却表现出不成熟(SL50L50)。鰤鱼、猪鲉鱼和白颊鲈的 SPR 值较高(分别为 0.44、0.72 和 0.98)。小巷鲷的 SPR 值较低 (0.28),但在维持令人满意的种群生产力的范围内,尽管产量有所降低。研究结果强调,迫切需要调整当前的红石斑鱼渔业管理框架,重点是提高渔具选择性,以应对幼石斑鱼和成年巷鲷面临的更大压力。实施这些措施对于减轻每个物种在当地灭绝和数量下降的风险至关重要。
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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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