Stock and Market Status of High-Valued Blackspotted Croaker (Protonibea diacanthus) in Bangladesh

IF 2 3区农林科学 Q2 FISHERIES

Fisheries Management and Ecology Pub Date : 2025-01-06 DOI:10.1111/fme.12791

Suman Barua, Qun Liu, Xu Chen, Eman A. Abo Eleneen

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引用次数: 0

Abstract

The blackspotted croaker (Protonibea diacanthus) is among the highest-valued commercial marine fish species in Bangladesh. Therefore, we assessed the stock status, economic significance, and market status of blackspotted croaker in the Bay of Bengal, Bangladesh. We estimated life history parameters and sustainability indicators to determine if the stock was being sustainably managed. Size of blackspotted croaker was significantly differ temporally. Blackspotted croaker increased in weight allometrically in relation to length. Length-age life history parameters were L_∞ = 161.16 cm, k = 0.39 year⁻¹. Natural mortality M was 0.39 year⁻¹ and fishing mortality F was 0.35 year⁻¹. Catch composition and sustainably indicators revealed that the stock was prone to recruitment and growth overfishing. Medium to large sized blackspotted croaker (> 85 cm) fetched the highest price in commercial markets for the swim bladders that was worth many times more than the value of fillets. The highest demand of swim bladders in export commerce termed this species as marine gold to the fishers. Therefore, fishers were increasingly motivated to target the species. Ununiformed landing of blackspotted croaker, for domestic and international trade of swim bladder of blackspotted croaker, and poorly documented trading supply chains make this fishing industry luck-driven. Management interventions are needed to sustain the fishery and economic value.

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孟加拉国高价值黑斑鱼（Protonibea diacanthus）的存量和市场状况

黑斑鱼（Protonibea diacanthus）是孟加拉国价值最高的商业海洋鱼类之一。因此，我们评估了孟加拉湾黑斑鱼的种群状况、经济意义和市场地位。我们估计了生活史参数和可持续性指标，以确定该种群是否得到可持续管理。黑斑鱼的大小在时间上有显著差异。黑斑鱼的体重随长度呈异速增长。长龄寿命参数L∞= 161.16 cm, k = 0.39 year−1。自然死亡率M为0.39年- 1，捕捞死亡率F为0.35年- 1。渔获量组成和可持续指标显示，该种群容易发生增收和过度捕捞。中大型黑斑鱼（85cm）的鱼鳔在商业市场上拍出了最高的价格，其价值是鱼片的数倍。在出口贸易中对鱼鳔的需求量最大，这一物种被渔民称为海洋黄金。因此，渔民们越来越有动力瞄准这个物种。由于黑斑鱼鱼鳔的国内外贸易，黑斑鱼的登陆不统一，贸易供应链记录不完整，使得这一渔业产业受到运气的驱动。需要采取管理干预措施来维持渔业和经济价值。

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来源期刊

Fisheries Management and Ecology 农林科学-渔业

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Fisheries Management and Ecology is a journal with an international perspective. It presents papers that cover all aspects of the management, ecology and conservation of inland, estuarine and coastal fisheries. The Journal aims to: foster an understanding of the maintenance, development and management of the conditions under which fish populations and communities thrive, and how they and their habitat can be conserved and enhanced; promote a thorough understanding of the dual nature of fisheries as valuable resources exploited for food, recreational and commercial purposes and as pivotal indicators of aquatic habitat quality and conservation status; help fisheries managers focus upon policy, management, operational, conservation and ecological issues; assist fisheries ecologists become more aware of the needs of managers for information, techniques, tools and concepts; integrate ecological studies with all aspects of management; ensure that the conservation of fisheries and their environments is a recurring theme in fisheries and aquatic management.