Length-based stock assessment of the blue swimming crab Portunus pelagicus (Linnaeus, 1758) in the northern coast of Java']Java, Indonesia

被引:0
作者
Widiyastuti, Heri [1 ]
机构
[1] Natl Res & Innovat Agcy BRIN, Res Ctr Fishery, Bogor, Indonesia
来源
INDIAN JOURNAL OF FISHERIES | 2024年 / 71卷 / 02期
关键词
Gillnet Management recommendation; Spawning potential ratio Stock status; NATURAL MORTALITY; FISH; MANAGEMENT; GROWTH; MODEL;
D O I
10.21077/ijf.2024.71.2.133183-02
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The blue swimming crab Portunus pelagicus is heavily exploited in the northern coast of Java (NCJ), due to its high economic value as an export commodity. Without any management measures, the continued fishing efforts could lead to the depletion of the blue swimming crab (BSC) stock, threatening the economy of fishing communities. Stock assessment is crucial to evaluate stock status and to develop management recommendations. Length frequency and some biological data for 2019 was used to perform a length-based assessment of BSC fisheries in the NCJ. This study revealed that a high fishing mortality and a low selectivity of gillnet fishery had resulted in recruitment overfishing of BSC, with a spawning potential ratio of 0.20 +/- 0.05. The current fishing mortality has exceeded 37% of the optimum level and the current selectivity is below the optimal value of a 12 mm carapace width. A combination of management measures including 37% reduction in fishing effort, gear modification to attain 12 mm selectivity, closure of the spawning area in August and habitat restoration, could be implemented to ensure the sustainability of blue swimming crabs in the Northern Coast of Java.
引用
收藏
页码:15 / 21
页数:7
相关论文
共 37 条
[1]  
ALAGARAJA K, 1984, Indian Journal of Fisheries, V31, P177
[2]   Length-frequency data approaches to evaluate snapper and grouper fisheries in the Java']Java Sea, Indonesia [J].
Amorim, Patricia ;
Sousa, Pedro ;
Jardim, Ernesto ;
Azevedo, Manuela ;
Menezes, Gui M. .
FISHERIES RESEARCH, 2020, 229
[3]  
[Anonymous], 2008, R: A language and environment forstatistical computing
[4]  
Azkia L. I., 2022, J. Aquatropica Asia, V7, P69
[5]  
Azra M. N., 2019, Aquac.Rep., V15, P1
[6]  
Boesono H, 2018, PERTANIKA J TROP AGR, V41, P879
[7]  
ERNAWATI T., 2017, BIODIVERSITAS, V18, P1705
[8]   Length-Based Assessment of an Artisanal Albulid Fishery in the South Pacific: a Data-Limited Approach for Management and Conservation [J].
Filous, Alexander ;
Lennox, Robert J. ;
Clua, Eric E. G. ;
Cooke, Steven J. ;
Danylchuk, Andy J. .
MARINE AND COASTAL FISHERIES, 2019, 11 (06) :519-534
[9]  
Goodyear C. Philip, 1993, Canadian Special Publication of Fisheries and Aquatic Sciences, V120, P67
[10]   A simple length-structured model based on life history ratios and incorporating size-dependent selectivity: application to spawning potential ratios for data-poor stocks [J].
Hordyk, Adrian R. ;
Ono, Kotaro ;
Prince, Jeremy D. ;
Walters, Carl J. .
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 2016, 73 (12) :1787-1799