Muhsan Ali Kalhoro, Lixin Zhu, Jeong Ha Kim, Xiaoyong Liu, Chunli Liu, Zhenlin Liang
{"title":"小规模大贡献:利用 cmsy 和 lbb 方法评估巴基斯坦北阿拉伯海印度鲭鱼 (Rastrelliger anagurta)渔业的种群状况","authors":"Muhsan Ali Kalhoro, Lixin Zhu, Jeong Ha Kim, Xiaoyong Liu, Chunli Liu, Zhenlin Liang","doi":"10.1007/s11852-024-01068-9","DOIUrl":null,"url":null,"abstract":"<p>Overfishing remains a global concern, however effective management from well valuation of fisheries may efficiently reduce the impact of fishing. Therefore, it is important to evaluate the biomass of Indian Mackerel fishery in order to maintain the stock. Catch-based Monte Carlo maximum sustainable yield (CMSY) method and Length-based Bayesian Biomass (LBB) methods are frequently used to evaluate fish stock. Eighteen years effort-catch and length frequency data from commercial fishing were utilize to estimate the current biomass. The calculated biological reference points from Bayesian state-space Schaefer production model (BSM) at <i>r</i> = 0.618, k = 68,700, maximum sustainable yield (MSY) = 10,600. However, CMSY at <i>r</i> = 0.662, k = 6800, MSY = 11,200. Biomass in 2021 at maximum sustainable yield 2021 (B<sub>2021</sub>/B<sub>MSY</sub>) = 0.436 (< 1) and fishing rate F<sub>2021</sub>/F<sub>MSY</sub> = 1.94 (> 1) values explain the Indian Mackerel fishery is at exploited state. However, results using LBB model defines as B/B<sub>MSY</sub> = 0.65 (< 1.0) and fishing rate F/F<sub>MSY</sub> = 3.33 (> 1.0) and mean length/optimum length (<b><i>L</i></b><sub><b><i>mean</i></b></sub><b><i>/ L</i></b><sub><b><i>opt</i></b></sub>) obtained at 1.3 and <b><i>L</i></b><sub><b><i>95th</i></b></sub><b><i>/ L</i></b><sub><b><i>inf</i></b></sub> at 0.95. Based on suggested prior biomass range (B/B<sub>MSY</sub> =0.5–0.8) for stock assessment also indicates that the Indian Mackerel fishery is in unsustainable state from the study area. Monitoring of illicit fishing practices in the area is recommended. Measures need to be implemented for the protection of these valuable resources.</p>","PeriodicalId":48909,"journal":{"name":"Journal of Coastal Conservation","volume":"100 1","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Small in scale big in contribution: evaluating the stock status of indian mackerel (Rastrelliger anagurta) fishery using cmsy and lbb approaches from pakistan, northern arabian sea\",\"authors\":\"Muhsan Ali Kalhoro, Lixin Zhu, Jeong Ha Kim, Xiaoyong Liu, Chunli Liu, Zhenlin Liang\",\"doi\":\"10.1007/s11852-024-01068-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Overfishing remains a global concern, however effective management from well valuation of fisheries may efficiently reduce the impact of fishing. Therefore, it is important to evaluate the biomass of Indian Mackerel fishery in order to maintain the stock. Catch-based Monte Carlo maximum sustainable yield (CMSY) method and Length-based Bayesian Biomass (LBB) methods are frequently used to evaluate fish stock. Eighteen years effort-catch and length frequency data from commercial fishing were utilize to estimate the current biomass. The calculated biological reference points from Bayesian state-space Schaefer production model (BSM) at <i>r</i> = 0.618, k = 68,700, maximum sustainable yield (MSY) = 10,600. However, CMSY at <i>r</i> = 0.662, k = 6800, MSY = 11,200. Biomass in 2021 at maximum sustainable yield 2021 (B<sub>2021</sub>/B<sub>MSY</sub>) = 0.436 (< 1) and fishing rate F<sub>2021</sub>/F<sub>MSY</sub> = 1.94 (> 1) values explain the Indian Mackerel fishery is at exploited state. However, results using LBB model defines as B/B<sub>MSY</sub> = 0.65 (< 1.0) and fishing rate F/F<sub>MSY</sub> = 3.33 (> 1.0) and mean length/optimum length (<b><i>L</i></b><sub><b><i>mean</i></b></sub><b><i>/ L</i></b><sub><b><i>opt</i></b></sub>) obtained at 1.3 and <b><i>L</i></b><sub><b><i>95th</i></b></sub><b><i>/ L</i></b><sub><b><i>inf</i></b></sub> at 0.95. Based on suggested prior biomass range (B/B<sub>MSY</sub> =0.5–0.8) for stock assessment also indicates that the Indian Mackerel fishery is in unsustainable state from the study area. Monitoring of illicit fishing practices in the area is recommended. Measures need to be implemented for the protection of these valuable resources.</p>\",\"PeriodicalId\":48909,\"journal\":{\"name\":\"Journal of Coastal Conservation\",\"volume\":\"100 1\",\"pages\":\"\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Coastal Conservation\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1007/s11852-024-01068-9\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Coastal Conservation","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s11852-024-01068-9","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Small in scale big in contribution: evaluating the stock status of indian mackerel (Rastrelliger anagurta) fishery using cmsy and lbb approaches from pakistan, northern arabian sea
Overfishing remains a global concern, however effective management from well valuation of fisheries may efficiently reduce the impact of fishing. Therefore, it is important to evaluate the biomass of Indian Mackerel fishery in order to maintain the stock. Catch-based Monte Carlo maximum sustainable yield (CMSY) method and Length-based Bayesian Biomass (LBB) methods are frequently used to evaluate fish stock. Eighteen years effort-catch and length frequency data from commercial fishing were utilize to estimate the current biomass. The calculated biological reference points from Bayesian state-space Schaefer production model (BSM) at r = 0.618, k = 68,700, maximum sustainable yield (MSY) = 10,600. However, CMSY at r = 0.662, k = 6800, MSY = 11,200. Biomass in 2021 at maximum sustainable yield 2021 (B2021/BMSY) = 0.436 (< 1) and fishing rate F2021/FMSY = 1.94 (> 1) values explain the Indian Mackerel fishery is at exploited state. However, results using LBB model defines as B/BMSY = 0.65 (< 1.0) and fishing rate F/FMSY = 3.33 (> 1.0) and mean length/optimum length (Lmean/ Lopt) obtained at 1.3 and L95th/ Linf at 0.95. Based on suggested prior biomass range (B/BMSY =0.5–0.8) for stock assessment also indicates that the Indian Mackerel fishery is in unsustainable state from the study area. Monitoring of illicit fishing practices in the area is recommended. Measures need to be implemented for the protection of these valuable resources.
期刊介绍:
The Journal of Coastal Conservation is a scientific journal for the dissemination of both theoretical and applied research on integrated and sustainable management of the terrestrial, coastal and marine environmental interface.
A thorough understanding of both the physical and the human sciences is important to the study of the spatial patterns and processes observed in terrestrial, coastal and marine systems set in the context of past, present and future social and economic developments. This includes multidisciplinary and integrated knowledge and understanding of: physical geography, coastal geomorphology, sediment dynamics, hydrodynamics, soil science, hydrology, plant and animal ecology, vegetation science, biogeography, landscape ecology, recreation and tourism studies, urban and human ecology, coastal engineering and spatial planning, coastal zone management, and marine resource management.