| KALHORO Muhsan Ali,LIU Qun,MEMON Khadim Hussain,WARYANI Baradi,SOOMRO Shamsher Hyder. 2015. Maximum sustainable yield of Greater lizardfish Saurida tumbil fishery in Pakistan using the CEDA and ASPIC packages. Acta Oceanologica Sinica, 34(2):68－73 |
| Maximum sustainable yield of Greater lizardfish Saurida tumbil fishery in Pakistan using the CEDA and ASPIC packages |
| 应用CEDA和ASPIC软件包对巴基斯坦国的多齿蛇鲻(Saurida tumbil)渔业的最大持续产量的初步研究 |
| Received:October 09, 2013 Revised:March 30, 2014 |
| DOI：10.1007/s13131-014-0463-0 |
| Key words:Pakistan Sauridatumbil ASPIC CEDA MSY |
| 中文关键词: 巴基斯坦 多齿蛇鲻(Saurida tumbil) ASPIC CEDA 最大持续产量 |
| 基金项目:The Special Research Fund of Ocean University of China under contract No. 201022001. |
| Author Name | Affiliation | E-mail | | KALHORO Muhsan Ali | College of Fisheries, Ocean University of China, Qingdao 266003, China
Marine Fisheries Department, Fish Harbor West Wharf Karachi, Karachi 74000, Pakistan | | | LIU Qun | College of Fisheries, Ocean University of China, Qingdao 266003, China | qunliu@ouc.edu.cn | | MEMON Khadim Hussain | College of Fisheries, Ocean University of China, Qingdao 266003, China
Marine Fisheries Department, Fish Harbor West Wharf Karachi, Karachi 74000, Pakistan | | | WARYANI Baradi | Department of Freshwater Biology and Fisheries, University of Sindh, Jamshoro 76080, Pakistan | | | SOOMRO Shamsher Hyder | College of Fisheries, Ocean University of China, Qingdao 266003, China | |
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| Abstract: |
| The catch and effort data analysis (CEDA) and ASPIC (a stock assessment production model incorporating covariat-es) computer software packages were used to estimate the maximum sustainable yield (MSY) from the catch and effort data of Greater lizardfish Saurida tumbil fishery of Pakistan from 1986 to 2009. In CEDA three surplus produc-tion models of Fox, Schaefer and Pella-Tomlinson were used. Here initial proportion (IP) of 0.5 was used because the starting catch was roughly 50% of the maximum catch. With IP= 0.5, the estimated MSY from Fox model were 20.59 mt and 38.16 mt for normal and log-normal error assumptions, while the MSY from Schaefer and Pella-Tomlinson were 60.40, 60.40 and 60.40 mt, for normal, log-normal and gamma error assumptions respectively. The MSY values from Schaefer and Pella-Tomlinson models of three error assumptions were the same. The R2 values from those three models were above 0.6. When IP= 0.5, the MSY values estimated from ASPIC from Fox were 132 mt, and from logistic model were 69.4 mt, with R2 value above 0.8. Therefore we suggest the MSY of S. tumbil fishery from Pakistan to be 60-70 mt, which is higher than the latest catch, thus we would recommend that the fishing efforts for this fishery may be kept at the current level. |
| 中文摘要: |
| 本文应用CEDA(catch and effort data analysis)和ASPIC(a stock assessment production model incorporating covariates)计算机软件包对巴基斯坦国的多齿蛇鲻(Saurida tumbil)渔业的最大持续产量(MSY)的进行了研究,所使用的产量和捕捞努力量数据为1986-2009.CEDA包括了三个剩余产量模型(Fox, Schaefer and Pella-Tomlinson).因为初始产量大约是最大产量的50%,所以初始比例(IP,initial proportion)设为0.5.当IP=0.5,对于正态和对数正态误差分布,Fox模型估计的MSY分别为20.59mt和38.16mt;对于正态、对数正态和伽马误差分布,Schaefer和Pella-Tomlinson模型估计的MSY分别为60.40、60.40和60.40mt.对于三个误差假设Schaefer和Pella-Tomlinson模型估计的MSY相同.这三个模型估计的R2均高于0.6.当IP=0.5,对于Fox模型ASPIC估计的MSY值为132mt,对于logistic模型为69.4mt,其R2值均高于0.8.于是我们建议巴基斯坦国的多齿蛇鲻(S. tumbil)渔业的最大持续产量为60-70mt,这高于最近的产量.所以我们建议这个渔业的捕捞努力量应该维持在目前水平. |
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