东海北部葛氏长臂虾生长死亡参数及资源量、渔获量的分析  

Estimation of Biological Parameter,Biomass,and Yield for Palaemon gravieri in the Northern Area of East China Sea

作　　者：贺舟挺[1] 徐开达[1] 薛利建[1] 宋海棠[1] 

机构地区：[1]浙江海洋学院海洋与渔业研究所,浙江省海洋水产研究所,浙江舟山316100

出　　处：《浙江海洋学院学报（自然科学版）》2009年第3期286-291,共6页Journal of Zhejiang Ocean University(Natural Science Edition)

基　　金：国家科技支撑计划项目(2007BAD43B01);浙江省科研院所研究开发项目(2006F13001)

摘　　要：2006-2008年间,对东海北部葛氏长臂虾进行分月取样测定,得到该群体的体长组成范围为22～78 mm,其中40～60 mm的个体占绝对优势,占总数的70.45%。应用FiSATⅡ统计软件对葛氏长臂虾每月的体长资料进行分析,结果表明:生长参数K=1.1,极限体长L∞=80.45 mm,自然死亡系数M=2.04,总死亡系数Z=4.93,利用率E=58.59%,平均选择体长为51.39 mm。通过对单位补充量产量、资源量、渔获产量和产值分析表明,单就葛氏长臂虾群体的利用来看,该群体还未达到充分利用水平,应再稍微提高捕捞努力量,但葛氏长臂虾是小型虾类,考虑到其它大型虾类的捕捞规格,笔者认为,对葛氏长臂虾资源的利用,已达到充分利用水平。Based on the monthly length-frequency data obtained from the northern area of East China Sea during the periods of 2006 to 2008, the biomass, yield, and value were studied. The body length of the sample group ranged from 22 mm to 78 mm, the dominant length group was 40 mm to 60 mm, which was 70.45% of the total. The analysis of the Palaemon gravieri body length monthly data using FiSAT Ⅱ compute program, the ruslts were as follows： the growth rate constant K=1.1 year^-1; the asymptotic length L∞=80.45 mm; the natural mortality coefficient M=2.04 year^-1; the total mortality coefficient Z=4.93 year^-1; the exploitation rate, E=58.59%; and mean selection length Lc=51.39 mm. Yield＇per-recruit, biomass, yield, and the value of Yield analysis indicated that single-Palaemon gravieri groups on the use of perspective, the group had not yet reached the full level, should be a little effort to improve fishing, but Palaemon gravieri was small shrimp species, taking the capture standards of the other large shrimp into account, the paper believes that the use of Palaemon gravieri resources has reached the level of full use. The stock of Palaemon grav/er/had been fully exploited.

关 键 词：东海 葛氏长臂虾 生物学参数 资源量 

分 类 号：S932.51[农业科学—渔业资源]