基于LBB方法估算北部湾竹䇲鱼种群参数  

Estimation of the population parameters of Trachurus japonicus in the Beibu Gulf based on the LBB method

作　　者：王淼娣 王雪辉[2,3] 杜飞雁 孙典荣[2,3] 王跃中 陈新军[1] 邱永松 WANG Miaodi;WANG Xuehui;DU Feiyan;SUN Dianrong;WANG Yuezhong;CHEN Xinjun;QIU Yongsong(College ofMarine Sciences,Shanghai Ocean University,Shanghai 201306,China;South China Sea Fisheries Research Institute,Chinese Academy ofFishery Sciences,Guangzhou 510300,Guangdong,China;Key Laboratory ofOpen-Sea Fishery Development,Ministry ofAgriculture and Rural Affairs,Guangzhou 510300,Guangdong,China;Guangdong Provincial Key Laboratory ofFishery Ecology and Environment,Guangzhou 510300,Guangdong,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]中国水产科学研究院南海水产研究所,广东广州510300 [3]农业农村部外海渔业开发重点实验室,广东广州510300 [4]广东省渔业生态环境重点实验室,广东广州510300

出　　处：《上海海洋大学学报》2022年第1期212-222,共11页Journal of Shanghai Ocean University

基　　金：国家科技基础资源调查专项(2017FY201405,2018FY100105);中国水产科学研究院基本科研业务费项目(2019HY-JC0203,2019GH02);中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项(2021 SD14)。

摘　　要：为探究北部湾竹䇲鱼(Trachurus japonicus)不同组距的划分对其种群参数和资源评估的影响,利用2006—2018年北部湾竹䇲鱼叉长数据重构长度频率,通过逻辑斯蒂曲线拟合和长度贝叶斯生物量估算(length-based Bayesian biomass estimation method,LBB)方法,估算竹䇲鱼的初次性成熟叉长(L_(50))、渐进叉长(L_(∞))、相对自然死亡率(M/k)、相对捕捞死亡率(F/k)、相对总死亡率(Z/k)、最适开捕叉长(L_(c_opt))、开发率(E)和相对生物量(B/B_(0))等种群参数。分析在不同组距情况下种群参数的差异。结果表明:初次性成熟叉长范围为157~162 mm;北部湾竹䇲鱼种群参数平均值分别为L_(∞)=248 mm、M/k=1.38、F/k=6.92、Z/k=8.28和L_(c_opt)=156 mm;北部湾竹䇲鱼相对生物量B/B_(0)低于0.5,E大于0.5;不同组距重构长度频率估算的种群参数结果有差异,且随组距的增大波动较为明显。研究表明,竹䇲鱼生物量相对低且处于过度开发状态,建议今后以样本数量、长度组成和生物特性共同确定某种鱼类长度分组组距。In order to explore the influence of the division of different intervals of Trachurus japonicuson on its population parameters and stock assessment,the length frequency with the data of the fork length of T.japonicus in the Beibu Gulf from 2006 to 2018 was reconstructed,and logistic curve fitting and length Bayesian biomass estimation method(LBB)were used to estimate the first sexual maturity fork length(L_(50)),asymptotic fork length(L_(∞)),relative natural mortality(M/k),relative fishing mortality(F/k),total mortality(Z/k),optimal fork length-at-first-capture(L_(c_opt)),exploitation rate(E)and other population parameters.The differences in population parameters under different intervals.The results show:The fork length of first sexual maturity ranges from 157 mm to162 mm;The average values of L_(∞),M/k,F/k,Z/k,and L_(c_opt) of T.japonicusin intervals length are 248 mm,1.38,6.92,8.28,and 156 mm,respectively;The relative biomass B/B_(0) is less than 0.5,and E is greater than 0.5;The results of population parameters estimated by reconstruction length frequency of intervals are different,and the fluctuations are more obvious with the increase of intervals.Studies have shown that the biomass of T.japonicus is relatively low and is in an over-exploited state.At the same time,it is recommended to determine the length of a certain fish interval based on the number of samples,length composition and biological characteristics.

关 键 词：竹䇲鱼 北部湾 组距 长度贝叶斯生物量估算法 长度频率 种群参数 

分 类 号：S931[农业科学—渔业资源]