基于长度贝叶斯生物量估算法的北部湾带鱼资源评估  

Assessment of Trichiurus haumela stocks in the Beibu Gulf based on length-based Bayesian biomass estimation method

作　　者：张曼 王雪辉[2] 王淼娣 杜飞雁[2] 孙典荣[2] 王亮根[2] 王跃中[2] 许柳雄[1] 邱永松[2] Zhang Man;Wang Xuehui;Wang Miaodi;Du Feiyan;Sun Dianrong;Wang Lianggen;Wang Yuezhong;Xu Liuxiong;Qiu Yongsong(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Guangdong Provincial Key Laboratory of Fishery Ecology and Environment/Key Laboratory of Open-Sea Fishery Development,Ministry of Agriculture and Rural Affairs,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,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省渔业生态环境重点实验室/农业农村部外海渔业开发重点实验室,广东广州510300

出　　处：《海洋学报》2022年第1期11-21,共11页

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(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资金(2021SD14);中越北部湾共同渔区联合调查。

摘　　要：带鱼是南海西北部北部湾主要经济鱼类种群之一,估算其种群参数和评估其资源状况对北部湾渔业资源管理具有重要意义。本文利用2006−2016年北部湾带鱼(Trichiurus haumela)的生物学数据,通过长度贝叶斯生物量估算法(Length-based Bayesian Biomass Estimation Method,LBB)估算带鱼的渐近肛长(L_(inf))、最适开捕肛长(Lc_opt)、相对自然死亡率(M/k)、相对捕捞死亡率(F/k)、捕捞强度(F/M)和开发率(E),并评估其资源状况(相对现存生物量,B/B_(0))。带鱼的Linf为44.4 cm,L_(c_opt)均值为28.5 cm,M/k和F/k均值分别为1.32、2.76,F/M为2.20,E为0.67,B/B_(0)均值为0.16。经逻辑斯蒂曲线拟合,带鱼的平均最小性成熟肛长为28.63 cm。研究表明,当前北部湾带鱼处于过度开发的状态,现存资源量较低,群体结构简单,呈小型化。Trichiurus haumela is one of the major commercial fish populations in the Beibu Gulf of the northwestern South China Sea.It is of great significance to estimate population parameters and assess the stock status of T.haumela for the fishery management in the Beibu Gulf.Based on the biological data of T.haumela collected in the Beibu Gulf from 2006 to 2016,the asymptotic length(L_(inf)),the optimal length-at-first-capture(Lc_opt),relative mortality(M/k and F/k),exploitation rate(E),and relative biomass(B/B_(0))are estimated using the length-based Bayesian biomass estimation method(LBB).The results show that the Linf is 44.4 cm,the mean of Lc_opt is 28.5 cm,the mean of M/k and F/k are 1.32 and 2.76,the F/M is 2.20 and the E and B/B0 are 0.67 and 0.16,respectively.The anal length of the first gonadal maturation(L50%)is 28.63 cm fitted by Logistic models.The results show that the current stock of T.haumela in the Beibu Gulf is over-exploited,the extant biomass is relatively low,the length-frequency tendes to simplification and miniaturization.

关 键 词：数据受限 长度贝叶斯生物量估算法 资源状况 种群参数 带鱼 北部湾 

分 类 号：S932.4[农业科学—渔业资源]