基于长度贝叶斯生物量估算法评估北部湾大头白姑鱼资源状况  

Assessment of Pennahia macrocephalus stock in Beibu Gulf by length Bayesian biomass estimation method

作　　者：王淼娣 王雪辉[2] 孙典荣[2] 王跃中[2] 陈新军[1] 杜飞雁[2] 邱永松[2] WANG Miaodi;WANG Xuehui;SUN Dianrong;WANG Yuezhong;CHEN Xinjun;DU Feiyan;QIU Yongsong(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences/Guangdong Provincial Key Laboratory of Fishery Ecology and Environment/Key Laboratory of Open-Sea Fishery Development,Ministry of Agriculture and Rural Affairs,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：《南方水产科学》2021年第2期20-27,共8页South China Fisheries Science

基　　金：国家科技基础资源调查专项(2017FY201405,218FY100105);中国水产科学研究院基本科研业务费项目(2019HY-JC0203,2019GH02);中越北部湾共同渔区联合调查资助。

摘　　要：大头白姑鱼(Pennahia macrocephalus)是北部湾主要经济鱼类种群之一,研究其资源状况对北部湾渔业资源的可持续利用具有重要意义。该研究基于2006—2014年北部湾大头白姑鱼生物学数据,通过长度贝叶斯生物量估算法(Length-based Bayesian biomass estimation method,LBB)估算大头白姑鱼的渐进体长(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)、最适开捕体长(L_(c_opt))、开发率(E)和相对生物量开发指标(B/B0)。结果表明,2006—2014年北部湾大头白姑鱼的平均L_(∞)为265 mm,平均L_(c_opt)为157 mm,M/k、F/k和Z/k分别为1.39、3.58和4.96;L_(c_opt)呈上升趋势,而L_(∞)呈下降趋势。目前大头白姑鱼E较高(0.58),B/B0小于0.5,表明当前北部湾大头白姑鱼资源处于过度开发状态。Pennahia macrocephalus,one of the major commercial fishes in the Beibu Gulf,is of great significance to study its stocks status.Based on the biological data of P.macrocephalus collected in the Beibu Gulf from 2006 to 2014,we estimated the asymptotic body length(L_(∞)),relative natural mortality(M/k),relative fishing mortality(F/k),relative total mortality(Z/k),optimal body length-at-first-capture(L_(c_opt)),exploitation rate(E)and relative biomass index(B/B0)by the length-based Bayesian biomass estimation method(LBB).Results show that the average L_(∞)and L_(c_opt)were 265 mm and 157 mm,respectively,and the relative mortality rates of M/k,F/k and Z/k were 1.39,3.58 and 4.96,respectively.The L_(c_opt)of P.macrocephalus showed an increasing trend while the L_(∞)showed a decreasing trend.At present,the E of P.macrocephalus is relatively high(0.58),indicating the resources have been in the state of overexploited.The B/B0 is less than 0.5,indicating the overexploitation of current stocks.

关 键 词：大头白姑鱼 种群参数 数据有限 长度频率 长度贝叶斯生物量估算法 北部湾 

分 类 号：S931.1[农业科学—渔业资源]