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中西太平洋鲣鱼的年龄鉴定和生长特性
引用本文:王学昉,许柳雄,朱国平,王春雷.中西太平洋鲣鱼的年龄鉴定和生长特性[J].应用生态学报,2010,21(3):756-762.
作者姓名:王学昉  许柳雄  朱国平  王春雷
作者单位:1.上海海洋大学海洋科学学院, 上海 201306,;2.大洋渔业资源可持续开发省部共建教育部重点实验室, 上海 201306,;3.大洋生物资源开发和利用上海市高校重点实验室, 上海 201306,;4.江苏渔港监督局, 江苏南通 226006
基金项目:上海市科委重点科技攻关计划项目,大洋渔业资源可持续开发省部共建教育部重点实验室开放基金
摘    要:鱼类的年龄和生长等生物学参数对于准确评估渔业资源非常重要.本文于2007年10月至2008年1月,利用围网渔船在中西太平洋海域采集了262尾鲣鱼样本,现场测定其叉长(278~746 mm)和体质量(345~9905 g),并搜集第一背鳍鳍棘用于鉴定其年龄和生长状况.结果表明:鲣鱼叉长(L, mm)与体质量(M,g)的关系式为M=3.612×10-6L3. 278 (R2=0.9782),性别对其影响不显著(F=2.002,P>0.05);经赤池信息量标准(AIC)评估,在幂函数、线性及指数3种回归关系中,线性回归模型最好地拟合了鲣鱼叉长与鳍棘截面半径之间的关系(AIC=2257.4);采用Fraser-Lee法求得的鲣鱼1~5龄平均逆算叉长分别为398.4、494.2、555.4、636.8和728.8 mm;经残差平方和分析,雌雄鲣鱼的生长状况间不存在显著性差异(F=0.670;df=182;P>0.05),推得鲣鱼von Bertalanffy生长方程为Lt=706.51(1-e-0.64(t+0.037)).

关 键 词:中西太平洋  围网  鲣鱼  年龄  生长  背鳍鳍棘  白菜型油菜    冬油菜    安全越冬    区域    经济效益  

Age identification and growth characteristics of Katsuwonus pelamis in western and central Pacific Ocean
WANG Xue-fang,XU Liu-xiong,ZHU Guo-ping,WANG Chun-lei.Age identification and growth characteristics of Katsuwonus pelamis in western and central Pacific Ocean[J].Chinese Journal of Applied Ecology,2010,21(3):756-762.
Authors:WANG Xue-fang  XU Liu-xiong  ZHU Guo-ping  WANG Chun-lei
Institution:1.College of Marine Sciences, Shanghai Ocean University, Shanghai 201306,China|;2.Ministry of Education Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai 201306, China|;3.Shanghai Higher Education Commission Key Laboratory of |Oceanic Fisheries Resources Exploitation, Shanghai 201306, China|;4.Jiangsu Fishing Harbor Superintend Bureau, Nantong 226006, Jiangsu, China
Abstract:Fish age and growth are the important biological parameters for the assessment of fishery resources.With the help of purse seiners,262 individuals of skipjack tuna(Katsuwonus pelamis)were sampled from western and central Pacific Ocean in October 2007-January 2008.The measurements in situ showed that the fork length of the samples ranged from 278 to 746 mm,and their body mass ranged from 345 to 9905 g.The first dorsal spine of each individual was collected for age identification and growth parameters estimation.The relationship between fork length(L,mm)and body mass(M,g)was expressed as M = 3.612 × 10~(-6)L~(3.278)(R~2 = 0.9782),and no significant difference was found for the males and females(F =2.002,P >0.05).A comparison with Akaike information criterion(AIC)suggested that among power regression equation,linear regression equation,and exponential regression equation,linear regression equation was most suitable for describing the relationship between fork length and spine radius(AIC = 2257.4).The mean back-calculated fork lengths of K.pelamis with the ages of 1-5 estimated by Fraser-Lee' s method were398.4,494.2,555.4,636.8,and 728.8 mm,respectively.Residual analyses indicated that there was no significant difference in the growth of male and female K.pelamis(F = 0.670 ; df =182; P >0.05).The sex-combined von Bertalanffy growth equation of K.pelamis was L_t =706.51(1-e~(-0.64(t+0.037))).
Keywords:western and central Pacific Ocean  purse seine  Katsuwonus pelamis  age  growth  dorsal spine
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