东黄海鲐鱼形态差异分析  

Morphological variations and discriminant analysis of Scomber japonicus and Scomber australasicus in the Yellow Sea and East China Sea

作　　者：邵锋[1] 陈新军[1] 李纲[1] 钱卫国[1] 

机构地区：[1]上海水产大学海洋学院,上海200090

出　　处：《上海水产大学学报》2008年第2期204-209,共6页Journal of Shanghai Fisheries University

基　　金：国家科技支撑计划(2006BADO9A05);教育部新世纪优秀人才计划(NCET-06-0437);上海市捕捞学重点学科(T1101)资助

摘　　要：应用4种数理统计方法，采用19个形态比例性状，对东黄海鲐鱼（包括日本鲐的五岛西部种群和东海西部种群，澳洲鲐）3个群体形态差异进行研究。差异系数（cD）检验证实，日本鲐的五岛西部与东海西部2个种群形态上尚未达到亚种差异水平。均数差异系数表明，日本鲐的五岛西部和东海西部种群间比例性状差异显著有FL／BL，SPL1／BL，ED／BL，D2-4／BL，D2-5／BL，D3-5／BL，D4-7／BL，D6-7／BL等8个参数（P〈0．05），日本鲐与澳洲鲐间有FL/BL，SPL1／BL，D1—3／BL，D2—3／BL，D2-4／BL，D2-5／BL，D3-4／BL，D3-5／BL，D4-5／BL，134—6／BL，D4-7／BL，D5-6／BL，D5-7／BL，D6-7／BL等14个参数（P〈0．05）。主成分分析构建了四个主成分，其累计贡献率为67．09％。建立了日本鲐的五岛西部与东海西部以及澳洲鲐3群体的判别函数，判别准确率P1为70．0％～85．0％，判别准确率只为72．4％～82．3％，综合判别率为78．6％。研究认为，可通过比例性状差异来判别3个群体的归属。Based on 19 morphological proportional characters of Scomber japonicus and S. australasicus, four multivariation analysis methods were used to comparably investigate the morphological variations among the three populations—— two populations of S. japonicus in the west of Goto islands and in the west of East China Sea, and one population of S. australasicus. The result of difference coefficient test showed that S. japonicas in the different areas have not yet reached the discriminant level of different subspecies. The result of the test of different coefficients on the average revealed that 8 morphological proportional characters（ FL/BL, SPL1/BL, ED/BL, D2-4/BL, D2-5/BL, D3-5/BL, D4-7/BL, D6-7/BL） were significant difference between the two populations of S. japonicus （ P 〈 0.05 ）, and 14 morphological proportional characters （ FL/BL, SPL1/BL, D1-3/BL, D2-3/BL, D2-4/BL, D2-5/BL, D3-4/BL, D3-5/BL, D4-5/BL, D4-6/BL, D4-7/BL, D5-6/BL, D5-7/BL, D6-7/BL） were significantly different between S.japonicus and S. australasicus（ P 〈 0.05 ）. In the prin-cipal component analysis, four principal components were constructed, and the cumulative contributory ratio was 67.09%. The discriminant functions of the three populations were established, and the discriminant accuracy ranged from 70.0% to 85.0% for P1, ranged from 72.4% to 82.3% for P2, and averaged at 78.6% for the total. All the results indicated that the attribution of three populations can be determinited by differences in proportional characters.

关 键 词：日本鲐 澳洲鲐 形态差异 东黄海 多元分析 

分 类 号：S932.4[农业科学—渔业资源]