文章摘要
李勇.三水系中华绒螯蟹幼蟹形态判别程序的建立和使用[J].水产学报,2001,25(2):
三水系中华绒螯蟹幼蟹形态判别程序的建立和使用
Establishment and application of morphological discrimination modelfor juveniles Eriocheir sinensisfrom Liaohe, Yangtze and Oujiang rivers
投稿时间:2014-04-15  修订日期:2014-04-15
DOI:
中文关键词: 中华绒螯蟹 幼蟹 形态判别 辽河 长江 瓯江
英文关键词: Eriocheir sinensis , juvenile crab  morphological discrimination, Liaohe river, Yangtze river, Oujiang river
基金项目:国家科技攻关项目
作者单位地址
李勇 上海水产大学农业部水产增养殖生态、生理重点开放实验室!上海200090 上海水产大学农业部水产增养殖生态、生理重点开放实验室!上海200090
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中文摘要:
      以中华绒螯蟹幼蟹为研究对象,每只幼蟹分别测量30个形态性状参数,用聚类分析和逐步判别两种方法进行综合处理和比较分析.(1)聚类分析结果表明:长江、瓯江幼蟹形态相近,而辽河幼蟹与上述两者的形态差异较大;(2)用逐步判别筛选出的14个形态参数的判别分析表明:三个种群间的形态差异极显著(P<0.01),判别准确率为:81.4%~88.4%(P1)和82.5%~91.4%(P2),判别效果依次为辽河蟹>瓯江蟹>长江蟹,平均拟合概率为85.5%;(3)进一步用上述14个形态参数中对判别分析贡献较大的9个形态参数作判别分析,构建了种群判别公式,平均拟合概率虽降至80.4%,但可减少测定和计算工作量的36%,比较实用.
英文摘要:
      This paper studies on juvenile crab. 30 metric parameters representing morphological characters were measured and then analyzed comprehensively by the cluster analysis and the stepwise discrimination. (1) The results of cluster analysis shows : The morphology of juvenile Chinese mitten crab from Yangtze river is much similar to that from Oujiang river , but quite different from that of Liaohe river’s. (2) The result of stepwise discrimination based on 14 morphological parameters shows there is a significant difference among the populations ofjuvenilecrabfromthreerivers (P<0.01),thecorrectratesofdiscriminationare: 81.4%~88.4% (P1) and 82. 5% ~ 91. 4 % ( P2) . The discriminating efficiency is Liaohe > Oujiang > Yangtze. The average fitted probability is 85. 5 %. (3) The discriminant analysis , based on further selected 9 morphological parameters , with better contributions to the identification , give less average fitted probability -80. 4 % , but decrease the work amount in measurement and calculation significantly (36 %) , which is highly recommended to application in juvenile crab study.
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