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《Oceanologia Et Limnologia Sinica》 2010-04
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EFFECT OF PHENOTYPIC MORPHOMETRIC TRAIT ON BODY WEIGHT AND SOFT-TISSUE WEIGHT OF NEVERITA DIDYMA

SUN Zhen-Xing,CHANG Lin-Rui,XU Jian-Peng(College of Life Science,Ludong University,Yantai,264025)  
Effect of phenotypic morphometric trait on body weight and soft-tissue weight of Neverita didyma was studied in correlation and path analysis.A hundred of two-year-old individuals were randomly sampled,from which eight traits were measured including shell width,shell height,height between apex and callus,body height,operculum length,operculum width,body weight,and soft-tissue weight.The correlation coefficients among the eight traits were calculated;and phenotypic traits were used as independent variables and body weight,and soft-tissue weight as dependent ones for path analysis.The results show that all the correlation coefficients between each phenotypic trait and body weight or soft-tissue weight are at extremely significant level(P0.01).The shell width is the key effective factors.Direct selection of shell width is effective for increasing body weight and soft-tissue weight of Neverita didyma,followed by the heights between apex and callus,and operculum width and body height come the second.
【Fund】: 山东省教育厅高校实验技术研究项目 2005-396号;; 鲁东大学学科建设经费资助项目 2009—2012
【CateGory Index】: S917.4
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