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Comparisons of morphological characters in Hemibarbus labeo of 1-2 year-old and their correlations

LV Yao-ping(1.College of Chemistry and Life Sciences,Lishui University,Lishui 323000,China;2.College of Animal Science,Zhejiang University,Hangzhou 310029,China)  
21 morphological characters of one-year and two-year Hemibarbus labeo were measured respectively in this work.Compared to one-year fish,there were significant variations in length,pectoral fin length and caudal fin length in two-year fish(P0.05).Analyzing the correlation of morphological characters and body length,it was demonstrated that 12 morphological characters significantly correlated with body length in one-year fish,whereas only 8 morphological characters in two-year fish.The partial correlations of the 12 morphological characters were also analyzed which demonstrated that there were more significant partial correlations between 12 morphological characters in one-year fish.Above all,the 6 morphological characters of body length,head depth,interorbital width,caudal peduncle length,dorsal fin length,body mass not only significantly correlated with body length but also significantly partially correlated with other morphological characters both in one-year and two-year Hemibarbus labeo which demonstrated that they had less variation possibility.
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