唇1龄鱼和2龄鱼形态特征参数及其相关性比较分析  

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

作　　者：吕耀平[1] 

机构地区：[1]丽水学院化学与生命科学学院

出　　处：《上海水产大学学报》2008年第2期170-174,共5页Journal of Shanghai Fisheries University

基　　金：浙江省自然基金项目(Y307445);浙江省科技厅新苗人才计划项目(2007R40G2260026);浙江省教育厅项目(20070552);浙江省丽水市科技局项目(2007kjh2005)

摘　　要：对瓯江野生唇(Hem ibarbus labeo)1龄幼鱼与2龄成鱼21个形态特征参数测量分析后发现:不考虑体长的影响,相比1龄幼鱼,2龄成鱼的头宽、胸鳍长及尾鳍长这3个参数存在较大的变异(P<0.05)。分别分析1龄幼鱼与2龄成鱼形态特征参数与体长的相关关系,发现1龄幼鱼与体长显著相关的参数有12个,而2龄成鱼与体长显著相关的参数只有8个(P<0.01);进而控制体长的影响,分别分析这12个参数之间的偏相关关系,可以发现,相比2龄鱼,1龄鱼的各参数间存在更多的偏相关性。综合参数间的相关性,可以发现无论对于1龄幼鱼还是2龄成鱼,头长、头高、眼间距、尾柄长、体重、背鳍长这6个参数不仅与体长存在显著相关关系,而且与其它与体长显著相关的参数间也存在显著相关关系,其变异的可能性较低。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 （P 〈 0.05 ）. 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.

关 键 词：唇[鱼骨] 身体形态特征参数 相关性 变异性 

分 类 号：S931.1[农业科学—渔业资源]