摘要
以随机选取的500条宽体金线蛭为样本,运用SPSS 13.0软件包中的双变量相关性分析(Bivari-ate)程序对宽体金线蛭种蛭体重、产卵茧量、卵茧重、出苗量等4个繁殖指标作统计分析。在对宽体金线蛭种蛭体重与产卵茧量、卵茧重、出苗量的两两相关性分析中得出:宽体金线蛭种蛭体重与产卵茧量、卵茧重、出苗量相关系数分别为0.8697、0.9351、0.6972,均呈极显著正相关;产卵茧量与卵茧重相关系数为-0.563,呈极显著负相关;卵茧重与出苗量、产卵茧量与出苗量之间的相关系数分别为0.8172、0.4873,均呈正相关。20～30 g种蛭平均产卵茧量、平均卵茧重、平均出苗量分别为2.78个、2.24 g、32.48条,为最适种蛭。
The number of 500 Whitmania pigras were chose as samples randomly. We made a statistical analy- sis on 4 traits of Whitmania pigras including body weight, cocoon weight, cocoon number, emergence rate by using SPSS 13 software package in the bivariate correlation analysis （Bivariate） program. By the correlation a- nalysising between Whitmania pigras body weight, cocoon weight, cocoon number and emergence percentage, we found that the correlation coefficients were 0. 8697, 0.9351and 0. 6972, respectively, showed a highly sig- nificant positive correlation. The correlation coefficient between the number of cocoon and egg cocoon weight was - 0. 563, showing highly significant negative correlation. At the same time, the correlation coefficient be- tween the egg cocoon weight and cocoon seedling number, the number of egg cocoon and cocoon seedling num- ber were 0.8172, 0.4873, respectively, both showing positively related. The average fecundity, average egg weight, average seedling number of 20-30 g Whitmania pigra which was the most suitable provenances were 2.78 individual, 2.24 g and 32.48g, respectively.
出处
《福建水产》
2012年第6期488-492,共5页
Journal of Fujian Fisheries
基金
江苏省农业科技自主创新[编号:CX(10)217]
关键词
宽体金线蛭
体重
卵茧
出苗量
Whitmania pigra
body weight
egg cocoon
hatch number
