摘要
为了预测大鲵的生长发育与良种选育,对1~5龄大鲵(Andrias davidianus)的体重和10种形态性状进行了6次测量,并对大鲵的体重与形态性状进行了相关分析,构建并筛选出大鲵的生长模型,获得大鲵月龄与形态指标的线性回归方程。结果显示:与大鲵体重密切相关的形态性状依次是头宽、头长、尾宽、尾高、前肢长、后肢长、全长、尾长、腋至胯距、体高等,它们可作为大鲵良种选育的重要指标。Logistic模型作为大鲵生长模型的拟合效果最好:Wt=4.449/(1+4 689.334e-0.19t)。大鲵月龄与主要形态性状的线性回归方程为M=-3.332+0.847T1+0.424T2-0.418S+3.259 H-6.745T3,它可作为鉴定大鲵年龄的方法之一。
The purpose of the experiment is to predict the growth and development of Chinese giant salamander, Andrias davidianus, and guide the breeding of Chinese giant salamander. Six measurements of body weight and 10 morphological traits were performed in Chinese giant salamander during 1~5 years old. The weight and morphological traits of Chinese giant salamander were analyzed, and the growth model of Chinese giant salamander was constructed and screened, the linear regression equation of age and main morphological traits of Chinese giant salamander was obtained. The results showed that correlation coefficients between morphological traits and body weight the order is head width, head length, tail width, tail height, length of foreleg, length of hind leg, total length, tail length, space between axilla and groin, body height of Chinese giant salamander. Those morphological traits can be used as an important indicators of the breeding of Chinese giant salamander. Logistic model is the best growth model in three kinds of growth model for Chinese giant salamander： Wt -= 4. 449/（1 ＋ 4 689. 334e^-0.19t ）, The linear regression equation of months of age and main morphological traits of Chinese giant salamander is M=-3. 332＋0. 847T1＋0. 424T2-0. 418S＋3. 259H-6. 745T3. The equation can be used as a method to identify the age of Chinese giant salamander.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第2期81-87,共7页
Journal of Shaanxi Normal University：Natural Science Edition
基金
农业部农业技术服务创新项目(农财发[2013]111号)
关键词
大鲵
形态性状
生长模型
年龄鉴定
Chinese giant salamander Andrias davidianus
morphological traits
growth mode
age determination
