摘要
:在巢材湿度保持相同下 ,采用 2 9℃、31℃和 33℃ 3种温度对扬子鳄 (Alligatorsinensis)卵进行孵化。孵化时间随孵化温度升高而显著缩短 ,2 9℃、31℃和 33℃下的平均孵化时间为 6 4 6天、5 5 4天和 5 0 1天 ,孵化的积温没有恒定值。初生仔鳄重与起始卵重呈直线回归 ,初生仔鳄重不受孵化温度明显影响。孵化温度对初生仔鳄剩余卵黄量或去卵黄鳄体有显著影响 :随着孵化温度的升高 ,剩余卵黄量呈现增加 ,而去卵黄鳄体重相对减少 ,它们的变化量与温度增减量呈相同比例变化。
Eggs of Alligator sinensis were incubated in t hre e constant temperatures of 29℃,31℃ and 33℃,respectively,being kept the same hum idity of their nest materials Incubation time which was shortened markedly in c o mpany with the rise of incubation temperature was 64 6 d at 29℃,55 4 d at 31 ℃ and 50 1 d at 33℃ on the average Accumulated temperatures of eggs incubated in different temperatures hadnt a stable value Initial hatchling masses present e d the linear regress according to initial egg masses,and werent influenced sig nificantly by incubation temperature Incubation temperature significantly influ e nced residual yolk masses in hatchling as well as yolk- free hatchling:residual yolk masses increased and by contraries yolk- free hatchling decreased in compa ny with the rise of incubation temperature,residual yolk masses and yolk- free h atchling masses changed in the same ratio corresponding to change of incubation temperature Temperature influences significantly development of eggs and organi zation of hatchlings in Alligator sinensis
出处
《四川动物》
CSCD
2000年第3期167-170,共4页
Sichuan Journal of Zoology
关键词
扬子鳄
温度
卵发育
仔鳄组成
Alligator sinensis
Temperature
Development of e ggs
Residual yolk
