摘要
作者经标记重捕调查,长沙岳麓山地区泽蛙生境中的平均密度为4597.3只/ha,90％的置信区间为1763.1～7431.4只.雌雄性比为1.26∶1.雄性群体主要由2龄和3龄个体组成,最大的生命期望值为5.5龄;雄性则主要由2龄个体组成,最大的生命期望值为4.5龄.泽蛙的存活曲线呈不规则梯形.泽蛙系多次产卵类型,雌体产卵间隔为42天.
Rana limnocharis is the dominant species in south China. It is one of the main natural enemies to injuvions insects of the agrigultural vegins and the vegetable fields. This paper reports something about the population ecology of Rana limncharis. Studies were made from 1987. 1 to 1989. 9 by using markrecapture methods. The total observed Rana limnocharis were 5641. In this paper, population density, sexual ratio, age structure, survival rate and population change are reported. We also made life table. Aggregative and migratory regular and breeding cycle are reported. We found that there are differences between male and female on activity during their breeding period.
出处
《晓庄学院自然科学学报》
CAS
1992年第3期285-288,共4页
Journal of Natural Science of Hunan Normal University
关键词
生态学
种群
泽蛙
ecology
population
Rana limnocharis/Changsha
