【摘要】 岑巩县黄胸鼠种群在秋季活动最频繁,12～3月少见。一年中有两次繁殖高峰,分别出现在5月和9月。胎仔变幅为1～12只,平均7.2只。四季中以冬季胎仔数最少(5.6只),春季最高(7.8)。繁殖以月均温16.5～26.7℃较适宜,低于11℃时受到抑制。一般雌雄比为1:0.9,而春季雄体多于雌体,冬季雄性少于雌性,夏秋两季雌雄接近于1:1。更多还原

【Abstract】 The population of yellow breasted mouse in Cen-gongCounty acts frequently in tne Autumn. Few of them is seen from December to next March. There are two peaks of reprodection in a year like the action tendency of growth and decline. One peak is in May, another is in Septemper. The variance of foetus baby is foetus baby is from 1 to 12, mean is 7.2. In four seasons there are fewest numbers of foetus baby in the winter (5.6) and most numbers in the Spring (7.8).It is suitable for reproduction wnen average temperature per month is from 16.5 to 26.7 centigrade degree. The reproduction is affected when the temperature is below 11 centigrade degree. Generally, the rate of male and lemale is 1 : 0.9.However, the numbers of male baby is more than that of female body in the Spring, whereas in the winter. The rate of male and female approaches to 1 : 1 in the Summer and Autumn.更多还原