摘要
1987和1988年4—5月,笔者在内蒙古正镶白旗布氏田鼠危害严重的草场上,连续两年用药物灭鼠。调查结果表明,在布氏田鼠种群数量上升或下降的年份,春季灭鼠均能控制当年的鼠害。鼠密度高时,灭鼠后鼠种群年龄结构、性比、怀孕率和睾丸下降率均发生改变。鼠密度低时,灭鼠对种群特征影响不显著。
This paper presents results of studies on the characteristics of population of brandt's vole (Microtus brandti) after rodent control. The investigation was carried out in the typical steppe in Zhengxiangbai County, Inner Mongolia, from April to September 1987 and 1988. Btandt's vole distributed in the steppe in Inner Mongolia is an important component of the rodent community in the typical steppe region.In field rodent control,0.05% wheat bait of Warfarin was used with the efficiency that is 83.03% and 75.42%, respectively, for April May 1987 and 1988.After rodent control the density of brandt's vole population was reduced evidently, but the rate of descending orchiocatabasis in male and rate of coinception in female increased, the age compositon changed and the average embryo number remained with no statistical sinnificance.
出处
《生态学报》
CAS
CSCD
北大核心
1991年第3期274-279,共6页
Acta Ecologica Sinica
关键词
灭鼠
布氏田鼠
种群特征
rodent control, brandt's vole, characteristics of population.
