关键词: 大仓鼠, 黑线姬鼠, 彻底灭鼠, 入侵现象, 对抗现象

Abstract: An investigation on house rodents was carried out in 17 villages of 6 municipalities and prefectures in Shandong province. 1980～1981. In the investigation of 7996 trap-nights, the total capture rate was 11.45%, C. triton was no trapped. Investigation on house rodents was carried out in Xujia village in Jinan suburb, in August 1981 by 588 trap-nights, the total capture rate was 7.99%. 1983, 612 trap-nights in a bout village of Xujia and in September of 1984, 316 trapnights was studied; no C. triton was trapped either. Since Diphacine-Na treated baits were used repeatedly in December 1983 to kill house rodents at Xujia village, investigation of 897 trap-nights in January 1984 revealed a capture rate of 0.45% From April 1984 to February 1985 C. triton was trapped in every mouth. From January 1984 to February 1985, 4924 trap-nights showed a total trapture rate of 9.65%; the capture rate of C. triton was 2.03%, accounting for 21.05% of the total, From April 1984 to February 1985, 100 C. triton and 34 A. aglarius were trapped and 69 C. triton and 1 A. aglarius were trapped in three mouths of May, September and October. The result indicated that there appeared a succession of house rodent commynity and C. triton invaded the village after a thorough elimination of house rodents in rural areas. Another explanation for the persistent and severe invasion of C. triton may be its relatively high density in the fields. There are two peak of invasion(One in May, another in September and October). During the invasion, there might be a confrontation between A. agrarius and C. triton.