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目的探讨开江县家、野鼠的种群组成及数量变化情况,给鼠害防制提供科学依据。方法采用夹夜法,对野外和室内鼠密度和种群进行调查。结果野外鼠密度高峰在1989-1990年和1992-1993年,达18.85%～26.57%,一般稳定在4.21%～14.88%之间;室内鼠密度高峰为1986年,达9.47%,其余年份在1.96%～7.26%之间,均较野外密度低。野外优势种为黑线姬鼠(51.59%)、四川短尾鼩(27.36%)和褐家鼠(18.68%),室内优势种为褐家鼠(64.32%)、小家鼠(26.58%)、四川短尾鼩(7.99%),但各年度优势种存在交替更换现象。结论野外鼠密度和种群变动受密度制约因素和非密度制约因素的影响,室内密度和种群变动与常年开展灭鼠工作有关。
Objective To investigate the population composition and population changes of house and vole in Kaijiang County and to provide a scientific basis for the prevention and control of rodent pests. Methods The nocturnal method was used to investigate the density and population of wild and indoor rats. Results The peak of density of rodents in the wild was between 18.85% and 26.57% in 1989-1990 and 1992-1993, generally stable between 4.21% and 14.88%. The indoor rat density peak was 9.47% in 1986 and 1.96 in other years % ~ 7.26%, are lower than the field density. The dominant species in the field were Apodemus agrarius (51.59%), Siberian cattail (27.36%) and Rattus norvegicus (18.68%), indoor dominant species were Rattus norvegicus (64.32%), Mus musculus (26.58% Sichuan short-tailed plover (7.99%), but the dominant species of the year there is alternating replacement phenomenon. Conclusion The density and population changes of wild rats are affected by the density and non-density constraints. The indoor density and population fluctuation are related to the pest control work carried out in perennial.