长江三峡宜昌地带鼠类种群数量变动及生态学研究

通过10年的鼠情监测,发现长江三峡宜昌地带鼠类种群密度野外与室内的变动趋势不一致。野外鼠类密度高峰在1983～1984年,达11.54～24.49%,其他年份在4～7.5%之间波动;主要影响因素是非密度制约因素,但密度制约因素亦有一定影响。室内鼠类种群数量变动的规律不明显,但密度普遍较野外高(1984年除外)。室内优势种为黄胸鼠、褐家鼠和小家鼠,野外是黄毛鼠和黑线姬鼠,但存在交替更换现象。黑线姬鼠、黄毛鼠、黄胸鼠、褐家鼠、小家鼠的孕鼠最高胎数分别为11、12、12、14和9。

Study on Quantity Change and Ecology of Rodent in Yichang Aera on the Three Gorges of the Changjiang River

A rodent infestation for ten years in Yichang area on the Three gorges of the changjiang river was carried out in the period of 1980-1982. The results were that the quantity change of rodent in wild was not the same as the rodent in family. The density of rodent in wild was higher in 1983-1984 (11.54-24.49%), it was 4-7.5% in other years. The main effect factors of the quantity change of rodent were "nondensity dependent factor" and the density dependent factors had some effect also. The regularity of quantity change of the rodent in domestic was not obvious and the density was higher than the wild, all the years except 1984. The main species in wild were Apodemus agrarius, Rattus losea and that Domestic were Rattus norvegicus, Rattus flavipectus, Mus musculus, The main species were exchange in different years. In the article, the study results of breed and other ecology of rodent in wild and domestic were reported.