Abstract: The background survey on population and growth-decline of murine-like animals and their external parasites in Zhanjiang seaport was investigated.The common method was used in this paper.The results show that there were 8 species of murine-like animal(4 genera,2 families and 2 Orders).Three main kinds of external parasite were:3 species of flea(3 genara and 3 families),4 species of Gamasid mite(3 Genera and 2 family)and 9 species of chigger(6 genera and 1 family).The yearly percentage of animals infected with flea,Gamasid mite and chigger was 33.2%, 55.3% and 45.0%,respectively. The severest animals infected with flea,Gamaxsid mite and chigger were R.flavipectus,R.losea and B.indica nemorivaga correspondingly.The corresponding yearly indexes of animals infected with flea,Gamasid mite and chigger were 0.8,4.8 and 32.9.The animals with high infection indexes infected with respectively parasites mentioned above were R.norvegicus and R.losea and B.indica nemorivaga.The corresponding months of high and low infection rate in flea,Gamasid mite and chigger were in April and August,November and June,July,July and December.The corresponding months of high and low infection index were in April and August,August and March,July and December.The conclusions were that the possession of conditions of plague focus and a possibility of existing natural focus of tsutsugamushi disease.

摘要： 目的:调查了解湛江口岸鼠形动物及其体外寄生虫种群和消长的本底情况。方法:笼捕法。结果:有鼠形动物2目2科4属8种;寄生虫主要有3大类:蚤3科3属3种,革螨2科3属4种,恙螨1科6属9种。年度动物染蚤、革螨、恙螨率分别为33.2%、55.3%、45.0%;感染率最高的动物分别是黄胸鼠、黄毛鼠和板齿鼠。年度动物染带蚤、革螨、恙螨指数分别为0.8、4.8、32.9;感染指数最高的动物分别是褐家鼠、黄毛鼠、板齿鼠。动物体蚤、革螨、恙螨感染率最高及最低月份分别是4,8,11月及6、7,7,12月;感染指数分别是4,8,8和3,7,12。结论:具备鼠疫疫源地的条件和存在恙虫病自然疫源地的可能。

关键词: 鼠形动物, 体外寄生虫, 种群, 消长