福建省三都澳岛鼠体螨类调查

目的调查福建省三都澳岛鼠体外革螨及恙螨的分布情况。方法采用笼日法捕鼠，检获鼠体外革螨及恙螨。结果共检获革螨6769只，分属4科8属13种，恙螨31580只，分属1科2属6种。体外革螨密度最高的鼠种为针毛鼠，以土尔克厉螨、福建厉螨为优势种，黄毛鼠及针毛鼠染恙螨率及总恙螨指数均较高，但前者以小板纤恙螨为优势种，后者以苍白纤恙螨为优势种；灌木山地黄毛鼠革螨染螨率为86．67％，螨指数为9．99，两者均高于水稻田（染螨率为68．57％，螨指数为6．86）；灌木山地黄毛鼠恙螨染螨率为93．14％，螨指数为128．30，两者亦高于水稻田（染螨率为36．90％，螨指数为29．03）；毒厉螨、纳氏厉螨季节性不明显，全年均有出现，福建厉螨、土尔克厉螨、小板纤恙螨、苍白纤恙螨、广东珠恙螨及异毛纤恙螨均为冬春活动的螨，中华血厉螨仅出现于冬季，地里纤恙螨则出现于气温较高的夏秋季。结论福建省三都澳岛鼠体外革螨及恙螨的分布广泛，种群构成和密度受宿主、生境、季节等因素的影响。

Investigation on ectoparasitic mites on rodents of rodents in Sanduao of Fujian province

Objective To investigate the distribution of gamasid mites and chigger mites on rodents in Sanduao island of Fujian.Methods Rodents were captured alive with cages,and the mites parasitized on the rodent were collected and identified.Results 6769 gamasid mites collected belonged to 4 family,8 genus and 13 species,and 31 580 chigger mites collected belonged to 1 family,2 genus and 6 species.The density of gamasid mites parasitized on Niniventer fulvescens was the highest,and the dominant mite species were Laelaps turkestanicus and L.fukienensis.The infested rate and the infested index of chigger mites to Rattus rattoides and N.fulvescens was all higher,and the dominant species parasitized on R.rattoides was Leptotrombidium scutellare and that on N.fulvescens was L.pallidum.The infested rate of gamadis mites to R.rattoides in bushes and mountainous regions was 86.67% and the infested index was 9.99,which were higher compared to the infested rate of 68.57% and the infested index of 6.86 in paddy fields.The infested rate of chigger mite to R.rattoides in bushes and mountainous was 93.14% and the infested index was 128.30,which were higher compared to the infested rate of 36.90% and the infested index of 29.03 in paddy fields.L.echidninus and L.nuttalli appeared in the whole year without obvious seasonal changes.L.fukienensis,L.turkestanicus,L.scutellare,L.pallidum,Doloisia guangdongensis and L.allosetnm were all active in winter and spring while Haemolaelaps chinensis only appeared in winter,and L.deliense appeared in summer and autumn when the temperature was comparatively higher.Conclusion 13 species of gamasid mites and 6 species of chigger mites were found on the rodents in Sanduao island,and the changes of species composition and population density was affected by host,habitats and seasons.