粉尘螨的生境与季节消长

粉尘螨是人体螨病的主要病原螨之一。我们自１９９５年１２月至１９９６年１１月对该螨的生境及季节消长进行了研究。结果显示，粉尘螨生境分布广泛，在地脚粉，动物饲料及部分中药材中孳生密度较高。孳生密度自５月份起增高，至７、８月份达到高峰，１０月份开始下降，全年可维持５个月的较高水平。提示，有关职业人员在此期间应做好防护工作。

Seasonal Distribution and Habitat of Dermatophagoides farinae

Dermatophagoides farinae is one of the main pathogenic mites causing human acariasis. In or-der to find out the seasonal distribution and habitat of Dermatophagoides farinae in Huainan ares, the mite was investigated form December, 1995 to November, 1996. The results showed that Dermatophagoides farinae waswidely distributed with high deasity in floor flour, domestic animal feed and some traditional chinese medicineherbs. The number of the mite increased from May, reached the makimum druing July and August and started to decrease in October, maintaining a high leval for five months in that whole year. It suggests that the occupationalworkers concerned must keep from the mite to prevent human acariasis.