شناسايي گونه مايت هاي گرد و غبار در اماكن مسكوني شهر ساري در سال هاي 79-1378

Identificetion of different species of mites in dust, collected from residents of sari township in 1999-2000

Background and purpose: Considering the role of mite in causing severe allergic reactions in sensitive individuals, particularly women, a study was done to determine the effects of mites in residents of sari township in 1999-2000 Materials and methods: This was a desciptive study done on the residens in sari. Sampling was done randomly in 80 residential places. Samples were collected from mattresses, pillows and carpets by vacume cleaner collected material was kept in a plastic bag and sent to the laboratory. 200 mgs of dust particles were placed in a petridish and observed under minocular considering the anti light property of mites, they remained under the layer of dust and were picked up by an entomology needle and kept in 70% alcohol. Lighting of sample, neutraliztion and finally assembling were done in hoyer solution for identification after mounting. All the data about the mites were recorded in a questionnair and analyzed statistically. Results : In this study, 3400 mites were hunted and 5 species could be identified as follows: D. Pteronyssinus, D. farinae, Glycyphagus domesticus, E. moynei and Cheylatus malayensis. Considering the identified species, it was cleared that, 30 houses(37.5%) were infected by one or more species of mites, also it was noticed that, 15% of houses had more than 300 mites. Conclusion: The result of this study showed that contamination rate of house with mites contaning dust was 37.5%. Considering the fact that E. mayei, D. pteronyssinus and D. farinae play an important role in severe allergies, and 15% of these houses had the density of more than 300 mites, this could have a complete correlation with symptoms of bronchial asthma.