Investigation and morphological observation of Suidasia breeding in flourmills in Huaibei

Abstract

To investigate the Suidasia breeding in the flourmill and further observe its morphological characteristics. The samples were collected from different habitats of a flourmill and then separated, and the chipping was kept. The mites were selected and counted from the chipping under an optical microscope. The mites were made slide samples and identified. The mites were identified as Suidasia (including Suidasia nesbitti and Suidasia medanensis). A total of 20 samples were collected in this study, of which 13 were positively detected, with the detection rate of 65%. There were 2 876 mites of Suidasia that were detected from 200 g sample. The average breeding density was 14.38/g. It is common that Suidasia breeding in flour, which might cause human acariasis and allergic asthma. Therefore, the effective prevention measures should be taken.