Objective: To investigate the Suidasia nesbitti breeding status in the ground dust flour collected in Qiqihaer City.
Methods: Totally, 16 aliquots of ground dust flour were respectively collected from a college canteen and 15 households in Qiqihaer City. Then 10 g dust flour was taken from individual sample for isolation of the mites that were made of slide specimen, and the mites were identified and classified under a microscope.
Results: Acaroid mites were found in 15 of the 16 aliquots of samples (detection rate being 93.8％), and 7 species, belonging to 6 genera under 3 families, were identified. A total of 561 heads of mites were isolated from 160 g samples, with an average breeding density of 3.51 heads/g. The most breeding mite was associated with S. nesbitti.
Conclusions: Various species of mites are breeding in the ground dust flour in Qiqihaer City, and S. nesbitti occurs the most. These findings indicate that effective measures should be taken to prevent and control the harm associated with acaroid mite contamination.
［摘要］目的 调查齐齐哈尔市地脚粉中纳氏皱皮螨孳生情况。方法 从齐齐哈尔市一所高校食堂和15个家庭采集 地脚粉共16份, 每份样本10 g, 分离其中螨类, 制成玻片标本, 光镜下直接观察螨的形态特征, 并进行螨种鉴定、分类。结果 从16份样本中检出粉螨的样本有15份, 检出率为93.8%, 共分离出粉螨7种, 隶属于3科6属。160 g地脚粉中检出 粉螨561只, 平均孳生密度为3.51只/g, 纳氏皱皮螨检出率最高。结论 齐齐哈尔市地脚粉中有多种螨类孳生, 其中纳氏 皱皮螨的孳生密度最高, 应采取有效防制措施, 以降低粉螨污染带来的危害。.
Keywords: Acaroid mite; Breeding density; Detection rate; Ground dust flour; Suidasia nesbitti.