关键词: 革螨, 种群, 宿主, 长爪沙鼠

Abstract:

Objective To investigate the community structure of gamasid mites in a plague area of Dingbian county for further revelation of the role of these species in transmitting and preserving the plague bacillus. Methods The mites were collected from rodent bodies and nests, fixed in Hoyer’s medium and identified under the microscope. Results A total of 463 gamasid mites under 6 species, 5 genera and 3 families were collected. The dominant species included Haemogamasus kitanoi, Haemolaelaps glasgowi and Eulaelaps cricetuli, accounting for 40.6%, 33.0% and 24.8%, respectively, followed by a small amount of Macrocheles matrius, Macrocheles decoloratus and Laelaps algericus. Eight hundred fifty-nine rodents were captured and 135 nests were investigated. The dominant host mammal was Meriones unguiculatus, accounting for 90.9% of the total captives. The mite-carrying rate was 7.3% in M. unguiculatus and 23.7% of all nests. Most of the collected mites were female. Conclusion The community structure of gamasid mites is simple in this area with only a few species parasitic on the dominant host rodents. The dominant gamasid mites found on M. unguiculatus included H. kitanoi, H. glasgowi and E. cricetuli.

Key words: Gamasid mite, Community structure, Host, Meriones unguiculatus