Relative Abundance of a Vector of Scrub Typhus Leptotrombidium sialkotense in Southern Yunnan Province China

摘要

The chigger mite is one of the 6 main vectors of scrub typhus in China. Before present study, was found in some parts of Hunan province, China with a narrow geographical distribution. During field investigation 2016–2017, we found in Jingha, southern Yunnan, China. Of 15 small mammal host species, were collected from 6 species of the hosts. was a dominant host of , from which 98.3% of the mites were collected. The chigger mite showed a relatively high infestation prevalence ( =11.7%) and mean abundance ( =0.5) in comparison with the rest 5 host species. These results reveal a certain host specificity of to a rat . The mite showed an aggregated distribution on the host ( <0.05). A positive correlation observed between and the body length of hosts. There was a positive interspecific association between and 2 other dominant vectors, and .