关键词: 山区, 小型兽类, 寄生虫, 感染状况, 云南省

Abstract: Objective To investigate the infection rate of ecto-and endoparasite of small mammals in Yunnan province, China. Methods From October 15 to December 16, 2016, small mammals were captured using the trap-day method in the northwestern and southern mountainous areas of Yunnan province. The captured small mammals were identified, followed by surface parasite examination and identification. Parasites were collected from diseased organs and intestines after dissection and then identified morphologically. SPSS 17.0 software was used for statistical analysis. Categorical data were expressed as frequency and percentage. The χ² test was used to compare the infection rate between groups. Results A total of 766 small mammals, which belonged to 44 species, 18 genera, 8 families, and 5 orders, were captured, with a total density of 12.51%. The predominant species included Eothenomys eleusis, Apodemus draco, A. latronum, Anourosorex squamipes, and Rattus tanezumi. The infection rate of ectoparasites was 22.06%, including 21.67% fleas, 7.83% gamasid mites and 1.83% ticks, respectively. Among them, 27 species (61.36%) were flea-carrying small mammals, 24 species (54.54%) were gamasid mites, and 8 species (18.18%) were tick-carrying small mammals. The infection rate of endoparasites was 12.27%, with 6.66% for Hepatica capillariasis, 6.92% for tapeworms, and 0.26% for other nematodes. The rate of infection with ecto-and endoparasites was relatively high in the small mammals captured between 100 and 3 999 meters above sea level. Conclusion With high density and diverse species of small mammals in some mountainous areas of Yunnan province, the infection rate of ecto-and endoparasites is relatively high, resulting in risks of diseases transmitted from small mammals to humans.

Key words: Mountainous areas, Small mammal, Ecto-and endoparasite, Infection rate, Yunnan province