Biological activity of the mite Sancassania sp. (Acari: Acaridae) from bat guano associated with the pathogenic fungus Histoplasma capsulatum

Memórias do Instituto Oswaldo Cruz

Daniel A Estrada-bárcenas²  José G Palacios-vargas¹  Edith Estrada-venegas¹  Pavel B Klimov¹  Alejandro Martínez-mena¹  Maria Lucia Taylor² 

[1] ,Facultad de Medicina Departamento de Microbiología-Parasitología

关键词: mites;    Sancassania sp.;    Histoplasma capsulatum;    bat guano;   

DOI  :  10.1590/S0074-02762010000200003

来源: SciELO

【 摘 要 】

Mites and the mammal pathogenic fungus Histoplasma capsulatum are the major components of bat guano microbiota. Interactions between mites and H. capsulatum were evaluated under laboratory conditions. Acarid mites, mainly Sancassania sp., were the most abundant microarthropod in the sampled guano of the Mexican bat Tadarida brasiliensis mexicana and, based on its morphology, Sancassania sp. was similar to the cosmopolitan species Sancassania sphaerogaster. The mycophagous and vectoring activities of this mite were tested for H. capsulatum and two other fungal species, Sporothrix schenckii (pathogenic) and Aspergillus sclerotiorum (non-pathogenic). S. ca. sphaerogaster was able to reproduce in H. capsulatum and S. schenckii colonies, multiplying in great numbers under controlled fungal mycelial-phase culture conditions. H. capsulatum colonies were completely destroyed after 14 days of in vitro interaction with mites. In contrast, S. ca. sphaerogaster did not reproduce in A. sclerotiorum cultures. S. ca. sphaerogaster was found vectoring H. capsulatum, but not the two other fungal species studied.

【 授权许可】

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