Journal
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
Volume 23, Issue 2, Pages 194-199Publisher
BRAZILIAN COLL VETERINARY PARASITOLOGY
DOI: 10.1590/S1984-29612014037
Keywords
Stenotrophomonas maltophilia; Stomoxys calcitrans; antifungal activity
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The microbiota present in Stomoxys calcitrans larvae may assist their survival in contaminated environments through production of inhibitory substances. Bacteriological identification methods, the polymerase chain reaction (PCR) and scanning electron microscopy (SEM) were used to detect a bacterium naturally present in mucus and macerated S. calcitrans larvae. The antifungal activity was determined based on the results from disk diffusion tests on an artificial solid medium. The bacterium was identified as Stenotrophomonas maltophilia and presented antifungal activity against Beauveria bassiana sensu lato isolates CG 138, CG 228 and ESALQ 986. This result suggests that the larval microbiota is a factor that can compromise the use of B. bassiana s.l. fungus for biological control of S. calcitrans larvae.
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