Microorganisms in dead bumble bee larvae (Bombus spp.) from laboratory-reared colonies
2001
Pridal, A. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Zoologie a Vcelarstvi)
The aim of this study was to isolate bacteria and fungi (Ascosphaera) from dead larvae of bumble bee sampled from different inter independent laboratories and from a great number of colonies in order to determine the agent of the so-called blackening syndrome. This effort resulted in obtaining 13 types of isolates - nine of them were identified as distinct species, one of them as a species of Bacillus sp. and two as gram-negative cocci (bacilli). The yeasts were found only in one case. Fungi from the genus Ascosphaera were not isolated. Bacillus thuringiensis was detected in the bumble bee larvae for the first time. Bacillus pumilus and Paenibacillus glucanolyticus were also isolated and are regarded as potential pathogens in the bumble bee larvae. Potential pathogenity of several microbes is discussed.
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