Apicystis bombi (Apicomplexa: Neogregarinorida) parasitizing Apis mellifera and Bombus terrestris (Hymenoptera: Apidae) in Argentina

PLISCHUK, S.; MEEUS, I.; SMAGGHE, G.; LANGE, C. E.

Environmental Microbiology Reports

Society for Applied Microbiology and Blackwell Publishing Ltd.

Año: 2011 vol. 3 p. 565 - 568

1758-2229

The neogregarine Apicystis bombi is considered a low prevalence parasite of Bombus spp. Prior to our work it has only once been detected in one single specimen of the Western honeybee Apis mellifera. This contribution reports the presence of A. bombi parasitizing both A. mellifera and B. terrestris at a site in Northwestern Argentine Patagonia (Bariloche, close to the border with Chile) and analyzes its possible absence in the Pampas region, the most important beekeeping region of the country. In Bariloche, prevalence of A. bombi in A. mellifera was 7.6% in 2009, and 13.6% in 2010, whereas in B. terrestris it was 12.1%. Infections were not detected in 302 bee hives periodically prospected along three years (almost 400,000 honeybee specimens) in the Pampas. Analysis with the probability program FreeCalc2 suggested a possible absence of A. bombi in this area. Due to high virulence showed in several species of Bombus in the Northern hemisphere, A. bombi should be closely monitored in A. mellifera and in native Bombus species or other Apidae