Short Communication: Efficacy of Two Commercial Disinfectants on Paenibacillus larvae Spores

Abstract

Paenibacillus larvae is a spore-forming bacterium causing American foulbrood (AFB) in honey bee larvae. The remains of a diseased larva contains billions of extremely resilient P. larvae spores viable for decades. Burning clinically symptomatic colonies is widely considered the only workable strategy to prevent further spread of the disease, and the management practices used for decontamination requires high concentrations of chemicals or special equipment. The aim of this study was to test and compare the biocidal effect of two commercially available disinfectants, "Disinfection for beekeeping" and Virkon S on P. larvae. The two products were applied to P. larvae spores in suspension as well as inoculated on two common beehive materials, wood and Styrofoam. "Disinfection for beekeeping" had a 100 % biocidal effect on P. larvae spores in suspension compared to 87.0-88.6% for Virkon S which, however, had a significantly better effect on P. larvae on Styrofoam. The two disinfectants had similar effect on infected wood material.

Keywords

Paenibacillus larvae; American foulbrood; disinfectants; apis mellifera; spores

Published in

Frontiers in Veterinary Science
2022, article number: 884425
Publisher: FRONTIERS MEDIA SA

SLU Authors

• Forsgren, Eva

  • Department of Ecology, Swedish University of Agricultural Sciences
    

• Nilsson, Anna

  • Department of Ecology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Ecology
Other Veterinary Science


Publication identifier

DOI: https://doi.org/10.3389/fvets.2022.884425

Permanent link to this page (URI)

https://res.slu.se/id/publ/117410