The potential of some natural compounds (thymol, vetiver essential oil, lysozyme, resveratrol) for the control of nosema infection in honeybees was evaluated. A first trial aimed at screening substances, in candy preparations, on the basis of their toxicity to honeybees and bees’ dietary preferences. None ofthe tested substances showed an increased bee mortality or decreased bee preference, and were therefore considered suitable for further testing. In the second trial the effects of the natural compounds on nosema diseased honeybees were evaluated: bees were individually dosed with nosema spores and fed candies prepared with the screened substances. The results showed that bees fed with thymol and resveratrol candies had significantly lower infection rates, and bees supplied with resveratrol prepared candy also lived significantly longer.We suggest that thymol and resveratrol could be useful in alternative strategies for the control of nosema disease.

Screening of natural compounds for the control of nosema disease in honeybees (Apis mellifera) / Maistrello, Lara; M., Lodesani; C., Costa; F., Leonardi; G., Marani; M., Caldon; F., Mutinelli; A., Granato. - In: APIDOLOGIE. - ISSN 0044-8435. - STAMPA. - 39(2008), pp. 436-445.

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