Investigação

Início / Investigação / Artigos / Grooming behaviour towards Varroa jacobsoni in four strains of Apis mellifera.

Grooming behaviour towards Varroa jacobsoni in four strains of Apis mellifera.

Ano
2000
Abstract

The effectiveness of grooming behaviour directed towards phoretic Varroa was investigated in four commercial strains of Apis mellifera (A. m. carnica, A. m. caucasica, A. m. iberica and A. m. ligustica), as this variable had been reported associated with differences in degrees of honey bee colony tolerance to Varroa. In this experiment, I aimed at accounting for the comparative mean strain worker grooming behaviour efficacy at visibly damaging exclusively adult, apparently viable, phoretic Varroa that fell from small, queen‑ right, honey bee colonies in hard‑polystyrene Apidea mating hives. Combining the percentages of the fallen Varroa with indented scuta and with leg mutilations into a "fatal injury index", it was found that very low average daily percentages of the initially introduced Varroa fell from their host colonies with what would have been fatal injuries. This happened to a similar extent in all experimental colonies, irrespective of their strain (0.10 ± 0.06, 0.02 ± 0.02, 0.16 ± 0.07 and 0.16 ± 0.07 % in A. m. carnica, A. m. caucasica, A. m. iberica and A. m. ligustica, respectively; P=0.26). These results suggest that, in field honey bee colonies hosting well established populations of Varroa, very low mean daily percentages of phoretic Varroa may be expected to fall fatally injured (providing those colonies' grooming behaviour efficiency towards Varroa is not considerably improved), simultaneously casting doubt on whether worker grooming behaviour may be considerably associated with honey bee colony tolerance to Varroa.

Palavras Chave

Comportamento de limpeza; Varroa; Honeybees; Grooming behaviour.

Tipo de Artigo
Investigação
Tipo de Revisão
Internacional
Âmbito Geográfico
Internacional
Situação
Publicado
Área de Trabalho
Referência

Murilhas, A. (2000). Grooming behaviour towards Varroa jacobsoni in four strains of Apis mellifera. Apiacta , Journal of Apimondia for Science and Practice, 35: 13‑24.