Influence of Integrated Managment of hives of honeybee (Apis mellifera L.) in the control of the sporulation of Nosema spp.

PÉREZ, R. C. ; REYNALDI, F.J; DIMENA, S. E; TOMASELLI, S.,; D`ALESANDRO, L.; LEVERATTO, D.

Tafi del Valle. Tucuman

Jornada; Jornadas Sociedad Argentina de Biología; 2010

Sociedad Argentina de Biología

Nosemosis is the most widespread disease of adult honey bee. The aetiological agent is Nosema spp., a unicellular parasite of the class Microsporidia, which are now classified as fungi or fungi-related. Nosema spp. has a resistant spore that withstands temperature extremes and dehydration. The objective of the present work was to determine the influence of Integrated Managment of Hives (IMH) of honeybee (Apis mellifera L.) in the control of the sporulation of Nosema spp.Integrated managment of the apiary consists of control of spaces, breeding, genetic and healthy of the colony together hygienic and prophylaxis of inert material. The field trail was carried out in Delta, Partido de San Fernando, Buenos Aires province, Argentina, from may 2008 to may 2009. Monthly, 35 adults honey bees of 5 different hives were preserved in 4% formaldehyde. Laboratory analysis were carried out macerating 35 abdomens in distilled water. The results were observed with 40X optical microscope. The results were interpreted according with a graduate scale (1 to 5) propouse for  Cornejo Rossi (1974) according with the severity of the infestation. At the begginig of the trails, all hives infestation levels between 3 to 5. This levels indicated pharmacological treatment in spring but,  as it was winter, we decide to implement  IMH as an alternative to reduce spores charges in hives under study. Spores charges were high until the begining of the summer, similiar data where found for Cornejo & Rossi (1974), when fall down because of the IMH propouse. The result allow us to avoid the use of antibiotics and confirm the efficacy of IMH for reduce the spores charge of Nosema spp.