Virus infections and winter losses of honey bee colonies (Apis mellifera)
- 1 January 2010
- journal article
- Published by Taylor & Francis in Journal of Apicultural Research
- Vol. 49 (1) , 60-65
- https://doi.org/10.3896/ibra.1.49.1.08
Abstract
SummaryApiculturists have recently been confronted with drastic and inexplicable winter losses of colonies, and virus infections may be involved. Here, we surveyed 337 Swiss honey bee colonies in the winter of 2005 and 2006 and categorized their health status as: 1. dead (= no or few live bees left); 2. weak (= dwindling, high mortality of adult bees); or 3. healthy (= normal overwintering colony). From each colony, pooled adult workers were analyzed for deformed wing virus (DWV), acute bee paralysis virus (ABPV), chronic bee paralysis virus (CBPV) and Kashmir bee virus (KBV). Neither KBV nor CBPV were found, but significantly higher ABPV and DWV infections were found in dead vs. weak vs. healthy colonies (except DWV in 2006 between weak and healthy). Moreover, ABPV and DWV loads were positively correlated with each other. This is the first report demonstrating statistically significant correlations between viruses associated with Varroa destructor and winter mortality. ResumenLos apicultores se han enfrentado recientemente con drásticas e inexplicables pérdidas de colonias en el invierno, y las infecciones víricas podrían estar involucradas. Aquí, muestreamos 337 colonias suizas de abejas en el invierno de 2005 y 2006 y catalogamos su estado de salud como: 1. muerta (=con ninguna o escasas abejas); 2. débil (escasas, alta mortalidad de abejas adultas); o 3. sanas (= colonia que hiberna normal). De cada colonia, se analizaron grupos de obreras adultas para el virus del ala deformado (DWV), el virus de la parálisis aguda de la abeja (ABPV), el virus crónico de la parálisis de la abeja (CBPV) y el virus de Cachemira de la abeja (KBV). No se encontraron ni KBV ni CBPV, pero infecciones perceptiblemente más altas de ABPV y de DWV fueron encontradas en colonias muertas vs débil vs colonias sanas (excepto DWV en 2006 entre débil y sano). Por otra parte, las cargas de ABPV y de DWV se correlacionaron positivamente. Éste es el primer informe que demuestra correlaciones estadísti...Keywords
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