Dynamics of the Presence of Israeli Acute Paralysis Virus in Honey Bee Colonies with Colony Collapse DisorderReportar como inadecuado




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1

Entomology Department, Institute of Plant Protection, The Volcani Center, Bet Dagan, 50250, Israel

2

Beekeeping Division, Extension Service, Israeli Ministry of Agriculture, Bet Dagan, 50250, Israel





*

Author to whom correspondence should be addressed.



Abstract The determinants of Colony Collapse Disorder CCD, a particular case of collapse of honey bee colonies, are still unresolved. Viruses including the Israeli acute paralysis virus IAPV were associated with CCD. We found an apiary with colonies showing typical CCD characteristics that bore high loads of IAPV, recovered some colonies from collapse and tested the hypothesis if IAPV was actively replicating in them and infectious to healthy bees. We found that IAPV was the dominant pathogen and it replicated actively in the colonies: viral titers decreased from April to September and increased from September to December. IAPV extracted from infected bees was highly infectious to healthy pupae: they showed several-fold amplification of the viral genome and synthesis of the virion protein VP3. The health of recovered colonies was seriously compromised. Interestingly, a rise of IAPV genomic copies in two colonies coincided with their subsequent collapse. Our results do not imply IAPV as the cause of CCD but indicate that once acquired and induced to replication it acts as an infectious factor that affects the health of the colonies and may determine their survival. This is the first follow up outside the US of CCD-colonies bearing IAPV under natural conditions. View Full-Text

Keywords: honey bee; colony collapse disorder; Israeli acute paralysis virus; infectivity honey bee; colony collapse disorder; Israeli acute paralysis virus; infectivity





Autor: Chunsheng Hou 1, Hadassah Rivkin 1, Yossi Slabezki 2 and Nor Chejanovsky 1,*

Fuente: http://mdpi.com/



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