Kashmir Bee Virus

Kashmir bee virus (KBV) is an infectious disease of honeybees. KBV is spread through Varroa mites. The Kashmir Bee Virus is a natural disease of the eastern honeybee Apis cerana. After the introduction of the western honeybee Apis mellifera into the distribution range of A. cerana in southern Asia, the virus made a “species-jump” and began to parasitize its new host. KBV of honeybees is a RNA-virus in the newly established family Dicistroviridae. RNA viruses are very small (in comparison to DNA-viruses) and associated with the mitochondria of host cells

Symptoms

  • Weakened colony without any apparent presence of brood diseases and mites
  • Increasing numbers of dead or dying bees on the inner cover, landing board or in front of the hive
  • Trembling
  • Uncoordinated movement
  • Bees are partly or completely hairless where the upper surface of the thorax is especially dark
  • Older adult bees have a greasy or oily appearance
  • Recently emerged bees may appear opaque

Cause

  • pest - varroa destroyer

Diagnosis

  • Clinical signs
  • Polymerase Chain Reaction (PCR) analysis

Treatment


  • Reduce stress to bees by applying good management practices
  • Provide plenty of food stores, especially pollen.
  • Keep mite levels low through frequent monitoring and applying mite control products when necessary.
  • Apply hygienic management practices in the apiary.

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