Difference between revisions of "Varroa destructor"

Revision as of 17:43, 17 March 2014

varrora mite, ventral view
Source: Pest and Diseases Image Library - IPM Images

Varroa destructor Anderson & Trueman, 2000 - (varroosis)
is an external parasite of honey bees with an almost world-wide distribution. Originally it was a parasite of Apis cerana but has adapted to Apis mellifera around 1950, and has developed into a serious problem for bee keepers. It was first recorded in Europe in 1967 and was introduced into North America in the 1980's. The mites puncture the soft intersegmental cuticle of the parasitized bees and suck their hemolymph, leaving open wounds. They rarely kill the host, but shorten its life span. Parasitized colonies decline. Further, the mite can transmit honey bee viruses like the Deformed wing virus. For reproduction, female mites move into honey bee larval cells and lay eggs once the cells are capped. The young mites then move to the freshly molted adult bee and disperse this way to other colonies. The can also switch hosts when 2 bees stay close together in the hive. The development from egg, through the protonymph and deuteronymph stages, to the adult mite lasts around 1 week. The adult female is reddish brown and about 1-1.8 x 1.5-2 mm large.

For details see the respective page in Wikipedia.

• Other images of Varroa destructor (Wikimedia Commons and IPM Images - click to enlarge)
• 

  dorsal view

• 

  varroa mites on honeybee pupa

•