This, just out

Although V. destructor is not the sole cause of colony losses
experienced worldwide in recent years, a consensus emerges that it
represents the key factor (Neumann and Carreck, 2010). Removing
V. destructor from the complex equation of honey bee health would
reduce the pressure on the honey bee’s extensive natural defence
mechanisms (Evans and Spivak, 2010) against the many
environmental health challenges.

Journal of Apicultural Research 51(1): 125-132 (2012)

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