<Today we wonder if the neonics cause a small loss of bees which  is almost 
impossible to  verify.
>


Over the past 4 years, I've investigated several bee kills and have been  
surprised to find that what looks like an acute bee kill (a pile of dead  
bees) is characterized by high levels of Nosema ceranae plus high titers of a  
diverse array of viruses.  Since some viruses can induce trembling, a pile  
of dead and dying bees in front of a hive is no longer a  reliable 
indicative of an acute pesticide kill.
 
Jerry

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