Colony collapse disorder

Chemical compounds that have some characters similar to nicotine have been synthesized in recent decades and have widely been used as insecticides. They are collectively called neo-nicotinoid . One of them, called clothianidin, has recently been shown to be a major cause of colony collapse disorder (massive sudden death of bees). It is believed to bind to the brain of bees (and other insects) as nicotine does, and disrupts their brain function. It has been reported that the colony collapse has dramatically decreased once neo-nicotinoid was banned in Germany. 

Colony CoUapse Disorder Collapse of a colony after a seemingly healthy colony of worker bees falls into a sudden, fatal decline. 

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