[Pollinator] Two of the world's top three insecticides harm bumblebees

[David Inouye]

http://www.theguardian.com/environment/2016/apr/28/two-worlds-top-three-leading-insecticides-harm-bees-study-shows

<link rel="stylesheet" type="text/css" 
href="https://assets.guim.co.uk/stylesheets/b514e462c8dc70061dbb013c267cb82c/content.css"/> 


Two of the world's most widely used insecticides cause significant 
harm to bumblebee colonies, a new study has found, but a third had no effect.

The work shows the distinct effects of each type of neonicotinoid 
pesticide, from cuts in live bees and eggs to changed sex ratios and 
numbers of queens. Previously, the different types of neonicotinoids 
have often been treated as interchangeable.