The study, conducted by Jamison Scholer and Vera Krischik, explored the sublethal effects of imidacloprid and clothianidin on Bombus impatiens (the Common Eastern Bumblebee) over an 11-week period.
: While low doses (less than 10 ppb) typical of seed-treated crops did not immediately kill queens, higher doses (20 ppb to 100 ppb) commonly found in ornamental plants and certain spray-treated crops significantly increased queen mortality by the end of the study. Download 91573 plus pdf
: Sublethal exposure led to reduced nectar storage and diminished foraging activity, which can lead to colony collapse even if the bees do not die instantly. The study, conducted by Jamison Scholer and Vera
: These findings highlight that current regulatory assessments may underestimate the risk of systemic insecticides by failing to account for chronic, season-long exposure. Drafting the Long Paper season-long exposure. Drafting the Long Paper