[img_assist|nid=104|title=|desc=|link=none|align=right|width=150|height=65]Rosi-Marshal et al. (2007) just published a long overdue study about whether Bt plant residues got into headwaters during or after cultivation, and whether the Bt-toxin would have adverse effects on water insects like caddies flies, close relatives to butterflies. In both cases the answer was yes. This laboratory study gives enough indication to at least include water insects in the monitoring of Bt crops.