To evaluate and monitor insecticide resistance in onion thrips Thrips tabaci on onion (Allium cepa), we conducted a study using three field populations in the Treasure Valley of eastern Oregon and southwestern Idaho using the insecticides Lannate (methomyl) and Exirel (cyantraniliprole). To evaluate these two insecticides, biological assays were conducted...
Endogenous inhibitors of insect microsomal oxidases are a serious
problem in in-vitro studies of insecticide metabolism.
Their number,
chemical nature, modes of action, and their effectiveness as inhibitors
are unknown.
In the case of house flies, there may be as many as
four inhibitors.
The most important of these is...
Previous investigations have shown that exposure to DDT results
in increased activity in soluble and microsomal enzyme in insects.
These responses in DDT-resistant Triatoma infestans
nymphs and in adults of DDT-resistant Musca domestica (the common
house fly) are accompanied by increased RNA and protein synthesis.
The phenomenon has been termed...
Two organophosphates (Ruelene and Tiguvon) and two carbamates
(Sevin and Baygon) were administered topically at various sublethal
concentrations to cricket eggs. All the pesticides caused an immediate
decrease in the acetylcholinesterase (AChE) activity level in the
embryo, but the level usually returned to normal within three days
after dosage. The...