title: DAILY SENSITIVITY RHYTHM OF THE TWO-SPOTTED SPIDER MITE, TETRANYCHUS URTICAE, TO DDVP.
abstract: Adult females of the two-spotted spider mite (Tetranychus urticae Koch), showed a daily rhythm of sensitivity to DDVP (dimethyl 2,2-dichlorovinyl phosphate). When the mites were maintained in alternating light-dark conditions, maximum susceptibility to the chemical occurred 2 hours after dawn and the mites were least sensitive 2 hours after nightfall.
mesh_terms: D000818:Animals; D004006:Dichlorvos; D005260:Female; D008925:Mites; D062025:Organophosphate Poisoning; D010507:Periodicity; D010575:Pesticides; D010600:Pharmacology; D010758:Phosphorus; D011042:Poisons; D012106:Research; D040102:Tetranychidae
chemical_list: D010575:Pesticides; D011042:Poisons; D010758:Phosphorus; D004006:Dichlorvos
keywords: EXPERIMENTAL LAB STUDY; MITES; PERIODICITY; PESTICIDES; PHARMACOLOGY; PHOSPHORUS POISONS, ORGANIC