title: Baseline Susceptibility and Cross-Resistance in Adult and Larval Alphitobius diaperinus (Coleoptera: Tenebrionidae) Collected from Poultry Farms in Arkansas.
abstract: Insecticide resistance in the lesser mealworm, Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae), can pose a serious threat to their successful management in broiler chicken farms in Arkansas. Resistance and cross-resistance were determined in lesser mealworm populations collected from two broiler farms in Arkansas, with different insecticide application histories. Farm M was treated with insecticides over the past 10 yr, whereas Farm S had no insecticidal usage history. Concentration-mortality bioassays using selected insecticides were conducted on adults and seventh-instar larval beetles. A probit analysis suggested the M population to be resistant to cyfluthrin and tetrachlorvinphos, while the S population was susceptible to both compounds. The M population showed no cross-resistance to imidacloprid, spinosad, or chlorfenapyr. The M and S populations were similar in their susceptibility to imidacloprid, spinosad, and chlorfenapyr. The suitability of imidacloprid and spinosad, and further testing of chlorfenapyr as a potential candidate for lesser mealworm control is discussed.
authors.affiliation: Department of Entomology, Rutgers-The State University of New Jersey, 93 Lipman Dr., New Brunswick, NJ 08901. nsingh@aesop.rutgers.edu.
authors.forename: Narinderpal
authors.initials: N
authors.lastname: Singh
authors.affiliation: Department of Entomology, University of Arkansas, 319 Agriculture Bldg., Fayetteville, AR 72701.
authors.forename: Donn
authors.initials: D
authors.lastname: Johnson
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D001131:Arkansas; D002645:Chickens; D001517:Coleoptera / Q000187:drug effects* / Q000254:growth & development; D007305:Insecticide Resistance; D007306:Insecticides / Q000494:pharmacology*; D007814:Larva / Q000187:drug effects; D011200:Poultry
chemical_list: D007306:Insecticides
keywords: broiler; chlorfenapyr; cyfluthrin; residual; spinosad