title: Evaluation of liquid baits against field populations of the longlegged ant (Hymenoptera: Formicidae).
abstract: An evaluation of several insecticides, namely, 0.01% fipronil, 0.05% indoxacarb, and 2% boric acid in liquid bait formulations were carried out against field populations of the longlegged ant, Anoplolepis gracilipes (Fr. Smith) (Hymenoptera: Formicidae). The baits were formulated in brown cane sugar solution (50%, wt:wt) and placed in an experimental bait station. Each bait was evaluated against populations of A. gracilipes at four buildings. Fipronil, indoxacarb, and boric acid were effective against A. gracilipes, with > 90% reduction of workers within 3 d posttreatment. Total reduction (100%) was achieved within 7 d for fipronil, 14 d for indoxacarb, and 56 d for boric acid. The performance of fipronil and indoxacarb baits did not differ significantly (P > 0.05) in all postbaiting sampling intervals. Reduction of A. gracilipes resulted in an increase in other ant species [Monomorium pharaonis (L.), Monomorium floricola (Jerdon), Monomorium orientale Mayr, Monomorium destructor (Jerdon), Tapinoma indicum Forel, Pheidole sp., and Camponotus sp.] at the baited locations.
authors.affiliation: Urban Entomology Laboratory, Vector Control Research Unit, School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
authors.forename: Kim-Fung
authors.initials: KF
authors.lastname: Chong
authors.forename: Chow-Yang
authors.initials: CY
authors.lastname: Lee
mesh_terms: D000818:Animals; D001000:Ants; D001888:Boric Acids; D007300:Insect Control / Q000295:instrumentation / Q000379:methods*; D007306:Insecticides; D010078:Oxazines; D011156:Population Density; D011720:Pyrazoles; D031786:Saccharum
chemical_list: D001888:Boric Acids; D007306:Insecticides; D010078:Oxazines; D011720:Pyrazoles; C401104:indoxacarb; C082360:fipronil; C032688:boric acid