Toxicity and repellency of borate-sucrose water baits to Argentine ants (Hymenoptera: Formicidae).
نویسندگان
چکیده
The oral toxicity of boron compounds to the Argentine ant, Linepithema humile (Mayr), was evaluated in laboratory tests. The ants were provided 25% sucrose water containing 0.5 and 1% boric acid, disodium octaborate tetrahydrate, and borax. Lethal times of these solutions were a function of the concentration of boron. In field tests, the ants showed no discrimination between disodium octaborate tetrahydrate and boric acid. There was a significant reduction in consumption of sucrose water with > 1% boric acid.
منابع مشابه
HOUSEHOLD AND STRUCTURAL INSECTS Delayed Toxicity as a Critical Factor in the Efficacy of Aqueous Baits for Controlling Argentine Ants (Hymenoptera: Formicidae)
Boric acid, imidacloprid, and thiamethoxam in sucrose aqueous baits had different delayed toxicities toworker Argentine ants,Linepithema humile (Mayr). The concentrations required toproduce anLT50 (time required toproduce 50%mortality)within 1Ð4dwere 3.63Ð0.55%boric acid, 9.2 10 3 to 7.1 10 % imidacloprid, and 3 10 4 to 2 10 % thiamethoxam. The three toxicants were not repellent. Other laborato...
متن کاملDelayed toxicity as a critical factor in the efficacy of aqueous baits for controlling Argentine ants (Hymenoptera: Formicidae).
Boric acid, imidacloprid, and thiamethoxam in sucrose aqueous baits had different delayed toxicities to worker Argentine ants, Linepithema humile (Mayr). The concentrations required to produce an LT50 (time required to produce 50% mortality) within 1-4 d were 3.63-0.55% boric acid, 9.2 x 10(-3) to 7.1 x 10(-4)% imidacloprid, and 3 x 10(-4) to 2 x 10(-5)% thiamethoxam. The three toxicants were n...
متن کاملDevelopment of virtual bait stations to control Argentine ants (Hymenoptera: Formicidae) in environmentally sensitive habitats.
A novel bait station referred to as a virtual bait station was developed and tested against field populations of the invasive Argentine ant, Linepithema humile (Mayr) (Hymenoptera: Formicidae), at White Beach, Camp Pendleton, in Oceanside, CA. White Beach is a nesting habitat for an endangered seabird, the California least tern (Sterna antillarum browni Mearns). The beach is heavily infested wi...
متن کاملLaboratory and Field Evaluations of Polyacrylamide Hydrogel Baits Against Argentine Ants (Hymenoptera: Formicidae).
The development of effective baits to control the Argentine ant, Linepithema humile (Mayr), has been problematic because foragers prefer sweet liquids, while many toxicants are insoluble in water and liquid baits are generally difficult to deliver. The incorporation of thiamethoxam and sucrose solutions into a water-absorbing polyacrylamide hydrogel provides a unique and novel carrier and metho...
متن کاملHOUSEHOLD AND STRUCTURAL INSECTS Acceptance and Intake of Gel and Liquid Sucrose Compositions by the Argentine Ant (Hymenoptera: Formicidae)
Liquids and gels are common delivery forms used in commercial ant baits, but the relative effectiveness of each is unknown. We compared the feeding responses of the Argentine ant, Linepithemahumile(Mayr), to liquid andgel compositionsof sucrose. In choice assays,moreworkers were counted on gel than liquid; however, substantiallymore liquidwas consumed. Becauseworkers could stand on the gel, mor...
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ورودعنوان ژورنال:
- Journal of economic entomology
دوره 93 4 شماره
صفحات -
تاریخ انتشار 2000