Susceptibility of the Lesser Mealworm, Alphitobius diaperinus (Coleoptera: Tenebrionidae), From Broiler Farms of Southern Brazil to Insecticides
| Autor: | Oderlei Bernardi, Frederico Hickmann, Tiago Giacomelli, Alexssandro de Freitas de Morais, Jerson Vanderlei Carús Guedes, Eduarda S Bronzatto |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Mealworm Insecticides Veterinary medicine Farms organophosphate Alphitobius diaperinus Population lesser mealworm 01 natural sciences Cypermethrin chemistry.chemical_compound Pyrethrins Animals Bioassay education Larva education.field_of_study pyrethroid Ecology biology poultry fungi 0402 animal and dairy science Broiler insecticide resistance 04 agricultural and veterinary sciences General Medicine biology.organism_classification Housing Animal 040201 dairy & animal science Coleoptera 010602 entomology Veterinary Entomology chemistry Insect Science Chlorpyrifos Chickens Brazil |
| Zdroj: | Journal of Economic Entomology |
| ISSN: | 1938-291X 0022-0493 |
| Popis: | The lesser mealworm, Alphitobius diaperinus (Panzer, 1797) (Coleoptera: Tenebrionidae), is considered the primary insect pest in broiler farms in Brazil. In this study, we characterized the susceptibility of A. diaperinus populations from broiler farms of southern Brazil to cypermethrin and chlorpyrifos. Larvae and adults of A. diaperinus were exposed to these technical insecticides diluted in acetone in residual bioassays. A geographic variation in the susceptibility of larvae and adults of A. diaperinus to both insecticides was detected. The larval LC50 for cypermethrin ranged from 0.43 to 7.33 µg a.i./cm2. Two populations from Santa Catarina state presented higher resistance ratios of 13.6- and 17-fold. When adults were exposed to cypermethrin, the LC50 ranged from 0.46 to 4.93 µg a.i./cm2, with population SC-3 from Santa Catarina having lower susceptibility (resistance ratio of 10.7-fold). When exposed to chlorpyrifos, A. diaperinus larvae present LC50 values ranging from 0.21 to 4.30 µg a.i./cm2. Larvae from Paraná and Santa Catarina (SC-1 population) presented the highest resistance ratios, ranging from 10- to 20-fold. In adults, the LC50 of chlorpyrifos ranged from 0.17 to 5.30 µg a.i./cm2, showing a maximum resistance ratio of 31-fold in a population from Paraná state. Based on LC99 values, candidate diagnostic concentrations of 15 and 12 µg a.i./cm2 of cypermethrin and chlorpyrifos, respectively, were also estimated for the resistance monitoring of A. diaperinus in Brazil. The implications of these results in Insect Resistance Management are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|