Baseline toxicity and field efficacy of metaflumizone on Colorado potato beetle (Coleoptera: Chrysomelidae).
J Econ Entomol
; 105(1): 207-13, 2012 Feb.
Article
em En
| MEDLINE
| ID: mdl-22420273
ABSTRACT
Baseline toxicity levels to a novel semicarbazone insecticide, metaflumizone were established for 25 field populations of Colorado potato beetle, Leptinotarsa decemlineata Say (Coleoptera Chrysomelidae),from North America. Excluding the susceptible laboratory strain, 50% lethal concentrations of metaflumizone ranged from 0.57 to 1.31 ppm, while response slopes ranged from 1.92 to 4.24 (average = 2.93), and were unrelated to the 50% lethal concentration (r = 0.06; P = 0.76). Beetle populations with known resistance to the neonicotinoid imidacloprid also exhibited the highest LC50 levels to metaflumizone suggesting at least the possibility of cross-resistance. Additional experiments using a potato leaf-dip bioassay as well as field efficacy evaluations confirmed the high level of toxicity of metaflumizone to L. decemlineata and demonstrated a potential benefit of tank mixing a low rate of the pyrethroid esfenvalerate with metaflumizone at one-tenth the recommended field rate. These research findings confirm that metaflumizone is highly active against L. decemlineata larvae and adults and could provide an effective alternative insecticide for potato pest management.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Semicarbazonas
/
Besouros
/
Controle de Insetos
/
Inseticidas
Tipo de estudo:
Evaluation_studies
Limite:
Animals
País/Região como assunto:
America do norte
Idioma:
En
Revista:
J Econ Entomol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos