Fecha/hora: 12/05/2024 17:00:00

Biblioteca(s): | INIA La Estanzuela; INIA Las Brujas.
Fecha corriente: | 26/09/2014
Fecha de la última actualización: | 24/11/2015
Autoria: | PETZOLD-MAXWELL, J.L.; CIBILS-STEWART, X.; FRENCH , B.W.; GASSMANN, A.J.
Afiliación: | JENNIFER L. PETZOLD-MAXWELL, Universidad de Iowa State (ISU); XIMENA CIBILS-STEWART, Universidad de Kansas State (KSU); B. WADE FRENCH, USDA-ARS (Agricultural Research Service); AARON J. GASSMANN, Universidad de Iowa State (ISU).
Título: | Adaptation by western corn rootworm (Coleoptera: Chrysomelidae) to Bt maize: inheritance, fitness costs, and feeding preference.
Año de publicación: | 2012
Fuente/Imprenta: | Journal of Economic Entomology, v.105, n.4, p.1407-1418, 2012
ISSN: | 0022-0493
DOI: | 10.1603/EC11425

Idioma:

Español
Inglés

Contenido:

ABSTRACT.

We examined inheritance of resistance, feeding behavior, and Þtness costs for a laboratory-selected strain of western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), with resistance to maize (Zea maize L.) producing the Bacillus thuringiensis Berliner (Bt) toxin Cry3Bb1. The resistant strain developed faster and had increased survival on Bt maize relative to a susceptible strain. Results from reciprocal crosses of the resistant and susceptible strains indicated that inheritance of resistance was nonrecessive. No Þtness costs were associated with resistance alleles in the presence of two entomopathogenic nematode species, Steinernema carpocapsae Weiser and Heterorhabditis bacteriophora Poinar. Larval feeding studies indicated that the susceptible and resistant strains did not differ in preference for Bt and non-Bt root tissue in choice assays.

Palabras-Clave: | COMPORTAMIENTO ALIMENTARIO; GUSANO DE LA RAIZ; MAIZ DEL OESTE; MAÍZ TRANSGÉNICO; RESISTENCIA A LAS PLAGAS.
Thesagro: | PLAGAS DE LAS PLANTAS.
Categoría del tema: | H10 Plagas de las plantas
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (100856-1) - PXI - AP - PP - PP/Jr.Economic Entomology/2012 -  -  - DIS