Design of a Bacillus thuringiensis-Based Formulation That Increases Feeding Preference on Spodoptera exigua (Lepidoptera: Noctuidae) Larvae

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-09-15T00:31:06Z
Fecha de publicación2009-02-01
ResumenA Bacillus thuringiensis (Bt)-based formulation intended to increase feeding response in Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) was developed. Eight matrices were prepared from natural ingredients and confronted with fresh maize leaves to select one highly palatable to larvae. The selected matrix was combined with Bt HD-125 strain at three different concentrations (30, 70, and 100 g/kg) of the spore-crystal complex to elaborate three insecticidal formulations. Effects caused by the matrix, including palatability, any adverse effect, and reduction in toxic activity of the strain, were tested on the formulations. Results indicated that the blend of modified cornstarch, porcine gelatin, and dried corncob was the most preferred by larvae. Formulations obtained were evaluated in mortality bioassays with neonate larvae in laboratory, using artificial diet, and in the greenhouse, with maize, Zea mays L., plants to compare their effectiveness when applied to natural food. In laboratory tests, all formulations, including a commercial formulation, were ingested by larvae causing high mortality in neonate larvae; in the greenhouse tests, formulations were also ingested causing mortality in larvae, overcoming commercial formulation effectiveness. Results suggest that the selected matrix combined with Bt 70 g/kg is the most suitable formulation to achieve effective control because this concentration acts faster than the lower concentration and is equal than the higher concentration. This formulation, designed specifically against a particular pest, is highly effective and offers a high potential for effective pest control.es_ES
Doihttps://doi.org/10.1603/029.102.0109es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/2793
Idiomaenes_ES
EditorialOxford University Presses_ES
RelaciónJournal of Economic Entomologyes_ES
URL relacionadohttps://doi.org/10.1603/029.102.0109es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteJournal of Economic Entomology
Palabra claveBacillus thuringiensises_ES
Palabra claveBiologyes_ES
Palabra claveNoctuidaees_ES
Palabra claveExiguaes_ES
Palabra claveLepidoptera genitaliaes_ES
Palabra clavePEST analysises_ES
Palabra claveSpodopteraes_ES
Palabra claveWettable powderes_ES
Palabra claveToxicologyes_ES
Palabra claveLarvaes_ES
Palabra claveFood sciencees_ES
Palabra claveHorticulturees_ES
ClasificaciónInsect Resistance and Geneticses_ES
TítuloDesign of a Bacillus thuringiensis-Based Formulation That Increases Feeding Preference on Spodoptera exigua (Lepidoptera: Noctuidae) Larvaees_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorRosas-García, Ninfa M.
AutorVillegas-Mendoza, Jesús M.
AutorTorres-Ortega, Jorge Alberto
AutorRosas-García, Ninfa M.es_ES
AutorVillegas-Mendoza, Jesús M.es_ES
AutorTorres-Ortega, Jorge Albertoes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número1es_ES
Rango de páginas58-63es_ES
URL relacionadahttps://doi.org/10.1603/029.102.0109
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen102es_ES

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