DACyTAr - Datos Primarios en Acceso Abierto de la Ciencia y la Tecnología Argentina

Egg parasitoid assemblages and their effectiveness on soybean defoliator Lepidoptera in the subtropical producing area of Argentina

Compartir en
redes sociales


Registro completo

Título
Egg parasitoid assemblages and their effectiveness on soybean defoliator Lepidoptera in the subtropical producing area of Argentina
Autor(es)
Afiliación(es) del/de los autor(es)
Valverde, Liliana. Fundación Miguel Lillo; Argentina
Van Nieuwenhove, Guido Alejandro. Fundación Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
Virla, Eduardo Gabriel. Fundación Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
Resumen
Soybean is one of the most important crops worldwide; However, its annual yield is strongly affected by lepidopteran caterpillar. Nowadays, the main control for this pest species is based on the use of broad-spectrum insecticides affecting human health and increasing environmental contamination. Therefore, others sustainable methods of control, such as biological control are in demand. Hence, the present study aimed to identify the egg parasitoids guild for the soybean defoliator lepidopteran species in the subtropical areas of South America and to determine its effectiveness during three consecutive soybean seasons. Soybean A-8000 RG (GM VIII) variety was sown in a commercial soybean field (80 ha.) located in Leales, Tucumán, Argentina. Every week, 20 soybean plants were randomly collected and carried out to laboratory, to search lepidopteran eggs. During the three crop seasons, soybeans were attacked by Anticarsia gemmatalis, Rachiplusia nu, and Chrysodeixis includens. Six egg parasitoid species were identified, but only three of them were important (by frequency and abundance). Trichogramma pretiosum has the higher effectiveness in control all lepidopteran pest across soybean phenological stages. In contrast, E. porteri prefers to parasitize R. nu eggs while T. cyamophylax parasitized no C. includens eggs. The defoliating Lepidoptera eggs showed high levels of parasitism despite applying insecticides in soybean fields. Therefore, using conservative tactics leads to higher rates of natural control.
Año de publicación
Idioma
español
Formato (Tipo MIME)
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Clasificación temática de acuerdo a la FORD
Ciencias biológicas
Condiciones de uso
Disponible en acceso abierto bajo licencia Creative Commons https://creativecommons.org/licenses/by/2.5/ar/
Repositorio digital
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas

Citación

Valverde, Liliana Van Nieuwenhove, Guido Alejandro Virla, Eduardo Gabriel (): Egg parasitoid assemblages and their effectiveness on soybean defoliator Lepidoptera in the subtropical producing area of Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas, http://hdl.handle.net/11336/174834.

Exportar cita