DESARROLLO DE EFECTIVOS INSECTICIDAS BASADOS EN BACULOVIRUS CON AMPLIADO ESPECTRO DE HUESPEDES Y AVANCES HACIA SU INTEGRACION EN PROGRAMAS IPM

AGL2017-83498-C2-1-R

Nombre agencia financiadora Agencia Estatal de Investigación
Acrónimo agencia financiadora AEI
Programa Programa Estatal de I+D+i Orientada a los Retos de la Sociedad
Subprograma Programa Estatal de I+D+i Orientada a los Retos de la Sociedad
Convocatoria Retos Investigación: Proyectos I+D+i
Año convocatoria 2017
Unidad de gestión Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016
Centro beneficiario UNIVERSIDAD PUBLICA DE NAVARRA
Identificador persistente http://dx.doi.org/10.13039/501100011033

Publicaciones

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The role of Chrysoperla carnea (Steph.) (neuroptera: Chrysopidae) as a potential dispersive agent of noctuid baculoviruses

Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
  • Gutiérrez Cárdenas, Oscar Giovanni
  • Adán, Ángeles
  • 0000-0002-6681-6139
  • Medina, Pilar
  • 0000-0003-0065-9625
  • Garzón, Agustín
Baculoviruses (BV) are highly effective against lepidopteran pests of economic importance such as Spodoptera exigua. The combined use of entomopathogens and macrobiological control agents requires the study of their relationships. Laboratory bioassays were developed to evaluate the interactions between the multiple nucleopolyhedroviruses of S. exigua (SeMNPV) and Autographa californica (AcMNPV), and the predator Chrysoperla carnea. The microscopic examination of predator’s excreta (larval drops and meconia) after the ingestion of BV-infected S. exigua revealed the presence of viral occlusion bodies (OBs). The reinfection of S. exigua larvae with BVs-contaminated excreta by using OBs water suspensions or by direct application both yielded high mortality values but different speed-of-kill results. Meconia killed before in suspensions due to their higher viral load and larval excretion drops did so in direct application due to their liquid nature and their easiness of consumption. The prey-mediated ingestion of SeMNPV and AcMNPV triggered slight effects in C. carnea, which were probably derived from the food nutritional quality. Chrysoperla carnea larvae did not discriminate between healthy and BV-infected S. exigua, while a preference was shown for S. exigua (healthy or infected) vs. Macrosiphum euphorbiae. Our findings present C. carnea, and particularly its larvae, as a promissory candidate for BV dispersion in the field., This research was funded by Spanish Ministry of Science, Iinnovation and Universitites, grant number AGL2017-83498-C2-1-R and AGL2017-83498-C2-R awarded to Primitivo Caballero and Pilar Medina, respectively. O. G. Gutiérrez-Cárdenas acknowledges the Government of Mexico and the National Council of Science and Technology (CONACYT) for the Ph.D. research grant (no. of scholarship 717840-2018).