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Título

Interactions between an ectoparasitoid and a nucleopolyhedrovirus when simultaneously attacking Spodoptera exigua (Lepidoptera: Noctuidae)

Autor Stoianova, E.; Williams, Trevor G.; Cisneros, Juan; Muñoz, Delia ; Murillo, Rosa ; Tasheva, Elena; Caballero, Primitivo
Palabras clave Euplectrus plathypenae
Nucleopolyhedrovirus
Parasitoid–pathogen interaction
Spodoptera exigua
Biological control
Fecha de publicación 2012
EditorBlackwell Publishing
Citación Journal of Applied Entomology 136(8): 596-604 (2012)
ResumenInsect pathogenic viruses and parasitoids represent distinct biological entities that exploit a shared host resource and have similar effects in suppressing host populations. This study explores the interactions between the ectoparasitoid Euplectrus plathypenae (Hymenoptera: Eulophidae) and the Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) in larvae of S. exigua (Lepidoptera: Noctuidae). Parasitoid progeny failed to complete development in hosts that had been infected prior to parasitism. However, infection of S. exigua fourth instars at 48h post-parasitism had no significant effects on the survival of parasitoid progeny. Larval and pupal development times of E. plathypenae that survived on virus-infected S. exigua did not differ significantly from that of parasitoids on healthy hosts. Virus-induced mortality and the production of occlusion bodies were very similar in parasitized and non-parasitized S. exigua. The virus was genetically stable over three passages in parasitized and unparasitized hosts. These results suggest that applications of SeMNPV-based insecticides are unlikely to disrupt pest control exerted by the parasitoid E. plathypenae in biological pest control programs as long as virus applications are timed not to coincide with parasitoid releases. © 2011 Blackwell Verlag, GmbH.
URI http://hdl.handle.net/10261/97604
DOI10.1111/j.1439-0418.2011.01691.x
Identificadoresdoi: 10.1111/j.1439-0418.2011.01691.x
issn: 0931-2048
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