title: The cypovirus Diadromus pulchellus RV-2 is sporadically associated with the endoparasitoid wasp D. pulchellus and modulates the defence mechanisms of pupae of the parasitized leek-moth, Acrolepiopsis assectella.
abstract: Diadromus pulchellus is a solitary endoparasitoid wasp that parasitizes the pupae of the leek-moth, Acrolepiosis assectella (Lepidoptera). Hitherto, every individual D. pulchellus from France that has been investigated was infected by an orthoreovirus, DpRV-1, and an ascovirus, DpAV-4. Recently, a new strain of D. pulchellus, established from a French field population, was found to be able to develop on leek-moth pupae, but lacked both DpRV-1 and DpAV-4. However, all these wasps were infected with a new cypovirus, DpRV-2. This cypovirus is transmitted to the A. assectella pupae at each wasp oviposition and is replicated mainly in the gut cells of the parasitized pupae. DpRV-2, like the ascovirus DpAV-4, is able to inhibit the defence reaction of A. assectella pupae and so contributes to the parasitic success of D. pulchellus wasps.
authors.affiliation: Laboratoire d'Etude des Parasites Génétiques, CNRS-FRE 2535, Université François Rabelais, UFR des Sciences et Techniques, Parc Grandmont, 37200 Tours, France.
authors.forename: Sylvaine
authors.initials: S
authors.lastname: Renault
authors.affiliation: Laboratoire d'Etude des Parasites Génétiques, CNRS-FRE 2535, Université François Rabelais, UFR des Sciences et Techniques, Parc Grandmont, 37200 Tours, France.
authors.forename: Sylvie
authors.initials: S
authors.lastname: Bigot
authors.affiliation: Service de Microscopie Electronique, Université François Rabelais, UFR de Médecine, 2 bis Boulevard Tonnellé, 37032 Tours, France.
authors.forename: Monique
authors.initials: M
authors.lastname: Lemesle
authors.affiliation: Service de Microscopie Electronique, Université François Rabelais, UFR de Médecine, 2 bis Boulevard Tonnellé, 37032 Tours, France.
authors.forename: Pierre-Yves
authors.initials: PY
authors.lastname: Sizaret
authors.affiliation: Laboratoire d'Etude des Parasites Génétiques, CNRS-FRE 2535, Université François Rabelais, UFR des Sciences et Techniques, Parc Grandmont, 37200 Tours, France.
authors.forename: Yves
authors.initials: Y
authors.lastname: Bigot
mesh_terms: D000818:Animals; D005260:Female; D006790:Host-Parasite Interactions; D008854:Microscopy, Electron; D009036:Moths / Q000469:parasitology* / Q000502:physiology / Q000821:virology*; D011679:Pupa / Q000469:parasitology / Q000648:ultrastructure / Q000821:virology; D012087:Reoviridae / Q000145:classification / Q000302:isolation & purification / Q000502:physiology*; D014863:Wasps / Q000472:pathogenicity* / Q000502:physiology / Q000821:virology*