Renault Sylvaine, Petit Agnès, Bénédet Fabrice, Bigot Sylvie, Bigot Yves. 2002. Effects of the Diadromus pulchellus ascovirus, DpAV-4, on the hemocytic encapsulation response and capsule melanization of the leek-moth pupa, Acrolepiopsis assectella. Journal of Insect Physiology, 48 (3) : 297-302.
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Liste HCERES des revues (en SHS) : oui
Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie
Résumé : DpAV-4 is a symbiotic ascovirus found in natural populations of the solitary endoparasitoid wasp Diadromus pulchellus. The female wasp injects this virus into the pupae of the leek-moth Acrolepiopsis assectella during oviposition. The ascovirus replicates in the pupal tissues and the consequent lysis of the cells occurs synchronously with egg hatching and the development of the wasp larva. We show here that encapsulation and capsule melanization were activated when minute nylon monofilaments were implanted into the hemocoel of non parasitized leek-moth pupae and that encapsulation and melanization were inhibited in pupae parasitized by D. pulchellus. When the pupae were infected by DpAV-4, melanization of the nylon monofilaments was abolished, but a capsule was still always formed. These results indicate that DpAV-4 is a free virus able to alter the defence system of the parasitized host so as to improve the development of the parasitoid wasp, D. pulchellus.
Classification Agris : H10 - Ravageurs des plantes
L50 - Physiologie et biochimie animales
Auteurs et affiliations
- Renault Sylvaine, Université de Tours (FRA) - auteur correspondant
- Petit Agnès, Université de Tours (FRA)
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Bénédet Fabrice, Université de Tours (FRA)
ORCID: 0000-0001-9281-5677
- Bigot Sylvie, Université de Tours (FRA)
- Bigot Yves, CIRAD-TERA-ERE (FRA)
Source : Cirad-Agritrop (https://agritrop.cirad.fr/589108/)
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