WAROT , Sylvie

Simple Summary: Augmentative biological control relies on the more or less frequent/abundant releases of biological control agents (BCAs) that have to be adapted to their short-term local environment including (micro-)climatic conditions. Thermal biology of BCAs is thus a key component for their success. The extent to which thermal tolerance...

L'interaction entre un auxiliaire de lutte biologique, Psyttalia lounsburyi, et une bactérie endosymbiotique, Wolbachia, est à l'étude. Cet article aborde trois volets complémentaires à des résultats déjà publiés ou en cours de valorisation: (i) la caractérisation moléculaire multi-locus des deux variants bactériens connus, (ii) la mise au...

The binary toxin (Bin) from Bacillus sphaericus exhibits a highly insecticidal activity against Culex and Anopheles mosquitoes. The cytotoxicity of Bin requires an interaction with a specific receptor present on the membrane of midgut epithelial cells in larvae. A direct correlation exists between binding affinity and toxicity. The toxin binds...

International audience

We report the first detection of Trissolcus mitsukurii in France. More than 1860 sentinel egg masses of Halyomorpha halys (BMSB) were exposed in the field during the 2018–2020 period, and 12 specimens of T. mitsukurii emerged from one egg mass. Their taxonomic identification was confirmed both by morphological and molecular analysis. Trissolcus...

Cucurbitaceae represent an important part of the vegetable production in Martinique. One of the main pest on these crops is the melonworm, Diaphana hyalinata. With the final objective of defining sustainable strategies for the management of this pest with low quantities of pesticides, an inventory of the Trichogramma egg parasitoids was...

A bstract The rise of the Asian chestnut gall wasp Dryocosmus kuriphilus in France has benefited the native community of parasitoids originally associated with oak gall wasps by becoming an additional trophic subsidy and therefore perturbing population dynamics of local parasitoids. However, the successful biological control of this pest has...

In the framework of biological control, the selection of effective natural enemies determines the final pest control. Thus, the genetic improvement of biocontrol agents could enhance the efficiency of biocontrol programs. Although promising, this approach has rarely been applied in this field. At the intraspecific level, hybridization between...

Telenomus kolbei is newly reported in France, parasitizing two new host species: Aglais io and Nymphalis antiopa. Oviposition by the parasitoid into eggs of both species was observed. Films were made, to which links are given. DNA sequences were obtained and deposited in Genbank.

Les recherches en agronomie reposent souvent sur l'utilisation de ressources biologiques gérées de façon très variable en termes de (i) durée de conservation, (ii) formalisation des procédures, (iii) gestion de l'information et (iv) ouverture à l'extérieur. Dans ce contexte, les CRB (centres de ressources biologiques) représentent un...

Considered as a major pest of Castanea species worldwide, the chestnut gall wasp Dryocosmus kuriphilus Yasumatsu (Hymenoptera, Cynipidae) can induce fruit production losses of 60-80%. Reported for the first time in Italy in 2002, this pest is now widespread across the French distribution of chestnut trees.Based on successful attempts in other...

Context : Considered as one of the most important pest of Castanea species worldwide, the chestnut gall wasp Dryocosmus kuriphilus (Hymenoptera,Cynipidae) can induced fruit production losses from 60 to 80% (EFSA, 2010). Reported for the first time in Europe in 2002 in Italy (Brussino et al., 2002), this pest was detected in France in 2007 and...

Abstract Uncertainty about the taxonomic status and the specificity of a species commonly prevent its consideration as a candidate for biological control of pest organisms. Here we use a combination of molecular analysis and crossing experiments to gather evidence that the parasitoid wasp Ganaspis brasiliensis , a candidate for biological...