Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free: https://www.ghostery.com/fr/products/

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site: http://www.youronlinechoices.com/fr/controler-ses-cookies/, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Realytics
Google Analytics
Spoteffects
Optimizely

Targeted advertising cookies

DoubleClick
Mediarithmics

The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at cil-dpo@inra.fr or by post at:

INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu INRA LOGO_MUSE

Home page

Integrative biology of host-parasitoid interactions (B2iHP)

bandeau B2iHP

Crédit photos : M Ravallec, M Frayssinet, INRA, DGIMI

Research project

The B2iHP team studies the molecular interactions between parasitic wasps and their insect hosts. We are more specifically interested in Ichneumonid wasps which develop inside other insects (endoparasitoids) and which are associated with symbiotic viruses resulting from virus domestication during evolution. In these models, viruses are required for successful parasitism as they manipulate host physiology to render the host suitable for parasitoid development.

The biological model we are particularly addressing are:

  • Hyposoter didymator, a natural parasitoid of Helicoverpa armigera larvae. This wasp species is associated with the symbiotic polydnavirus Hyposoter didymator IchnoVirus (HdIV). For this model a number of genomic tools are today available, we are starting to have good knowledge on some of the mechanisms involved, but we still have little population or ecological data. 
  • Venturia canescens, a parasitoid of larvae of Lepidoptera from the Pyralidae family, notably the Ephestia kuehniella flour moth. The parasite success of this species relies on the presence of virus-like particles (VLPs) that are produced in the ovaries of the wasp. 

In the team, we conduct genomic and functional studies to decipher the molecular mechanisms governing host-parasitoid interactions.

Our research topics are:

1. Functional characterization of the viral and wasp factors involved in success of parasitism;

2. Diversity and evolution of symbiotic viruses and other factors involved in the virulence of parasitoids;

3. The role of symbiotic viruses in the adaptation of parasitoids to their hosts.

The outputs of our research have an application in plant protection:  use of parasitoids or their products as biological control tools.

logo B2IHP

Main collaborations  

National 

JM DREZEN, Institute of Insect Biology Research (IRBI), Tours

M POIRIE, Sophia Agrobiotech Institute (ISA), Sophia-Antipolis

D BOURGUET, Biology Center for Population Management (CBGP), Montpellier

F LEGEAI & S ROBIN, BioInformatics Platform for Agroecosystem Arthropods (BIPAA); Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Rennes

International

M CUSSON, Canadian Forest Service, Canada

FL CONSOLI, Departamento de Entomologia e Acarologia, Brésil

DA STOLTZ, Dalhousie University, Canada

M TAMO, CGIAR & A BOKONON GANTA, Université d’Abomey-Calavi, Bénin

BA WEBB, University of Kentucky, USA

A CUSUMANO, University of Palermo, Italy; Wageningen University, The Netherlands

 

Participation in networks

EMBA (Ecological management of bioagressors in agrosystems)

ADALEP (Adaptation to the biotic environment in lepidoptera),

REID (Ecology of sustainable interactions),

IMH (Microorganism-host interactions)

 

Education

Supervision of students (L3, M1, M2, PhD)

Participation to M1 and M2 courses, University of Montpellier

Participation to Master committees