Skip to Main content Skip to Navigation
Theses

Virus manipulateurs du comportement des insectes : prévalence et influence sur la structure des communautés hôtes : exemple de l’association Leptopilina boulardi / LbFV

Sabine Patot 1
1 Génétique et évolution des interactions hôtes-parasites
GINSENG - Département génétique, interactions et évolution des génomes [LBBE]
Abstract : Eukaryots/microorganisms symbiosis is an important source of evolutionary novelty and ecological diversification. These associations are widespread in insects, particularly in parasitoids (insects that parasitize other insects) where a broad diversity of vertically transmitted viruses are found. However, their direct and indirect effects on host community are poorly understood. In this thesis, we used a system involving a Drosophila parasitoid, Leptopilina boulardi and a heritable virus LbFV that manipulates the behaviour of the parasitoid by increasing its tendency to lay eggs in a host that is already parasitized (superparasitism). Using a viral molecular marker developed in this work, we showed very high prevalences of the virus in L. boulardi populations. Additionally, we found a strong effect of the virus on interspecific competition in the Drosophila parasitoid community. The integrative approach of this work is an important step in understanding the role of heritable viruses in parasitoid ecology and evolution
Document type :
Theses
Complete list of metadatas

Cited literature [266 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00451287
Contributor : Abes Star :  Contact
Submitted on : Thursday, January 28, 2010 - 4:51:01 PM
Last modification on : Monday, February 10, 2020 - 4:36:55 PM
Long-term archiving on: : Friday, June 18, 2010 - 5:12:55 PM

File

2009LYO10103_0_0.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00451287, version 1

Collections

Citation

Sabine Patot. Virus manipulateurs du comportement des insectes : prévalence et influence sur la structure des communautés hôtes : exemple de l’association Leptopilina boulardi / LbFV. Sciences agricoles. Université Claude Bernard - Lyon I, 2009. Français. ⟨NNT : 2009LYO10103⟩. ⟨tel-00451287⟩

Share

Metrics

Record views

514

Files downloads

2321