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The Opiinae (Hymenoptera, Braconidae) is a sub-family of parasitic wasps that is very species rich and widely distributed over the world. In sub-Saharan Africa, many species are biological control agents of fruit flies (Diptera, Tephritidae), that constitutes major pests for agriculture. The use of Opiinae to control fruit flies in this region is increasingly explored in order to improve agricultural production while limiting the use of pesticides. However, the dearth of knowledges on the identity and diversity of species in this group (generally small 2-5 mm, complex and confusing systematics) are permanent brakes to the understanding of life traits of the species and by extension to their use as natural enemies of fruit flies. In this context, the objective of the project Opi-Syst is to clarify the systematics, the evolution and the biology of the Opiinae by the mean of a combination of traditional systematics methods and the use of high throughput sequencing tools. More precisely, we will i) perform a non-destructive Barcoding campaign based on a wide sampling of collection specimens of Opiinae hosted in museums, ii) reconstruct the phylogenetic relationships of the group at intra and inter-specific levels, iii) explore host-parasites association using improved molecular analysis of gut contents. The outputs of this project will greatly improve the knowledge on the biodiversity and evolution of Opiinae in Sub-Saharan Africa. This corpus of reliable knowledges will irrigate all research programs using Opiinae to improve the development of natural biocontrol of fruit flies in this region.
I am an entomologist working on next generation systematics of phytophagous beetles and parasitic hymenoptera. This integrative approach deals with traditional recognition of species (alpha taxonomy) combined with a molecular examination of relationships at infra specific levels (population genetics) and deep relationships among complex group of insects (molecular phylogenetic). As a CIRAD researcher, my research aims to improve knowledge on identity and biology of African insect species in order to better understand their evolution and the ecosystems services they can provide. To reach this goal, it is critical to be a part of a strong network of collaborators working in this region and to be "on site" to better understand species diversity and ecosystems functioning.
Thierry Brévault, Awa Ndiaye, Djibril Badiane, Amadou Bocar Bal, Mbacké Sembène, Pierre Silvie, Julien Haran, 2018. First records of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in Senegal. Entomologia Generalis, 1-14.
Julien Haran, Jérôme Rousselet, David Tellez, Alain Roques, Géraldine Roux, 2018. Phylogeography of Monochamus galloprovincialis, the European vector of the pinewood nematode. Journal of Pest Science. 91(1), 247-257.
Julien Haran, Jean-Pierre Rossi, Juan Pajares, Luis Bonifacio, Pedro Naves, Alain Roques, Géraldine Roux, 2017. Multi-scale and multi-site resampling of a study area in spatial genetics: implications for flying insect species. PeerJ 5:e4135. Doi: 10.7717/peerj.4135.
Julien Haran, Hélène Perrin, 2017. Revision of the genus Afrosmicronyx Hustache (Coleoptera, Curculionidae, Curculioninae). Zootaxa 4365 (2): 132-148.