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Gwenaëlle Genson
Institut national de la recherche agronomique
32Publications
15H-index
728Citations
Publications 32
Newest
#1Fernando Henrique Antoniolli Farache (USP: University of São Paulo)H-Index: 5
#2Astrid Cruaud (INRA: Institut national de la recherche agronomique)H-Index: 10
Last.Rodrigo Augusto Santinelo Pereira (USP: University of São Paulo)H-Index: 16
view all 5 authors...
Sycophaginae is a group of non-pollinating fig wasps considered closely related to the fig pollinators (Agaoninae, Tetrapusiinae, and Kradibiinae) in the most recent phylogenetic analyses. They occur in all tropical regions and are associated with Ficus subgenera Urostigma and Sycomorus. There are six described genera of Sycophaginae, and two are native and confined to the Neotropics, namely Idarnes Walker, 1843 and Anidarnes Boucek, 1993. Genus Idarnes is divided into three morphologically dist...
2 CitationsSource
#1F. Al khatib (University of Nice Sophia Antipolis)H-Index: 1
#2Astrid Cruaud (INRA: Institut national de la recherche agronomique)H-Index: 10
Last.Gérard DelvareH-Index: 11
view all 7 authors...
Background The ecological differentiation of insects with parasitic life-style is a complex process that may involve phylogenetic constraints as well as morphological and/or behavioural adaptations. In most cases, the relative importance of these driving forces remains unexplored. We investigate here this question for the “Eupelmus urozonus species group” which encompasses parasitoid wasps of potential interest in biological control. This was achieved using seven molecular markers, reliable reco...
9 CitationsSource
#1F. Al khatibH-Index: 1
#2Astrid CruaudH-Index: 12
Last.Gérard DelvareH-Index: 11
view all 7 authors...
#1Fabien L. CondamineH-Index: 23
Last.Gael J. KergoatH-Index: 22
view all 6 authors...
One hundred and fifty years after Alfred Wallace studied the geographical variation and species diversity of butterflies in the Indomalayan-Australasian Archipelago, the processes responsible for their biogeographical pattern remain equivocal. We analysed the macroevolutionary mechanisms accounting for the temporal and geographical diversification of the charismatic birdwing butterflies (Papilionidae), a major focus of Wallace’s pioneering work. Bayesian phylogenetics and dating analyses of the ...
28 CitationsSource
#1Gael J. Kergoat (SupAgro)H-Index: 22
#2Bruno Le Ru (University of Paris-Sud)H-Index: 19
Last.Alex DelobelH-Index: 10
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Abstract Seed beetles are a group of specialized chrysomelid beetles, which are mostly associated with plants of the legume family (Fabaceae). In the legume-feeding species, a marked trend of phylogenetic conservatism of host use has been highlighted by several molecular phylogenetics studies. Yet, little is known about the evolutionary patterns of association of species feeding outside the legume family. Here, we investigate the evolution of host use in Spermophagus , a species-rich seed beetle...
4 CitationsSource
#1Andrea S. Meseguer (SupAgro)H-Index: 9
#2Armelle Coeur d'acier (SupAgro)H-Index: 13
Last.Emmanuelle Jousselin (SupAgro)H-Index: 24
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Aim Scenarios of aphid evolution suggest that adaptation to host plants plays a major role in aphid diversification. It is therefore commonly assumed that host association has also shaped the biogeographical patterns of aphids; particularly, it has been hypothesized that the intercontinental disjunctions observed in the Holarctic for many aphid groups resulted from the disappearance or migration of their hosts. We explored this hypothesis for the conifer-feeding genus Cinara, one of the most div...
19 CitationsSource
#1Alex DelobelH-Index: 10
#2Bruno Le Ru (University of Paris-Sud)H-Index: 19
Last.Gael J. Kergoat (SupAgro)H-Index: 22
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Bruchidius Schilsky is a large paraphyletic genus of seed beetles (Coleoptera: Chrysomelidae: Bruchinae) which consists of multiple lineages that are usually associated with narrow sets of host-plants. In this study we focus on a group that mostly develops on wattle trees (acacias) belonging to the genus Vachellia Wight & Arn . This group originally included nine species and was designated as the Bruchidius centromaculatus (Allard) species group, but recent phylogenetic analyses revealed that th...
3 CitationsSource
#1Bruno Le Ru (ICIPE: International Centre of Insect Physiology and Ecology)H-Index: 19
#2Alex DelobelH-Index: 10
Last.Gael J. Kergoat (SupAgro)H-Index: 22
view all 5 authors...
A small group of six morphologically related seed beetles (Coleoptera: Chrysomelidae: Bruchinae) belonging to the Conicobruchus genus is reviewed. Species in this group for which host-plants are known feed on various species of Crotalaria (Fabaceae, Crotalarieae). Here we provide diagnoses and a dichotomous key for all six species. The following synonymies are proposed: Conicobruchus cicatricosus (Fahraeus, 1839) (= Bruchus cicatricosus pallidioripennis Pic, 1941) syn. nov.; Conicobruchus strang...
2 CitationsSource
#1Gael J. Kergoat (SupAgro)H-Index: 22
#2Patrice Bouchard (AAFC: Agriculture and Agri-Food Canada)H-Index: 15
Last.Fabien L. Condamine (University of Gothenburg)H-Index: 23
view all 9 authors...
Background As attested by the fossil record, Cretaceous environmental changes have significantly impacted the diversification dynamics of several groups of organisms. A major biome turnover that occurred during this period was the rise of angiosperms starting ca. 125 million years ago. Though there is evidence that the latter promoted the diversification of phytophagous insects, the response of other insect groups to Cretaceous environmental changes is still largely unknown. To gain novel insigh...
25 CitationsSource
#1Gael J. Kergoat (SupAgro)H-Index: 22
#2Laurent Soldati (SupAgro)H-Index: 6
Last.Fabien L. Condamine (SupAgro)H-Index: 23
view all 8 authors...
Insect diversity represents about 60% of the estimated million-and-a-half described eukaryotic species worldwide, yet comprehensive and well-resolved intra-ordinal phylogenies are still lacking for the majority of insect groups. This is the case especially for the most species-rich insect group, the beetles (Coleoptera), a group for which less than 4% of the known species have had their DNA sequenced. In this study, we reconstruct the first higher level phylogeny based on DNA sequence data for t...
30 CitationsSource
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