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Registros recuperados: 4
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A phylogeny of Drosophilidae using the Amyrel gene: questioning the Drosophila melanogaster species group boundaries Inra
Da Lage, J.L.; Kergoat, G.; Maczkowiak, F.; Silvain, J.F.; Cariou, M.L.; Lachaise, D..
In this study, the phylogenetic relationships of 164 species of the family Drosophilidae are discussed, using the Amyrel gene, a member of the α-amylase multigene family. This study focuses on numerous species groups in the subgenera Sophophora and Drosophila of the genus Drosophila but also includes other closely related genera. Nucleotide data were analysed by several methods: maximum parsimony, neighbour joining, maximum likelihood and Bayesian inference. Heterogeneity of base composition (mainly low GC contents in the species groups willistoni and saltans) has been addressed. In all analyses, the genus Drosophila appeared paraphyletic. The subgenus Sophophora clearly appeared to be a monophyletic group, showing well-resolved clades, with the...
Tipo: Journal Article Palavras-chave: PHYLOGENIE MOLECULAIRE; DIPTERA; CLASSIFICATION MOLECULAR PHYLOGENY; ZAPRIONUS; ANANASSAE SPECIES GROUP; MONTIUM SPECIES GROUP; BASE COMPOSITION BIAS; SOPHOPHORA.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008df66ad2f&uri=/notices/prodinra1/2008/08/
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Differences in sex pheromone communication systems of closely related species : Spodoptera latifascia (Walker) and S. descoinsi Lalanne-Cassou and Silvain (Lepidoptera : Noctuidae) Inra
Monti, L.; Lalanne-Cassou, B.; Lucas, P.; Malosse, C.; Silvain, J.F..
S. latifascia and S. descoinsi are closely related species that occur sympatrically over limited areas in French Guiana. We examined allopatric populations, S. latifascia originating from Barbados and S. descoinsi from French Guiana. Studies on nocturnal activity cycles showed temporal partitioning of female calling behavior, male sexual activity, and mating behavior.S. descoinsi were sexually active in the first half of the scotophase whereas S. latifascia were sexually active in the second half. Seven compounds (Z9–14: Ac,Z9,E12–14: Ac,Z11–16: Ac,E9,E12–14: Ac,Z9–14: Ald,Z9,E11–14: Ac andZ11–14: Ac) were identified in females of both S. latifascia and S. descoinsi extracts.Z9–14: Ac was a main pheromone component for the two species. The major difference...
Tipo: Journal Article Palavras-chave: SPODOPTERA; LEPIDOPTERE; NOCTUIDAE; ACTIVITE SEXUELLE; ATTRACTION SEXUELLE; ISOLATION; PHEROMONE SEXUELLE; RYTHME D'ACTIVITE; ELECTROPHYSIOLOGIE; REPRODUCTION LEPIDOPTERA; NOCTUIDAE; SPODOPTERA LATIFASCIA; SPODOPTERA DESCOINSI; PHEROMONES; (Z)-9-TETRADECENYL ACETATE; (Z E)-9 12-TETRADECADIENYL ACETATE; SEXUAL ACTIVITY RHYTHMS; CROSS-ATTRACTION; ELECTROPHYSIOLOGY; REPRODUCTIVE ISOLATION.
Ano: 1995 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9600002138054208&uri=/notices/prodinra1/2010/11/
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INVAGRAINES - Invasions de peuplements forestiers par des insectes séminiphages exotiques : mécanismes, conséquences écologiques et moyens de surveillance Inra
Roques, A.; Auger-Rozenberg, M.A.; Boivin, S.; Cariou, M.L.; Silvain, J.F.; Fady, B..
The project aimed at contributing to understand the ecological and genetic mechanisms underlying the possibilities of establishment of exotic insects in the genus Megastigmus (Hymenoptera: Torymidae), specialized in the exploitation of forest seeds, and at defining suitable methods of monitoring and management of the invasive insect populations. For that, we intended to compare two distinct models host seed/ Megastigmus, crossing different first date of invasion and taxonomic structure of the forests: (i) true firs (Abies)/Megastigmus where the resource, indigenous, is exploited by a native species, M. suspectus, in competition with at least 5 invasive species of North American origin, and (ii) true cedars (Cedrus)/Megastigmus where the resource, itself...
Tipo: Conference Paper Palavras-chave: HYMENOPTERE; HYMENOPTERA; MEGASTIGMUS; CHALCIDIEN; ESPECE EXOTIQUE INVASIVE ; INVASION; INSECTE NUISIBLE; IMPACT ECOLOGIQUE; REGENERATION NATURELLE.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009f77d8ad&uri=/notices/prodinra1/2010/05/
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When insects help to resolve plant phylogeny: evidence for a paraphyletic genus Acacia from the systematics and host-plant range of their seed-predators Inra
Kergoat, G.; Silvain, J.F.; Buranapanichpan, S.; Tuda, M..
In this study we use an indirect method to address the issue of the systematics of the large and economically important genus Acacia (Leguminosae, Mimosoideae, Acacieae). We propose the use of host-preference data in closely related insect species as a potentially useful tool to investigate host systematic issues, especially when other approaches yield inconsistent results. We have examined the evolution of host-plant use of a highly specialized group of seed-feeders who predate Acacia — the seed-beetles (Coleoptera, Chrysomelidae, Bruchinae). First, the evolution of host-plant preferences in a large clade of Bruchidius species was investigated using molecular phylogenetics and character optimization methods. Second, the scope of our study was enlarged by...
Tipo: Journal Article Palavras-chave: BAYESIAN-INFERENCE; SEQUENCE ALIGNMENT.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200832c443cb&uri=/notices/prodinra1/2008/08/
Registros recuperados: 4
Primeira ... 1 ... Última
 

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