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Les chaînes réactionnelles qui provoquent et maintiennent les contacts trophallactiques chez les guêpes sociales National Institute of Agronomic Research
Montagner, Hubert.
Les contacts trophallactiques qui apparaissent comme un des fondements de la vie sociale chez les insectes ont toujours préoccupé les biologistes. Mais on ne sait toujours pas comment se déroulent les échanges de nourriture et quels sont les rôles exacts joués par les pièces buccales et les différents éléments sensoriels mis en jeu. Nous avons entrepris d'éclaircir ces aspects constants et fondamentaux de la vie sociale chez les guêpes du genre Vespa. Pour cela, nous avons filmé systématiquement, en vitesse accélérée, de nombreuses séquences trophallactiques en fonction de l'âge, de la dominance et de la caste des partenaires. L'analyse des films a été faite image par image.
Tipo: Journal Article-postprint Palavras-chave: WASP; SOCIAL INSECT; VESPA; TROPHALLAXIS; BEHAVIOUR; POSITION; MOUTHPART; GUEPE; VESPA; INSECTE SOCIAL; TROPHALLAXIE; COMPORTEMENT; POSTURE; PIECE BUCCALE.
Ano: 1964 URL: http://hdl.handle.net/2174/375
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Observations sur les métamorphoses internes de la guêpe et de l'abeille National Institute of Agronomic Research
Anglas, J..
Thèse, Faculté des Sciences de Paris
Tipo: Book Palavras-chave: HONEYBEE; METAMORPHOSIS; WASP; ABEILLE; METAMORPHOSE; DEVELOPPEMENT; GUEPE.
Ano: 1900 URL: http://hdl.handle.net/2174/523
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One fig to bind them all : host conservatism in a Fig wasp community unraveled by cospeciation analyses among pollinating and nonpollinating fig wasps Inra
Jousselin, E.; van Noort, S.; Berry, V.; Rasplus, J.Y.; Ronsted, N.; Erasmus, J.C.; Greeff, J.M..
The study of chalcid wasps that live within syconia of fig trees (Moraceae, Ficus), provides a unique opportunity to investigatethe evolution of specialized communities of insects. By conducting cospeciation analyses between figs of section Galoglychia andsome of their associated fig wasps, we show that, although host switches and duplication have evidently played a role in theconstruction of the current associations, the global picture is one of significant cospeciation throughout the evolution of thesecommunities. Contrary to common belief, nonpollinating wasps are at least as constrained as pollinators by their host associationin their diversification in this section. By adapting a randomization test in a supertree context, we further confirm that...
Tipo: Journal Article Palavras-chave: ECOLOGIE COMMUNAUTAIRE; GUEPE; HOTE D'UTILISATION; MUTUALISME; RANDOMISATION; SPECIALISATION; SPECIATION COMMUNITY ECOLOGY; FIG WASPS; HOST UTILIZATION; MUTUALISM; PHYLOGENY; RANDOMIZATION; SPECIALIZATION; SUPERTREE.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009fff94508&uri=/notices/prodinra1/2011/06/
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One fig to bind them all : host conservatism in a Fig wasp community unraveled by cospeciation analyses among pollinating and nonpollinating fig wasps Inra
Jousselin, E.; van Noort, S.; Berry, V.; Rasplus, J.Y.; Ronsted, N.; Erasmus, J.C.; Greeff, J.M..
The study of chalcid wasps that live within syconia of fig trees (Moraceae, Ficus), provides a unique opportunity to investigate the evolution of specialized communities of insects. By conducting cospeciation analyses between figs of section Galoglychia and some of their associated fig wasps, we show that, although host switches and duplication have evidently played a role in the construction of the current associations, the global picture is one of significant cospeciation throughout the evolution of these communities. Contrary to common belief, nonpollinating wasps are at least as constrained as pollinators by their host association in their diversification in this section. By adapting a randomization test in a supertree context, we further confirm that...
Tipo: Journal Article Palavras-chave: GUEPE; RAMDOMISATION; SPECIALISATION; SPECIATION COMMUNITY ECOLOGY; FIG WASPS; HOST UTILIZATION; MUTUALISM; PHYLOGENY; RANDOMIZATION; SPECIALIZATION; SUPERTREE.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200944ef9fc2&uri=/notices/prodinra1/2011/06/
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The origin of intraspecific variation of virulence in an eukaryotic immune suppressive parasite. Inra
Colinet, D.; Schmitz, A.; Cazes, D.; Gatti, J.L.; Poirie, M..
Occurrence of intraspecific variation in parasite virulence, a prerequisite for coevolution of hosts and parasites, has largely been reported. However, surprisingly little is known of the molecular bases of this variation in eukaryotic parasites, with the exception of the antigenic variation used by immune-evading parasites of mammals. The present work aims to address this question in immune suppressive eukaryotic parasites. In Leptopilina boulardi, a parasitic wasp of Drosophila melanogaster, well-defined virulent and avirulent strains have been characterized. The success of virulent females is due to a major immune suppressive factor, LbGAP, a RacGAP protein present in the venom and injected into the host at oviposition. Here, we show that an homologous...
Tipo: Journal Article Palavras-chave: EUCARYOTE; SYSTEME IMMUNITAIRE; HYMENOPTERE; GUEPE; FACTEUR DE VIRULENCE; PARASITOIDE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201179a396a9&uri=/notices/prodinra1/2011/04/
Registros recuperados: 5
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