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Toute l'équipe de Dynafor est heureuse de recevoir votre visite sur son site. Vous trouverez ici de nombreuses informations sur nos activités. N'hésitez pas pour autant à nous contacter directement pour plus d'information et nouer des relations. Dynafor est une unité mixte de recherche (UMR) interdisciplinaire dont l'objectif est de générer des connaissances sur les représentations, le fonctionnement écologique, la gestion et la gouvernance des paysages agriforestiers afin de contribuer à la mise en place de pratiques agroécologiques et sylvoécologiques durables. Dynafor associe des chercheurs de 2 départements chez INRAE (ACT et ECODIV), des enseignants chercheurs de l'ENSAT (Ecole Nationale d'Agronomie de Toulouse) ainsi que des enseignants chercheurs de l’École d'ingénieurs de PURPAN.
À L'AFFICHE
Un nouvel article est paru dans Biological Journal of the Linnean Society
Eberle J.; Husemann, M.; Doerfler, I.; Ulrich, W.; Müller, J.; Bouget, C.; Brin, A.; Gossner, M.; Heilmann-Clausen, J.; Isacsson, G.; Krištín, A.; Lachat, T.; Larrieu, L.; Rigling, A.; Schmidl, J.; Seibold, S.; Vandekerkhove, K.; Christian Habel, J. (2021) Molecular biogeography of the fungus-dwelling saproxylic beetle Bolitophagus reticulatus indicates rapid expansion from glacial refugia. Biological Journal of the Linnean Society, XX, 1–13
https://doi.org/10.1093/biolinnean/blab037
Abstract
The geographical distributions of species associated with European temperate broadleaf forests have been significantly influenced by glacial–interglacial cycles. During glacial periods, these species persisted in Mediterranean and extra-Mediterranean refugia and later, during interglacial periods, expanded northwards. The widespread saproxylic beetle Bolitophagus reticulatus depends closely on European temperate broadleaf forests. It usually develops in the tinder fungus Fomes fomentarius, a major decomposer of broadleaf-wood. We sampled B. reticulatus in sporocarps from European beech (Fagus sylvatica) and Oriental beech (Fagus orientalis) across Europe and the Caucasus region. We analysed mitochondrial gene sequences (cox1, cox2, cob) and 17 microsatellites to reconstruct the geographical distribution of glacial refugia and postglacial recolonization pathways. We found only marginal genetic differentiation of B. reticulatus, except for a significant split between populations of the Caucasus region and Europe. This indicates the existence of past refugia south of the Great Caucasus, and a contact zone with European populations in the Crimean region. Further potential refugia might have been located at the foothills of the Pyrenees and in the Balkan region. Our genetic data suggest a phalanx-wise recolonization of Europe, a reflection of the high mobility of B. reticulatus.