Molecular biogeography of the fungus-dwelling saproxylic beetle Bolitophagus reticulatus indicates rapid expansion from glacial refugia

Eberle, Jonas; Husemann, Martin; Doerfler, Inken; Ulrich, Werner; Müller, Jörg; Bouget, Christophe; Brin, Antoine; Gossner, Martin M; Heilmann-Clausen, Jacob; Isacsson, Gunnar; Krištín, Anton; Lachat, Thibault; Larrieu, Laurent; Rigling, Andreas; Schmidl, Jürgen; Seibold, Sebastian; Vandekerkhove, Kris; Habel, Jan Christian (2021). Molecular biogeography of the fungus-dwelling saproxylic beetle Bolitophagus reticulatus indicates rapid expansion from glacial refugia Biological Journal of the Linnean Society, 133(3), pp. 766-778. Oxford University Press 10.1093/biolinnean/blab037

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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.

Item Type:	Journal Article (Original Article)
Division/Institute:	School of Agricultural, Forest and Food Sciences HAFL School of Agricultural, Forest and Food Sciences HAFL > Multifunctional Forest Management School of Agricultural, Forest and Food Sciences HAFL > Multifunctional Forest Management > Forest Ecosystem and Management
Name:	Eberle, Jonas; Husemann, Martin; Doerfler, Inken; Ulrich, Werner; Müller, Jörg; Bouget, Christophe; Brin, Antoine; Gossner, Martin M; Heilmann-Clausen, Jacob; Isacsson, Gunnar; Krištín, Anton; Lachat, Thibault0000-0003-3952-7443; Larrieu, Laurent; Rigling, Andreas; Schmidl, Jürgen; Seibold, Sebastian; Vandekerkhove, Kris and Habel, Jan Christian
Subjects:	S Agriculture > SD Forestry
ISSN:	0024-4066
Publisher:	Oxford University Press
Language:	English
Submitter:	Anke Schütze
Date Deposited:	13 Dec 2021 15:50
Last Modified:	13 Dec 2021 15:50
Publisher DOI:	10.1093/biolinnean/blab037
Uncontrolled Keywords:	biogeography, broadleaf forest, expansion, Fomes fomentarius, genetic analysis, mobility, phalanx-wise, refugia
ARBOR DOI:	10.24451/arbor.16053
URI:	https://arbor.bfh.ch/id/eprint/16053