Phylogeography of Pityogenes chalcographus
Abstract
An example for race formation in scolytids is Pityogenes chalcographus L. which infests Picea spp. throughout Europe. Studies have been carried out since the mid-70ies by the group of E. Führer and comprise crossing experiments and analysis of morphological parameters. Allopatric females were partly rejected by males in certain strain combinations and crossings of Scandinavian, Polish and Alpine strains resulted in different degrees of inter-population heterosis. Hybrids were mostly superior regarding their epidemiological potential over the parental strains and inter-popular hybrids showed polyploid sperms. It is suggested that postglacial evolution of P. chalcographus is the reason for the race formation. P. chalcographus was influenced by the postglacial history of its host, P. abies which had three refugial areas: Dinaric Alps, Carpatic Alps and the area north of Moscow ¿ Kostroma. It is likely that P. chalcographus had the same refugial areas and the same remigration routes. As the phylogeographic background of P. chalcographus is not yet understood this project has two goals: 1) large scale (Scandinavian x Alpine) and small scale (within the Central European populations) crossings shall be done with populations E. Führer used. The populations and their F1 will be tested using fertility parameters, morphological parameters and analysing the sperm polyploidy. This study shall reveal the distribution of the races in comparison to the findings of E. Führer. 2) microsatellite (diploid ¿ genotypes) and the mitochondrial COI, COII ND (maternal ¿ haplotype) markers will be applied to determine the phylogeographic distribution of the European populations. This shall bring insight 1. if the races can be correlated to specific haplo-/genotypes and 2. into the distribution of the haplo-/genotypes and their postglacial history. The data will be compared to findings in P. abies and also other scolytid species. The genetic data from the nuclear and the mtDNA will be used to estimate the genetic diversity of the populations and the gene flow among the populations. This will give insight into the genetic structure and migration behaviour of this spruce pest.
Phylogeography Scolytidae Microsatellites mitochondrial DNA Wolbachia
Publikationen
Pityogenes chalcographus
Autoren: Knizek M., Stauffer C., Avtzis D. & Wegensteiner R. Jahr: 2005
Originalbeitrag in Sammelwerk
Phylogeography of a host-specific insect: genetic structure of Ips typographus in Europe does not reflect past fragmentation of its host
Autoren: Salle, A; Arthofer, W; Lieutier, F; Stauffer, C; Kerdelhue, C Jahr: 2007
Originalbeitrag in Fachzeitschrift
Pityogenes chalcographus (Coleoptera, Scolytinae) at the southern borderline of Picea abies (in Greece)
Autoren: Avtzis D N; Arthofer W; Stauffer C; Avtzis N; Wegensteiner R Jahr: 2010
Originalbeitrag in Fachzeitschrift
Mitarbeiter*innen
Christian Stauffer
Ao.Univ.Prof. Dipl.-Ing. Dr.nat.techn. Christian Stauffer
christian.stauffer@boku.ac.at
Tel: +43 1 47654-91631
Project Leader
13.10.2003 - 31.10.2005
Stefan Veigel
Dipl.-Ing. Dr. Stefan Veigel
stefan.veigel@boku.ac.at
Tel: +43 1 47654-89124
Project Staff
13.10.2003 - 31.10.2005