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Tomicus are among the most dangerous pine pests. In this paper we assess the genetic structure of some Italian Tomicus populations, and the possible sympatry of T. destruens and T. piniperda. A fragment 358 bp long of the mitochondrial DNA relative to the COI was investigated in eight populations by SSCP analyses and sequencing. In the sampled populations T. destruens and T. piniperda were not found to be sympatric. T. destruens populations of southern and central Italy strongly differ from a population of northern Italy. The phylogeographic analysis of T. destruens populations in Europe is geographically structured, probably due to the fragmentation of the host pine ranges. The populations of T. piniperda are polymorphic, with haplotypes occurring also in Europe and Asia. T. piniperda populations seem to be genetically unstructured because of both the continuous distribution area of its main host (Pinus sylvestris) and the international trade of pine timber. mtDNA / SSCP / Scolytidae / pine / phylogeography

annals of forest science

Genetic structure and phylogeography of pine shoot beetle populations (<i>Tomicus destruens</i> and <i>T. piniperda</i>, Coleoptera Scolytidae) in Italy

Genetic structure and phylogeography of pine shoot beetle populations (Tomicus destruens and T. piniperda, Coleoptera Scolytidae) in Italy