Italian Peninsula preserves an evolutionary lineage of the fat dormouse Glis glis L. (Rodentia: Gliridae)

作者：Lo Brutto Sabrina^*; Sara Maurizio; Arculeo Marco

来源：Biological Journal of the Linnean Society, 2011, 102(1): 11-21.

DOI：10.1111/j.1095-8312.2010.01573.x

• Italy
• mtDNA
• phylogeography
• rodents

The present study examines the population genetic structure of fifty-nine specimens of Glis glis (Linneaus, 1766) from thirteen localities in central Europe, sequencing a 400-bp segment of the mitochondrial cytochrome b (cyt b) gene and a 673-bp segment of the cytochrome c oxidase subunit I (COI) gene. The consensus tree obtained from Bayesian analysis revealed a robust dichotomy, showing two sister groups: one clade includes samples from a wide geographical area, extending from north-central Europe to northern Italy (major branch sensu Bilton), and the other comprises samples collected in central and southern Italy and in Sicily (Italian branch). According to the Tajima-Nei model, the two phylogroups were separated by a sequence divergence of 0.8% (cyt b) - 2.6% (COI), showing the COI gene to be more informative than cyt b. On a smaller geographical scale, the Italian clade was further substructured, displaying geographical differentiation along the Peninsula. The gene pool in this area was patchy; whereas populations from Sicily Island demonstrated fixed cyt b and COI haplotypes, assuming processes of isolation and selection.

• 出版日期2011-1