Τίτλος:
Mitochondrial phylogeography of the land snail Albinaria in Crete:
Long-term geological and short-term vicariance effects
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The land snail genus Albinaria exhibits an extreme degree of
morphological differentiation in Greece, especially in the island of
Crete. Twenty-six representatives of 17 nominal species and a suspected
hybrid were examined by sequence analysis of a PCR-amplified
mitochondrial DNA fragment of the large rRNA subunit gene. Maximum
parsimony and neighbor-joining phylogenetic analyses demonstrate a
complex pattern of speciation and differentiation and suggest that
Albinaria species from Crete belong to at least three distinct
monophyletic groups, which, however, are not monophyletic with reference
to the genus as a whole. There is considerable variation of genetic
distance within and among “species” and groups. The revealed
phylogenetic relations do not correlate well with current taxonomy, but
exhibit biogeographical coherence. Certain small- and large-scale
vicariance events can be traced, although dispersal and parapatric
speciation may also be present. Our analysis suggests that there was an
early and rapid differentiation of Albinaria groups across the whole of
the range followed by local speciation events within confined
geographical areas.
Συγγραφείς:
Douris, V
Cameron, RAD
Rodakis, GC
Lecanidou, R
Περιοδικό:
Ethology Ecology and Evolution
Λέξεις-κλειδιά:
Albinaria; Crete; land snails; mitochondrial ribosomal RNA; molecular
systematics; paleogeography; phylogeography
