Chromosomal versus mitochondrial DNA evolution: tracking the evolutionary history of the southwestern european populations of the Sorex araneus group (Mammalia Insectivora)


Autoria(s): Taberlet P.; Fumagalli L.; Hausser J.
Data(s)

1994

Resumo

The shrews of the Sorer araneus group have undergone a spectacular chromosome evolution. The karyotype of Sorer granarius is generally considered ancestral to those of Sorer coronatus and S. araneus. However, a sequence of 777 base pairs of the cytochrome b gene of the mitochondrial DNA (mtDNA) produces a quite different picture: S. granarius is closely related to the populations of S. araneus from the Pyrenees and from the northwestern Alps, whereas S. coronatus and S. araneus from Italy and the southern Alps represent two well-separated lineages. It is suggested that mtDNA and chromosomal evolution are in this case largely independant processes. Whereas mtDNA haplotypes are closely linked to the geographical history of the populations, chromosomal mutations were probably transmitted from one population to another. Available data suggest that the impressive chromosome polymorphism of this group is quite a recent phenomenon.

Identificador

http://serval.unil.ch/?id=serval:BIB_C36051B7A367

isbn:0014-3820

isiid:A1994PX52800009

Idioma(s)

en

Fonte

Evolution, vol. 48, no. 3, pp. 623-636

Palavras-Chave #CHROMOSOMAL EVOLUTION; CYTOCHROME B GENE; MITOCHONDRIAL DNA (MTDNA); PHYLOGENY; PHYLOGEOGRAPHY; ROBERTSONIAN FUSION; SOREX ARANEUS GROUP
Tipo

info:eu-repo/semantics/article

article