%0 Journal Article
%T Chromosome polymorphism in Ctenomys minutus (Rodentia-Octodontidae)
%J Brazilian Journal of Genetics
%D 1997
%I Scientific Electronic Library Online
%R 10.1590/S0100-84551997000100001
%X a sample of 101 specimens of ctenomys minutus was collected along its geographic range. eight karyotypes (2n = 42, 45, 46a, 46b, 47, 48, 49 and 50) were found. the chromosome polymorphisms were due to robertsonian rearrangements and tandem fusions. the distribution of polymorphisms indicated three population blocks: northern (2n = 49 and 50), central (2n = 46a, 47, and 48) and southern (2n = 42, 45, and 46b). these findings suggest that this species is undergoing a speciation process due to geographic isolation.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-84551997000100001&lng=en&nrm=iso&tlng=en