Abstract
Abstract The central region of Argentina is occupied by a karyotypically stable group of Ctenomys species that form the mendocinus complex (C. australis, C. azarae, C. mendoci-nus, C. porteousi and C. chasiquensis), which contacts with populations of C. talarum, C. and intermediate karyomorphs between both species called the pundti complex. In this paper, eight populations of the region of reference from La Pampa province were chromosomally studied, to help resolve the systematic and evolutionary problems posed by these entities. In one population (El Guanaco) a 2n=48, FN=81–82 karyotype was found, which comprised 18 pairs of biarmed and 5 pairs of telocenctric autosomes. The NOR was carried by a small metacentric and the sperm was of the symmetric type. In the rest of the populations, 2n=47 and 2n=48 karyotypes were observed with FNs varying between 71–74. The 2n=48 karyotypes include 14 pairs of biarmed (A complement) and 9 pairs of telocentric (B complement) autosomes. One exceptional indivi...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
