Genetic similarity between species of Akodon (Rodentia, Cricetidae).

Genetic similarity between species of rodents of the Akodon genus (A. dolores, A. molinae, and A. azarae) has been estimated by analysis of electrophoretic zymograms corresponding to 23 loci. Nei's coefficient between A. dolores and A. molinae was within the range usually found in conspecific populations. This evidence plus the successful production of "hybrids" (Merani et al., J. Exp. Zool., 206:343-346, '78) suggests that A. dolores and A. molinae may represent geographic races of the same species.