Abstract
We described the karyotypes detected in 23Aotus specimens captured on Southwestern Amazon region (63°30'W, 9°00'S). This region should be occupied byA. nigriceps. However, the animals described here have a fur pattern and a karyotypes similar to those ofA. azarae boliviensis andA. infulatus. The females presented 50 chromosomes and the males 49 as a consequence of fusion between the chromosome Y and an autosome. This sample presented polymorphisms of G- and C-banding and NOR-staining. These animals are karyotypically intermediate betweenA. a. boliviensis andA. infulatus. The taxonomy and karyotypic evolution of these taxa are discussed.
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Pieczarka, J.C., de Souza Barros, R.M., de Faria, F.M. et al. Aotus from the southwestern Amazon region is geographically and chromosomally intermediate betweenA. azarae boliviensis andA. infulatus . Primates 34, 197–204 (1993). https://doi.org/10.1007/BF02381390
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DOI: https://doi.org/10.1007/BF02381390