A molecular phylogeny of the tamarins (genus Saguinus) based on five nuclear sequence data from regions containing Alu insertions
Article first published online: 24 AUG 2011
Copyright © 2011 Wiley-Liss, Inc.
American Journal of Physical Anthropology
Volume 146, Issue 3, pages 385–391, November 2011
How to Cite
da Cunha, D. B., Monteiro, E., Vallinoto, M., Sampaio, I., Ferrari, S. F. and Schneider, H. (2011), A molecular phylogeny of the tamarins (genus Saguinus) based on five nuclear sequence data from regions containing Alu insertions. Am. J. Phys. Anthropol., 146: 385–391. doi: 10.1002/ajpa.21587
- Issue published online: 13 OCT 2011
- Article first published online: 24 AUG 2011
- Manuscript Accepted: 15 JUN 2011
- Manuscript Received: 19 JAN 2011
- Brazilian National Research Council, CNPq. Grant Numbers: 302747/2008-7, 305645/2009-9, 306233/2009-6
- Amazonian primates;
- nuclear DNA
This study presents a molecular phylogeny of the Saguinus genus, based on the analysis of the DNA sequences of five nuclear loci with Alu insertions in 10 species. The concatenated alignment produced a polytomic arrangement with four main groups, although only two clades—the Amazonian (S. midas, S. niger, and S. bicolor) and the Colombian (S. leucopus and S. oedipus) tamarins—were statistically significant. The emergence of the midas-bicolor clade was estimated at about 5 million years ago (mya), and that of the Colombian clade, at 4.6 mya. The phylogenetic relationships among the mustached tamarins (S. mystax, S. imperator, and S. labiatus) remained unresolved, as did the internal arrangement of the midas group. The lack of a clear consensus on the phylogeny of this group may be related to rapid bursts of evolutionary change within the context of a highly dynamic environment, which may be difficult to resolve using the available quantitative approaches. On the other hand, the discrepancies between mtDNA and nDNA in resolving phylogenies strongly indicate the role of reticulated evolution in the evolutionary history of this group. We hope that the advance of whole genome sequencing technology and increasing information on nuclear markers and SNPs, coupled with a better understanding of the geological phenomena that took place in western Amazonia over the past 20 million years, will shed further light on the phylogenetic history of these New World primates. Am J Phys Anthropol, 2011. © 2011 Wiley-Liss, Inc.