Ancient DNA of the pygmy marmoset type specimen Cebuella pygmaea (Spix, 1823) resolves a taxonomic conundrum

Boubli, JP ORCID:, Janiak, MC ORCID:, Porter, LM, de la Torre, S, Cortés-Ortiz, L, da Silva, MNF, Rylands, AB, Nash, S, Bertuol, F, Byrne, H, E. Silva, F, Rohe, F, de Vries, D, Beck, RMD ORCID:, Ruiz-Gartzia, I, Kuderna, LFK, Marques-Bonet, T, Hrbek, T, Farias, IP, van Heteren, AH and Roos, C 2021, 'Ancient DNA of the pygmy marmoset type specimen Cebuella pygmaea (Spix, 1823) resolves a taxonomic conundrum' , Zoological Research, 42 (6) , pp. 761-771.

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The pygmy marmoset, the smallest of the anthropoid primates, has a broad distribution in Western Amazonia. Recent studies using molecular and morphological data have identified two distinct species separated by the Napo and Solimões-Amazonas rivers. However, reconciling this new biological evidence with current taxonomy, i.e., two subspecies, Cebuella pygmaea pygmaea (Spix, 1823) and Cebuella pygmaea niveiventris (Lönnberg, 1940), was problematic given the uncertainty as to whether Spix’s pygmy marmoset (Cebuella pygmaea pygmaea) was collected north or south of the Napo and Solimões-Amazonas rivers, making it unclear to which of the two newly revealed species the name pygmaea would apply. Here, we present the first molecular data from Spix’s type specimen of Cebuella pygmaea, as well as novel mitochondrial genomes from modern pygmy marmosets sampled near the type locality (Tabatinga) on both sides of the river. With these data, we can confirm the correct names of the two species identified, i.e., C. pygmaea for animals north of the Napo and Solimões-Amazonas rivers and C. niveiventris for animals south of these two rivers. Phylogenetic analyses of the novel genetic data placed into the context of cytochrome b gene sequences from across the range of pygmy marmosets further led us to re-evaluate the geographical distribution for the two Cebuella species. We dated the split of these two species to 2.54 million years ago. We discuss additional, more recent, subdivisions within each lineage, as well as potential contact zones between the two species in the headwaters of these rivers.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences > Ecosystems and Environment Research Centre
Journal or Publication Title: Zoological Research
Publisher: Science Press, PR China
ISSN: 2095-8137
Related URLs:
Funders: Natural Environment Research Council (NERC), National Council for Scientific and Technological Development (CNPq), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), National Science Foundation, USA (NSF), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Depositing User: Prof JP Boubli
Date Deposited: 25 Oct 2021 10:16
Last Modified: 25 Oct 2021 10:16

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