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Distribution extension of Ateles chamek (Humboldt 1812) in the southwestern Brazilian Amazon: identification by visual evidence and fecal DNA

  • André Valle Nunes , Ricardo Koroiva , Gabrielle Nóbrega Gomes Vanessa EMAIL logo and Vinícius Santana Orsini
From the journal Mammalia


One group of Ateles chamek (Humboldt 1812) was observed during 12 days in the Vila Bela da Santíssima Trindade municipality, in the state of Mato Grosso. During that time fecal samples (n=10) were collected and molecular sequencing was used to confirm species identification. The results suggest that the particular pattern of facial hair color observed in this group may be used for differentiation from other sub-populations; however, a deeper study is required for confirmation of these results. This record represents the most southwestern observation of this species, and increases the geographic distribution of A. chamek for about 16 km into the southern Brazilian Amazon. Taking into consideration the threatened status of this species of monkey, and that this region is under constant intensive deforestation, it is important to highlight that ecological studies and conservation activities require urgent development.


The authors thank Biocev Smart Projects Group and Interligação Elétrica do Madeira S.A. for the logistical support. A fellowship to AVN, RK and VGNG was provided by CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior). The authors thank Liliana Cortes-Ortiz for reviewing analyses, Raúl Bello Santa Cruz, Frederico Pereira and Alexander Zaidan de Souza for the photos in Manu National Park, Jamari River and Vila Bela da Santíssima Trindade, respectively, Mariana Santana Orsini for English revision and Prof. Dr. Diego Santana (UFMS) for use of molecular facilities.


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Supplemental Material:

The online version of this article (DOI: offers supplementary material.

Received: 2016-12-12
Accepted: 2017-3-1
Published Online: 2017-4-6
Published in Print: 2018-2-23

©2018 Walter de Gruyter GmbH, Berlin/Boston

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