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Primates

, Volume 33, Issue 2, pp 239–245 | Cite as

Aotus vociferans ×Aotus nancymai: Sympatry without chromosomal hybridation

  • Julio Cesar Pieczarka
  • Regina Maria de Souza Barros
  • Cleusa Yoshiko Nagamachi
  • Raul Rodrigues
  • Alvaro Espinel
Article

Abstract

In a study relating geographic distribution ofAotus populations with karyotype and coat pattern,Hershkovitz (1983) suggested that this genus comprises nine species.A. vociferans (2n=46) is distributed along the left bank of the Maranon river, andA. nancymai (2n=54) along the right bank of the same river. In the present study we analyzed the karyotypes of 11A. vociferans and 11A. nancymai specimens using G- and C-banding and NOR-staining. Of these animals, fiveA. vociferans were sympatric with fiveA. nancymai in Isla Aramaza, Colombia; oneA. vociferans was sympatric with threeA. nancymai in Yahuma, Peru; oneA. vociferans was sympatric with threeA. nancymai in Terezinha I, Brazil. No signs of hybridation between the taxa was observed at any time, with allA. vociferans having 2n=46 and allA. nancymai 2n=54, as previously reported in the literature. These data suggest thatA. vociferans andA. nancymai should indeed be distinct species.

Key Words

Aotus Cytogenetic Sympatry Taxonomy Cebidae 

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Copyright information

© Japan Monkey Centre 1992

Authors and Affiliations

  • Julio Cesar Pieczarka
    • 1
  • Regina Maria de Souza Barros
    • 1
  • Cleusa Yoshiko Nagamachi
    • 1
  • Raul Rodrigues
    • 2
  • Alvaro Espinel
    • 2
  1. 1.Departamento de Genética, Centro de Ciências BiológicasUniversidade Federal do ParáBelém, ParáBrasil
  2. 2.Universidad Nacional de ColômbiaBogotáColômbia

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