Aotus vociferans ×Aotus nancymai: Sympatry without chromosomal hybridation |
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Authors: | Julio Cesar Pieczarka Regina Maria de Souza Barros Cleusa Yoshiko Nagamachi Raul Rodrigues Alvaro Espinel |
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Institution: | 1. Departamento de Genética, Centro de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brasil 2. Universidad Nacional de Col?mbia, Bogotá, Col?mbia
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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. |
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Keywords: | Aotus Cytogenetic Sympatry Taxonomy Cebidae |
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