Topic
Aotus brumbacki
About: Aotus brumbacki is a(n) research topic. Over the lifetime, 3 publication(s) have been published within this topic receiving 272 citation(s).
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TL;DR: The nine allopatric species of Aotus recognized represent two natural groups distinguished by karyotype, color, and pelage patterns, and a key to the species and subspecies gives the diagnostic characters of each.
Abstract: The nine allopatric species of Aotus recognized represent two natural groups distinguished by karyotype, color, and pelage patterns. Correlated with these group characters are reported differences in serum proteins and degrees of susceptibility or immunity to experimental infection with malarial parasites. The primitive gray-neck species group of Aotus contains A. brumbacki (new species), A. lemurinus (with subspecies lemurinus and griseimembra), A. trivirgatus, and A. vociferans. The derived red-neck group contains A. nancymai (new species), A. miconax. A. infulatus, and A. azarae (with subspecies azarae and boliviensis). Only the two new species are described but a key to the species and subspecies gives the diagnostic characters of each. The gray-neck group occurs almost entirely north of the Amazon, the red-neck group almost entirely south. The distributional exceptions are enclave populations resulting from river bend cutoffs. Formation of an enclave population of A. nancymai is discussed and available information on the biology of this species is reported.
252 citations
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TL;DR: Seasonality of the activity pattern of Callithrix penicillata (Primates, Callitrichidae) in the cerrado (scrub savanna vegetation).
Abstract: ogy, A.B. Rylands (ed.), pp. 263–271. Oxford University Press, Oxford. Sick, H. 1997. Famílias e espécies: ordem Columbiformes. In: Ornitologia Brasileira, J. F. Pacheco (ed.), pp. 341– 350. Nova Fronteira, Rio de Janeiro. Stevenson, M. F. and Rylands, A.B. 1988. The marmosets, genus Callithrix. In: Ecology and behavior of Neotropical primates, Mittermeier, R.A., Rylands, A.B., Coimbra-Filho, A. and Fonseca, G.A.B. (eds.), pp.131–222. WWF, Washington. Vilela, S. L. and Faria, D. S. 2004. Seasonality of the activity pattern of Callithrix penicillata (Primates, Callitrichidae) in the cerrado (scrub savanna vegetation). Braz. J. Biol. 64: 363–370.
18 citations
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TL;DR: This work used precise chromosome G-band measurements and digital arm-ratio analyses to provide convincing evidence that the night monkey from Maipures, Vichada, Colombia, is in fact a hybrid of Aotus brumbacki.
Abstract: The paper ‘Aotus diversity and the species problem’ (Defler and Bueno 2007, Primate Conserv. 22: 55–77) reviewed the distribution of the Aotus karyotypes in Panama and Colombia. It included a discussion of a night monkey from Maipures, Vichada, Colombia, that we captured live and karyotyped for a project at the Universidad de Los Andes, Bogota, Colombia, in 1983. In 1984, in an unpublished manuscript, we hypothesized that this specimen was a natural hybrid of Aotus brumbacki. Our identification was based on the karyotype G-band patterns, capture location, fur color, and a skin and skull preserved at the Instituto de Desarrollo de Los Recursos Naturales y Renovables (INDERENA), Bogota, now at the Instituto de Alejandro von Humboldt. Defler and Bueno (2007) had interpreted the karyotype by assuming that all 50 chromosomes were paired. However, the authors had used data from an indistinct photograph of a karyotype without G-bands. This prompted us to review our original data using contemporary digi...
2 citations