Platyrrhini Primates
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. The complete mitochondrial genome sequence of the black-capped capuchin (Cebus apella)
The phylogenetic relationships of primates have been extensively investigated, but key issues remain unresolved. Complete mitochondrial genome (mitogenome) data have many advantages in phylogenetic analyses, but such data are available for only 46 primate species. In this work, we determined the complete mitogenome sequence of the black-capped capuchin (Cebu
Genetics and Molecular Biology. Publicado em: 24/05/2012
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2. Comparison of two computerized procedures for the assessment of color discrimination in Cebus apella
Color vision consists of the discrimination of objects based on their spectral composition. Among primates, the majority of Platyrrhini monkeys are estimated to have polymorphic and sex-linked dichromacy. The objective of this study was to compare the results produced by different equipment and software for the assessment of tri- and dichromatic conditions i
Psychology & Neuroscience. Publicado em: 2011-12
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3. Densidade e tamanho de grupos de Callicebus cf pallescens (Primates: Pitheciidae) na Fazenda Santa Teresa, Pantanal.
Os primatas da infraordem Platyrrhini são divididos em quatro famílias, dentre elas a Pitheciidae. Um gênero bastante representativo nesta família é Callicebus, com 29 espécies reconhecidas, sendo que 22 ocorrem no Brasil e apenas uma destas, Callicebus pallescens, ocorre na região do Pantanal. Esta espécie, conhecida popularmente na região como boc
SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL. Publicado em: 2011
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4. Responses of wild titi monkeys, Callicebus coimbrai (Primates: Platyrrhini: Pitheciidae), to the habituation process
Adequate habituation of free-ranging subjects is essential for any field study, but is generally unsystematic. Here, attempts to habituate three titi monkey (Callicebus coimbrai Kobayashi & Langguth, 1999) groups are described, and factors determining the effectiveness of the process are discussed. The "relentless pursuit" approach was aided by playback reco
Zoologia (Curitiba). Publicado em: 2010
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5. Synteny of human chromosomes 14 and 15 in the platyrrhines (Primates, Platyrrhini)
In order to study the intra- and interspecific variability of the 14/15 association in Platyrrhini, we analyzed 15 species from 13 genera, including species that had not been described yet. The DNA libraries of human chromosomes 14 and 15 were hybridized to metaphases of Alouatta guariba clamitans, A. caraya, A. sara, Ateles paniscus chamek, Lagothrix lagoth
Genetics and Molecular Biology. Publicado em: 28/08/2009
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6. Chromosome evolution: Karyotype variability in Platyrrhini and studies of sinteny and homologies between human chromosomes / Evolução cromossômica: estudo da variabilidade cariotípica em Platyrrhini e das homeologias e sintenias com cromossomos humanos
We studied the karyotypes of Brazilian monkeys (Platyrrhini, Primates) using both traditional cytogenetic techniques as well as FISH. FISH analysis employed human probes for chromosome 14, 15 and the X chromosome and a probe of the Y chromosome of Brachyteles arachnoides obtained by chromosome microdissection. Twenty-four individuals of Alouatta guariba clam
Publicado em: 2008
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7. Análise biogeográfica da distribuição de primatas neotropicais (primates, platyrrhini)
A Análise de Traços (Pan-biogeografia) enfoca a dimensão espacial ou geográfica da biodiversidade, permitindo-nos uma melhor compreensão dos padrões e processos evolutivos. Ela compara traços individuais de diferentes táxons para detectar traços generalizados ou componentes bióticos. Este estudo objetivou analisar a distribuição de 24 espécies d
Publicado em: 2006
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8. Molecular phylogeny of the genus Saguinus (Platyrrhini, Primates) based on the ND1 mitochondrial gene and implications for conservation
The systematics of the subfamily Callitrichinae (Platyrrhini, Primates), a group of small monkeys from South America and Panama, remains an area of considerable discussion despite many investigations, there being continuing controversy over subgeneric taxonomic classifications based on morphological characters. The purpose of our research was to help elucida
Genetics and Molecular Biology. Publicado em: 2005-03
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9. Divergent evolution and purifying selection of the H (FUT1) gene in New World monkeys (Primates, Platyrrhini)
In the present study, the coding region of the H gene was sequenced and analyzed in fourteen genera of New World primates (Alouatta, Aotus, Ateles, Brachyteles, Cacajao, Callicebus, Callithrix, Cebus, Chiropotes, Lagothrix, Leontopithecus, Pithecia, Saguinus, and Saimiri), in order to investigate the evolution of the gene. The analyses revealed that this cod
Genetics and Molecular Biology. Publicado em: 2004
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10. The prion protein and New World primate phylogeny
The PrP C prion protein contains 250 amino acids with some variation among species and is expressed in several cell types. PrP C is converted to PrP Sc by a post-translational process in which it acquires amino acid sequences of three-dimensional conformation of beta-sheets. Variations in the prion protein gene were observed among 16 genera of New World prim
Genetics and Molecular Biology. Publicado em: 2004
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11. Molecular studies of Callithrix pygmaea (Primates, Platyrrhini) based on transferrin intronic and ND1 regions: implications for taxonomy and conservation
As classificações tradicionais envolvendo os macacos da infraordem Platyrrhini, principalmente baseadas em características morfológicas, têm sido contestadas por dados moleculares recentes. A subfamília Callitrichinae (Platyrrhine, Primates) engloba um diverso grupo de espécies, muitas das quais consideradas em perigo de extinção. A presente anális
Genetics and Molecular Biology. Publicado em: 2000-12
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12. Primates. Part 3—Platyrrhini (Families Hapalidae and Callimiconidae)