Results 71 to 80 of about 27,076 (199)

Phylogeography, taxonomy, and conservation of the endangered brown howler monkey, Alouatta guariba (Primates, Atelidae), of the Atlantic Forest

open access: yesFrontiers in Genetics
The brown howler, Alouatta guariba, endemic to the Atlantic Forest of Brazil and Argentina, is threatened by habitat loss and fragmentation, hunting, and its susceptibility to yellow fever.
Luciana I. Oklander   +26 more
doaj   +1 more source

A phylogenomic perspective on the robust capuchin monkey (Sapajus) radiation : first evidence for extensive population admixture across South America [PDF]

open access: yes, 2018
Phylogenetic relationships amongst the robust capuchin monkeys (genus Sapajus) are poorly understood. Morphology-based taxonomies have recognized anywhere from one to twelve different species.
Aleixo, A   +11 more
core   +1 more source

Caracterización citogenética de una pareja de Aotus (Cebidae: Platyrrhini): Estudio preliminar

open access: yesActa Biológica Colombiana, 2001
Aotuses el único primate nocturno del neotrópico, este género se distribuye desde Panamáhasta Argentina, teniendo una alta radiación en la región Amazónica, especialmente en Perúy Ecuador.
J. Hernández   +4 more
doaj  

Medium/Long wavelength sensitive opsin diversity in Pitheciidae [PDF]

open access: yes, 2017
New World primates feature a complex colour vision system. Most species have polymorphic colour vision where males have a dichromatic colour perception and females can be either ichromatic or trichromatic.
A Beja-Pereira   +49 more
core   +1 more source

Ejakulatgewinnung und Ejakulatanalyse bei Krallenaffen (Callitrichidae; Platyrrhini; Primates)

open access: yes, 2005
Die Verfügbarkeit ausreichender Mengen von Spermatozoen guter Qualität ist ein Faktor, der die reproduktionsbiologische Forschung sowie die Entwicklung assistierender Reproduktionstechniken bei Primaten stark einschränkt. Als Routinemethode bei Primaten gilt die Elektroejakulation unter Verwendung von Rektalsonden (rectal probe electroejaculation, RPE).
Schneiders, Alexander   +1 more
openaire   +3 more sources

Densidade e tamanho de grupos de Callicebus cf pallescens (Primates: Pitheciidae) na Fazenda Santa Teresa, Pantanal. [PDF]

open access: yes, 2011
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 ...
CAMILO, A. R.   +4 more
core  

Phylogeny, molecular dating and zoogeographic history of the titi monkeys (Callicebus, Pitheciidae) of eastern Brazil [PDF]

open access: yes, 2018
The titi monkeys belong to a genus of New World primates endemic to South America, which were recently reclassified in three genera (Cheracebus, Plecturocebus and Callicebus).
Boubli, JP   +10 more
core   +2 more sources

Distribution patterns of Neotropical primates (Platyrrhini) based on Parsimony Analysis of Endemicity

open access: yesBrazilian Journal of Biology
The Parsimony Analysis of Endemicity (PAE) is a method of historical biogeography that is used for detecting and connecting areas of endemism. Based on data on the distribution of Neotropical primates, we constructed matrices using quadrats, interfluvial
A. Goldani   +2 more
doaj   +1 more source

Divergent evolution and purifying selection of the H (FUT1) gene in New World monkeys (Primates, Platyrrhini)

open access: yesGenetics and Molecular Biology, 2004
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 ...
Bárbara do Nascimento Borges   +1 more
doaj   +1 more source

Distribution, diversity and evolution of endogenous retroviruses in perissodactyl genomes [PDF]

open access: yes, 2018
The evolution of mammalian genomes has been shaped by interactions with endogenous retroviruses (ERVs). In this study, we investigated the distribution and diversity of ERVs in the mammalian order Perissodactyla, with a view to understanding their impact
Gifford, Robert   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy