Results 61 to 70 of about 24,741 (157)

Expression of common fragile sites in two Ceboidea species: Saimiri boliviensis and Alouatta caraya (Primates: Platyrrhini)

Genetics Selection Evolution, 2000
Fragile sites are points of preferential breakage that may be involved in chromosome rearrangements. Induction of common fragile sites (c-fra) and spontaneous breakage were analyzed in two New World Monkeys species: Saimiri boliviensis (SBO) and Alouatta
Mudry Marta, Gorostiaga María, Fundia Ariela   +2 more
doaj   +1 more source

Convergencia en las proporciones craneanas entre primates del nuevo y el viejo mundo: un análisis craneofuncional

Revista Argentina de Antropología Biológica, 2014
Los humanos modernos han sido caracterizados por una morfología craneana extremadamente lobulada, considerada como una respuesta al aumento significativo en el tamaño del cerebro, que los diferencia de manera marcada del resto de los Primates.
Rocatti, Guido, Pucciarelli, Héctor Mario, Muñe, María Cristina, Pérez, Sergio Iván   +3 more
doaj  

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

Acta 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, C. Salgado, N. Romero, H. Monsalve, J. Bernal   +4 more
doaj  

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

Frontiers 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, Luciana I. Oklander, Luciana I. Oklander, Gabriela P. Fernández, Stela Machado, Mariela Caputo, Zelinda M. B. Hirano, Zelinda M. B. Hirano, Anthony B. Rylands, Anthony B. Rylands, Leonardo G. Neves, Sérgio L. Mendes, Sérgio L. Mendes, Luciana G. Pacca, Fabiano R. de Melo, Fabiano R. de Melo, Italo Mourthé, Italo Mourthé, Thales R. O. Freitas, Thales R. O. Freitas, Daniel Corach, Leandro Jerusalinsky, Leandro Jerusalinsky, Leandro Jerusalinsky, Leandro Jerusalinsky, Sandro L. Bonatto, Sandro L. Bonatto   +26 more
doaj   +1 more source

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

, 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, Justus Liebig University Giessen   +1 more
openaire   +3 more sources

Molecular phylogeny of the genus Saguinus (Platyrrhini, Primates) based on the ND1 mitochondrial gene and implications for conservation

Genetics and Molecular Biology, 2005
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 ...
Claudia Helena Tagliaro, Horacio Schneider, Iracilda Sampaio, Maria Paula Cruz Schneider, Marcelo Vallinoto, Michael Stanhope   +5 more
doaj   +1 more source

Molecular cladistic markers in New World monkey phylogeny (Platyrrhini, Primates)

Molecular Phylogenetics and Evolution, 2003
Transpositions of primate-specific Alu elements were applied as molecular cladistic markers in a phylogenetic analysis of South American primates. Seventy-four human and platyrrhine loci containing intronic Alu elements were PCR screened in various New World monkeys and the human outgroup to detect the presence of orthologous retrotransposons ...
Singer, Silke S, Schmitz, Jürgen, Schwiegk, Claudia, Zischler, Hans   +3 more
openaire   +3 more sources

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

Brazilian 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, G. S. Carvalho, J. C. Bicca-Marques   +2 more
doaj   +1 more source

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

Genetics 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, Maria Lúcia Harada   +1 more
doaj   +1 more source

Present state of evolution and systematics of Platyrrhiny.

Anthropological Science, 1995
南米大陸の熱帯雨林に生息する広鼻猿類の系統進化に関する研究は, ここ十数年の相次ぐ化石種の発見と分子生物学的手法の発展により飛躍的に進展している。現在の主な論点は, マーモセット類•サキ類•クモザル類 (ホエザルを含む) の大きな3つのグループと, 残りの4属 (リスザル•ヨザル•ティティモンキー•オマキザル)との系統的な関係である。特に後4者の系統的な位置に関しては, 古生物学的な解析,現生種の形態学的解析, 分子生物学的解析のいずれも決定的な結論を出すに至っていない. 広鼻猿類の進化の初期段階で, 非常に短い時間に急速に互いに分岐したのではないかと思われる。
openaire   +2 more sources