Results 11 to 20 of about 10,273 (210)

Variation in the extraction efficiency of estradiol and progesterone in moist and lyiphilized feces of the black howler monkey (Alouatta pigra): alternative methods [PDF]

Frontiers in Physiology, 2011
several fecal steroid extraction techniques have been developed to measure the ovary function in different species of mammals. However, regardless of the method of extraction and the sample type chosen, is has been observed that they can yield results ...
Vianey Del Rocio Torres
doaj   +2 more sources

Anatomical Description of the Main Gyri and Sulci of the Telencephalon of Alouatta belzebul. [PDF]

Anat Histol Embryol
ABSTRACT The Alouatta belzebul is a species of howler monkey, of the Atelidae family and genus Alouatta. It is endemic in Brazil and has a separate geographic distribution, with two populations occurring: in the Amazon and in the Atlantic Forest on the coast of Northeast Brazil. The species is classified as ‘vulnerable’, and this is mainly justified by
Pereira DKS, de Melo FR, de Melo FCSA, Pereira KF, Vulcani VAS.   +4 more
europepmc   +2 more sources

Male Reproductive Strategies in Black and Gold Howler Monkeys (Alouatta caraya) [PDF]

, 2013
Behavioral and demographic factors such as group size, social structure, dispersal patterns, and mating systems affect male reproductive success. In the present study, we analyze the relationship between social structure, genetic relatedness of adult ...
Corach, Daniel, Kowalewski, Miguel Martin, Oklander, Luciana Inés   +2 more
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Pinworms of the red howler monkey (Alouatta seniculus) in Colombia. Gathering the pieces of the pinworm-primate puzzle [PDF]

, 2020
Pinworms of primates are believed to be highly host specific parasites, forming co-evolutionary associations with their hosts. In order to assess the strength and reach of such evolutionary links, we need to have a broad understanding of the pinworm ...
Ospina, A. L., Perez-Ponce de Leon, G., Rondon, S., Solorzano-Garcia, B.   +3 more
core   +1 more source

Morphological study of the pineal gland of Alouatta belzebul

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2022
The pineal is a neuroendocrine gland responsible for the synthesis and release of melatonin. It is present in the brain of vertebrates, but its morphology and location vary considerably among species.
L.J.S. Mascarenhas, D.K.S. Pereira, K.F. Pereira, L.G. Pagliarin, V.S. Franzo, V.A.S. Vulcani   +5 more
doaj   +1 more source

Phylogenetic inferences of Atelinae (Platyrrhini) based on multi-directional chromosome painting in Brachyteles arachnoides, Ateles paniscus paniscus and Ateles b. marginatus [PDF]

, 2005
We performed multi-directional chromosome painting in a comparative cytogenetic study of the three Atelinae species Brachyteles arachnoides, Ateles paniscus paniscus and Ateles belzebuth marginatus, in order to reconstruct phylogenetic relationships ...
C. Nagamachi, Collins AC, Consigliere S, Dutrillaux B, Dutrillaux B, E.H.C. de Oliveira, Garcia F, Garcia F, I.J. Sbalqueiro, J.C. Pieczarka, Kay RF, Kellogg R, Kunkel LM, M. Neusser, Muller S, Pequignot E, Pieczarka JC, S. Müller   +17 more
core   +1 more source

Presença do Plasmodium brasilianum em macacos capturados na área de enchimento do reservatório da usina hidrelétrica de Tucuruí, Pará Presence of Plasmodium brasilianum in monkeys captured in the area of the flood of the dam of Tucuruí power plant, Pará

Memorias do Instituto Oswaldo Cruz, 1985
Examinando-se o sangue de 2.046 primatas capturados durante a "Operação Curupira" encontraram-se plasmódios semelhantes ao Plasmodium brasilianum em sete espécies ou subespécies: Alouatta belzebul belzebul, Alouatta belzebul nigerrima, Alouatta seniculus,
Mércia Eliane de Arruda
doaj   +1 more source

A family case of fertile human 45,X,psu dic(15;Y) males [PDF]

, 2006
We report on a familial case including four male probands from three generations with a 45,X,psu dic(15;Y)(p11.2;q12) karyotype. 45,X is usually associated with a female phenotype and only rarely with maleness, due to translocation of small Y chromosomal
Andersson M, Baumstark A, Buonadonna AL, C.S. Nagarajappa, Callen DF, Charchar FJ, Fracarro M, Freije D, Gal A, Haaf T, Hsu TC, I. Hansmann, I. Palaniappan, Koiffmann CP, Ma NS, Maserati E, Matthey R, N. Chandra, P.M. Gopinath, R. Wimmer, Ried T, Schempp W, Schiebel K, Schmid M, Siffroi JP, Subrt I, Tiemeier DC, W. Schempp, Weber B, White LM   +29 more
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Phylogenetic relationships among Brazilian howler monkeys, genus Alouatta (Platyrrhini, Atelidae), based on g1-globin pseudogene sequences

Genetics and Molecular Biology, 1999
The genus Alouatta (howler monkeys) is the most widely distributed of New World primates, and has been arranged in three species groups: the Central American Alouatta palliata group and the South American Alouatta seniculus and Alouatta caraya groups ...
Carla Maria Meireles, John Czelusniak, Stephen F. Ferrari, Maria Paula Cruz Schneider, Morris Goodman   +4 more
doaj   +1 more source

Rensch’s and Bergmann’s Rules in Cis-Andean South-American Howler Monkeys (Mammalia: Alouatta) [PDF]

, 2018
Howler monkeys (genus Alouatta) are large folivorous primates living in South America. We tested for the application of both Rensch’s rule and Bergmann’s rule to body size variation in Alouatta. We found that Rensch’s rule does apply in howlers.
Bubadué, J, Carotenuto, F, Castiglione, S, Cáceres, N, Melchionna, M, Melo, G, Meloro, C, Mondanaro, A, Polidoro, G, Raia, P, Serio, C, Sponchiado, J   +11 more
core   +1 more source