Consulta: subjectFacets:"Squirrel monkeys"
Registros recuperados: 3
Data/hora: 09/06/2024 15:59:42

Molecular data highlight hybridization in squirrel monkeys (Saimiri, Cebidae)
Provedor de dados: 74
Autores: Carneiro,Jeferson; Rodrigues-Filho,Luis Fernando da Silva; Schneider,Horacio; Sampaio,Iracilda.
Abstract Hybridization has been reported increasingly frequently in recent years, fueling the debate on its role in the evolutionary history of species. Some studies have shown that hybridization is very common in captive New World primates, and hybrid offspring have phenotypes and physiological responses distinct from those of the "pure" parents, due to gene introgression. Here we used the TA15 Alu insertion to investigate hybridization in the genus Saimiri. Our results indicate the hybridization of Saimiri boliviensis peruviensis with S. sciureus macrodon, and S. b. boliviensis with S. ustus. Unexpectedly, some hybrids of both S. boliviensis peruviensis and S. b. boliviensis were homozygous for the absence of the insertion, which indicates that the...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Saimiri; Squirrel monkeys; Alu elements; Hybridization.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000400539

Morphometric and ultrastructural analysis of different pituitary cell populations in undernourished monkeys
Provedor de dados: 56
Autores: Cónsole,G.M.; Jurado,S.B.; Oyhenart,E.; Ferese,C.; Pucciarelli,H.; Gómez Dumm,C.L.A.
Undernutrition elicited by a low-protein diet determines a marked reduction of hypophyseal activity and affects the function of the respective target organs. The objective of the present investigation was to study the ultrastructural and quantitative immunohistochemical changes of the different pituitary cell populations in undernourished monkeys that had been previously shown to have significant changes in craniofacial growth. Twenty Saimiri sciureus boliviensis monkeys of both sexes were used. The animals were born in captivity and were separated into two groups at one year of age, i.e., control and undernourished animals. The monkeys were fed ad libitum a 20% (control group) and a 10% (experimental group) protein diet for two years. Pituitaries were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pituitary gland; Quantitative immunohistochemistry; Ultrastructure; Undernutrition; Squirrel monkeys.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100008

Toxoplasmosis in squirrel monkeys: histological and immunohistochemical analysis
Provedor de dados: 65
Autores: Andrade,Márcia Cristina Ribeiro; Coelho,Janice Mery Chicarino de Oliveira; Amendoeira,Maria Regina Reis; Vicente,Regiane Trigueiro; Cardoso,Célia Virgínia Pereira; Ferreira,Paola Cristina Brandão; Marchevsky,Renato Sergio.
Necropsy findings in three cases of naturally occurring toxoplasmosis in squirrel monkeys (Saimiri sciureus) obtained as wild catches from the Amazon region were described. Histopathological evaluation of the liver, spleen, kidneys and mesenteric lymph nodes showed multiple foci of inflammation and necrosis. Typical, well-defined morphologic Toxoplasma gondii cysts and free forms of the parasite were found by immunoperoxidase staining within inflammatory infiltrates. The presence of T. gondii in the studied colony could severely influence the results of experiments performed in the animals.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Squirrel monkeys; Neotropical primates; Toxoplasmosis; Immunohistochemical analysis; Serology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000600034