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| Registros recuperados: 19 | |
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| Sousa,Luciene C.C.; Gontijo,Célia M.F.; Botelho,Helbert A.; Fonseca,Cleusa G.. |
| Didelphis albiventris is a well-known and common marsupial. Due to its high adaptability, this very widespread generalist species occurs under various environmental conditions, this even including protected regions and disturbed urban areas. We studied a 653 bp fragment of cytochrome oxidase c (COI) from 93 biological samples from seven Brazilian localities, with linear distances ranging between 58 and about 1800 km to analyze the effects of geographic distances on variability and genetic differentiation. The haplotype network presented nine haplotypes and two genetic clusters compatible with the two most distant geographic areas of the states of Minas Gerais, in the southeast, and Rio Grande do Sul, in the extreme south. As each cluster was characterized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Didelphis albiventris; Marsupial; Variability; COI; Genetic differentiation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000300020 |
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| Tarragona,E.L.; Zurvera,D; Manzoli,D.E; Correa,A.I; Delgado,A.R; Magni,C; Beldomenico,P.M. |
| El objetivo de este trabajo fue evaluar la eficacia de un protocolo de anestesia con ketaminadiazepam en 42 ejemplares de D. albiventris de vida libre y determinar cuáles eran las variables que repercuten en su éxito. Las variables respuesta evaluadas fueron: si fue necesaria suplementación de dosis y tiempo al efecto deseado del fármaco en minutos. Las variables independientes fueron: sexo, peso, edad, condición corporal, largo total, frecuencia cardiaca, frecuencia respiratoria, temperatura y actividad. Individuos de talla mayor presentaron mayor probabilidad de necesitar suplementación (p=0.0686). Las hembras necesitaron más tiempo para alcanzar el plano anestésico deseado (p=0.0008). Además, el tiempo transcurrido para obtener el efecto deseado fue... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marsupial; Didelphidae; Anestesia; Argentina. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-34982014000200004 |
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| Voss,Robert S.; Fleck,David W.; Jansa,Sharon A.. |
| Gracilinanus emiliae is a species of gracile mouse opossum that is currently known from fewer than a dozen specimens. The material we examined exhibits a distinctive suite of external and craniodental characters that are unlike those of any other congeneric species. We review all published records for G. emiliae, several of which are based on misidentifications or lost material, and we report a new specimen from northeastern Peru, the first to be recorded from that country, and the first to be unequivocally associated with primary lowland rain forest. The available distributional data suggest that G. emiliae (or a complex of cryptic taxa with the same morphological characters) is very widely distributed in Amazonia and perhaps also in Venezuelan coastal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Mammal; Marsupial; Neotropical; Rainforest. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000200015 |
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| Hirayama, Kentaro; Taufik, Epi; Kikuchi, Megumi; Nakamura, Tadashi; Fukuda, Kenji; Saito, Tadao; Newgrain, Keith; Green, Brian; Messer, Michael; Urashima, Tadasu. |
| Previous structural characterizations of marsupial milk oligosaccharides have been performed in the tammar wallaby, red kangaroo, koala, common brushtail possum and the eastern quoll. To clarify the homology and heterogeneity of milk oligosaccharides among marsupial species, which could provide information on their evolution, the oligosaccharides of wombat milk carbohydrate were characterized in this study. Neutral and acidic oligosaccharides were isolated from the carbohydrate fractions of two samples of milk of the common wombat and characterized by H-1-nuclear magnetic resonance spectroscopy. The structures of six neutral saccharides were found to be Gal(1-4)Glc (lactose), Gal(1-3)Gal(1-4)Glc (3'-galactosyllactose), Gal(1-3)Gal(1-3)Gal(1-4)Glc... |
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Palavras-chave: Common wombat; Marsupial; Milk oligosaccharide; Vombatus ursinus. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4471 |
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| Fonseca,Raul; Astúa,Diego. |
| We analyzed the geographic variations in the shape and size of the cranium and mandible of two woolly opossums, Caluromys derbianus and Caluromys lanatus. Using geometric morphometrics we analyzed 202 specimens of C. derbianus and 123 specimens of C. lanatus, grouped in 7 and 9 populations, respectively. We found sexual dimorphism in shape variables only in the dorsal view of the cranium of Caluromys derbianus, which is not associated with geographical origin. We detected geographic variation in the size of the mandible in two populations (Nicaragua and Northern Panama), but no geographic variation in shape. The size of the cranium of C. lanatus varies significantly, with clinal variation in peri-Amazon populations, with a break between two populations,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caluromyinae; Geometric morphometrics; Marsupial; Neotropics; Skull; Size and shape analysis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000200109 |
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| Barros-Battesti,Darci Moraes; Martins,Rosana; Bertim,Carlos Roberto; Yoshinari,Natalino Hajime; Bonoldi,Virginia L.N.; Leon,Elaine P.; Miretzki,Michel; Schumaker,Teresinha T.S.. |
| The Atlantic Forest small mammal land fauna, except bats, and the abiotic factors that might have an influence on its composition, were studied in the Itapevi County, State of Sao Paulo, a forested region, partly altered by antropic action, from January, 1995 to June, 1996. The trapping effort consisted of 2,888 trap-nights, resulting in a 4.6% trapping success and consisted of monthly trappings, for five consecutive days. During this period, 134 specimens were captured, of which 46.3% were Didelphimorphia and 53.7% were Rodentia. Eleven species were registered: two Didelphimorphia: Didelphis marsupialis (Linnaeus, 1758) and Marmosops incanus (Lund, 1841), and nine Rodentia: Akodon cursor (Winge, 1887), Bolomys lasiurus (Lund, 1841), Oxymycterus hispidus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Small mammals; Marsupial; Rodent; Atlantic Forest. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100021 |
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| Camargo,Nícholas Ferreira de; Cruz,Ramatis Machado Scarponi; Ribeiro,Juliana Fernandes; Vieira,Emerson Monteiro. |
| No presente estudo, investigamos o consumo de frutos e viabilidade de sementes consumidas pelo marsupial Gracilinanus agilis (Burmeister, 1854) em quatro áreas de cerradão do Brasil central. Análises fecais indicaram que este mamífero se alimenta de plantas pioneiras da família Melastomataceae (Miconia albicans (Sw.) Triana, M. cuspidata Naudin, M. ferruginata DC., M. pepericarpa DC., M. pohliana Cogn. e Ossaea congestiflora (Naudin) Cogn.), Solanaceae (uma espécie não identificada) e Viscaceae (Phoradendron perrottetii (DC.) Eichler, erva-de-passarinho). Detectamos o maior índice de consumo de frutos já registrado para o gênero Gracilinanus, com cerca de 45% das fezes contendo sementes e 86% contendo itens derivados de frutos (N=422). Com exceção de O.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Frutos; Germinação; Marsupial; Melastomataceae. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300018 |
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| Ribeiro, Gláucia Marques Freitas; UFV; Fonseca, Cláudio César; Universidade Federal de Viçosa; Rodrigues, Sirlene Souza; Universidade Federal de Viçosa; Matta, Sérgio Luis Pinto da; Universidade Federal de Viçosa; Neves, Clovis Andrade; Universidade Federal de Viçosa. |
| The objective of this study was to quantify argyrophillic, argentaffin and insulin immunoreactive endocrine cells in the different segments of the small intestine of Didelphis aurita and measure probable differences in the number of these cells between adult and post-pubertal animals. Biological material consisted of ten male and female opossums specimen, divided in two groups according to weigh. The utilized staining techniques were Grimelius, modified Masson-Fontana and direct immunoperoxidase. Results indicated a predominance of argyrophillic cells in the small intestine of opossums from class 1 and 2, with an average of 52.58 and 56.15 cells mm-2, respectively; of which, the average number of total endocrine cells, argyrophillic and argentaffin cells... |
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Palavras-chave: 2.00.00.00-6; 2.06.01.00-0 digestive tract; Endocrine cells; Immunoreactive cells; Mammal; Marsupial Citologia e Biologia Celular digestive tract; Endocrine cells; Immunoreactive cells; Mammal; Marsupial. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/8644 |
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| NARCISO,MARCELO S.; HOKOÇ,JAN NORA; MARTINEZ,ANA M. B.. |
| In this paper we report a qualitative morphological analysis of Wallerian degeneration in a marsupial. Right optic nerves of opossums Didelphis marsupialis were crushed with a fine forceps and after 24, 48, 72, 96 and 168 hours the animals were anaesthetized and perfused with fixative. The optic nerves were immersed in fixative and processed for routine transmission electron microscopy. Among the early alterations typical of axonal degeneration, we observed nerve fibers with focal degeneration of the axoplasmic cytoskeleton, watery degeneration and dark degeneration, the latter being prevalent at 168 hours after crush. Our results point to a gradual disintegration of the axoplasmic cytoskeleton, opposed to the previous view of an "all-or-nothing'' process... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ultrastructure; Nerve fiber; Crush lesion; Watery degeneration; Dark degeneration; Marsupial. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000200008 |
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| Junges,Susana de Oliveira; Consatti,Guilherme; Périco,Eduardo; Bordignon,Sérgio Augusto de Loreto; Freitas,Elisete Maria de; Cademartori,Cristina Vargas. |
| Abstract Seed dispersal is a process that is fundamental to maintenance of forest ecosystems, enabling plants to successfully germinate in sites that are favorable to their growth, minimizing risks of competition, the action of pathogens and predation by herbivores. Intraspecific and seasonal variations in fruit consumption by Didelphis albiventris, and its contribution to dispersal and germination of endozoochorous seeds were analyzed in a Semideciduous seasonal forest. The study was conducted at Morro do Coco, which is a hilly area in the municipal district of Viamão, RS, Brazil, bordering the shore of Guaíba lake (30º16’15”S, 51º02’54”W), between June 2013 and May 2014, with a total sampling effort of 2992 trap-nights. A total of 18 individuals were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: White-eared opossum; Germination inductor; Marsupial; Atlantic Rain Forest; Zoochory. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100201 |
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| Monticelli,Patrícia Ferreira; Gasco,Aline. |
| Abstract: Choosing the nest site to raise a litter has consequences on female fitness in mammalian species with no male participation in the parental care. We accidentally video recorded a coati's nest appropriation by a female opossum Didelphis aurita, at Parque Ecológico do Tietê, State of São Paulo, Brazil. For 29 days, from December 22, 2011, to January 19th, 2012, the activity of the female was video recorded 24h/day with a camera trap installed close to the nest. At her first appearance, she had infants in her pouch. After taking leaves to the nest twice on the first night, she kept a routine of going out after sunset and returning to the nest before dawn, carrying leaves on the tail on seven occasions. During the last days of recording, infants were... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Nasua nasua; Marsupial; Nest appropriation; Nidification; Common opossum; Parental behavior. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300602 |
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| Abel,Isis dos Santos; Almeida Junior,Denclair Escobar de; Fonseca,Adivaldo Henrique da; Soares,Cleber Oliveira; Ishikawa,Márcia Mayumi. |
| Fifty-six opossums (Didelphis aurita) were captured on the campus of Universidade Federal Rural do Rio de Janeiro, Seropédica county, Rio de Janeiro state, in order to investigate the occurrence of Borrelia sp among them in relation with the study of spirochaetemia and its ectoparasites. Blood tests were made through dark field and phase contrast microscopy, as well as the obtainment of blood smears. Smears were stained with Giemsa stain, which did not prove efficacy. There was no relation between results obtained through blood tests (13 opossum positive for Borreliasp.), and this technique (two positive animals). Parasitaemia studies of 37 animals kept in captivity as well as of several recaptures in which animals once negative proved to be positive days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Borrelia sp.; Didelphis aurita; Marsupial; Amblyomma cajennense; Ctenocephalides sp. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000300010 |
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| Binder,Lina de Campos; Krawczak,Felipe da Silva; Sponchiado,Jonas; Melo,Geruza Leal; Moraes-Filho,Jonas; Bastos,Fernanda Aparecida Nieri; Cáceres,Nilton Carlos; Labruna,Marcelo Bahia. |
| ABSTRACT: This study aimed to evaluate exposure of wild small mammals to spotted fever group (SFG) rickettsiae in Mato Grosso do Sul State, central-western Brazil. Serum samples of 68 small mammals were analyzed by indirect immunofluorescence assay (IFA) against six Rickettsia species from Brazil. Overall, 37.5% (9/24) marsupials and 6.8% (3/44) small rodents were seroreactive to at least one of the Rickettsia species, with end point titres ranging from 64 to 512. These results suggested that wild small mammals were infected by SFG rickettsiae, and could participate in the ecology of rickettsiae in Mato Grosso do Sul, Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marsupial; Mato Grosso do Sul; Rodent Brazilian spotted fever; IFA. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100453 |
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| Registros recuperados: 19 | |
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