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| Registros recuperados: 15 | |
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| Svartman,Marta. |
| Marsupials, one of the three main groups of mammals, are only found in Australia and in the American continent. Studies performed in Australian marsupials have demonstrated the great potential provided by the group for the understanding of basic genetic mechanisms and chromosome evolution in mammals. Genetic studies in American marsupials are relatively scarce and cytogenetic data of most species are restricted to karyotype descriptions, usually without banding patterns. Nevertheless, the first marsupial genome sequenced was that of Monodelphis domestica, a South American species. The knowledge about mammalian genome evolution and function that resulted from studies on M. domestica is in sharp contrast with the lack of genetic data on most American... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marsupials; Cytogenetics; Chromosome evolution. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400002 |
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| Pereira,Núbia P.; Ventura,Karen; Silva Júnior,Magno C.; Silva,Daniela de Melo e; Yonenaga-Yassuda,Yatiyo; Pellegrino,Katia C. M.. |
| The karyotypes of 23 specimens belonging to 16 species from nine genera of Brazilian marsupials (family Didelphidae) were studied. The animals were collected in eight localities of Cerrado or Atlantic Forest biomes in the states of Goiás, Tocantins and São Paulo. The karyotypes were analyzed after conventional Giemsa staining and silver staining of the nucleolus organizer regions (Ag-NORs). New karyotypic data were obtained for Gracilinanus microtarsus (2n = 14, FN = 24), Marmosops paulensis (2n = 14, FN = 24) , Micoreus paraguayanus (2n = 14, FN = 20) and Monodelphis rubida (2n = 18, FN = 32) and are discussed in detail. The karyotypes of G. microtarsus , M. paulensis and M. paraguayanus include three large pairs of submetacentrics (pairs 1, 2... |
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Palavras-chave: Marsupials; Karyotypes; Cytogenetics; Didelphidae; NORs. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500014 |
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| Santos-Filho,Manoel; da Silva,Dionei J.; Sanaiotti,Tânia M.. |
| We sampled the small mammal community inhabiting semi-deciduous forest fragments in Mato Grosso, Brazil, using 4 different types of traps, Tomahawk, Sherman, snap, and pitfall, in order to evaluate the efficiency of different trap types in sampling efforts. During our study, we captured a total of 984 individuals of 27 species over 33 800 trap/nights. Sherman traps captured a significantly greater abundance of individuals and higher species richness than the other 3 types of traps. The Tomahawk and snap traps exhibited similar capture rates, in both the number of individuals and species captured. Pitfall traps captured the fewest numbers of individuals and species and were the only trap type to have different, although not significant, capture rates... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marsupials; Mato Grosso; Rodents; Semi-deciduous forest fragments; Traps. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000200005 |
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| Lessa,Leonardo G; Geise,Lena. |
| We investigated the diet of gracile mouse opossum, Gracilinanus agilis (Burmeister, 1854), from the analysis of 144 fecal samples collected between November 2009 and October 2011 in an area of savanna riparian forest in the Brazilian Cerrado. Invertebrates were the most frequently consumed food items (96.5%) followed by fruits of pioneer species (29.8%) and flowers (6%). We also observed the presence of fragments of bird vertebrae and downs in samples from 2 adult males, this being the first record of predation on small vertebrates by G. agilis. The presence of fragments of birds in the feces of the gracile mouse opossum suggests that despite the small size of this species and its primarily insectivorous habits, small vertebrates may be included in its diet. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Cerrado; Didelphimorphia; Diet; Feeding ecology; Marsupials. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000100016 |
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| Urashima, Tadasu; Yamamoto, Tomoko; Hirayama, Kentaro; Fukuda, Kenji; Nakamura, Tadashi; Saito, Tadao; Newgrain, Keith; Merchant, Jim; Green, Brian; Messer, Michael. |
| Milk oligosaccharides were separated from the carbohydrate fraction of milk of the tiger quoll a species of marsupial that is closely related to the eastern quoll, Dasyurus viverrinus. They were characterized by H-1 - nuclear magnetic resonance spectroscopy and matrix - assisted laser desorption/ionization time-of-flight mass spectrometry. The following oligosaccharides were identified; Gal(beta 1-3) Gal(beta 1-4) Glc, Gal(beta 1-3) Gal(beta 1-3) Gal(beta 1-4) Glc, Gal(beta 1-3)[Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-4) Glc, Gal(beta 1-3) Gal(beta 1-3)[Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-4) Glc, Gal(beta 1-3)[Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-3) Gal(beta 1-4) Glc, Gal(beta 1-3)[Gal(beta 1-3) Gal(beta 1-4) GlcNAc(beta 1-6)] Gal(beta 1-4)... |
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Palavras-chave: Tiger quoll; Milk oligosaccharides; Marsupials. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4528 |
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| Loretto,Diogo; Vieira,Marcus Vinícius. |
| Despite the great diversity of Brazilian Atlantic forest small mammals, natural history of most species is unknown due to their cryptic and nocturnal habits, but also due to the inadequacy of methods to capture some species, especially those of arboreal habits. A new technique, based on the use of artificial nests (AN) to record arboreal marsupials, is presented. Artificial nests were combined with traditional live traps to study the population ecology of four didelphid marsupial species. After 62 months of monitoring, 119 individuals were recorded 243 times (total success = 5.2%). Only 26 individuals (22%) were recorded by both AN and live trap methods, and two of the four species were never captured by live traps, only by AN. Live traps alone would have... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Didelphidae; Mark-recapture; Live trapping; Population dynamics; Marsupials. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300013 |
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| Gentile,Rosana; Cardoso,Thiago S.; Costa-Neto,Sócrates F.; Teixeira,Bernardo R.; D’Andrea,Paulo S.. |
| ABSTRACT The Atlantic Forest is one of the most disturbed Brazilian biomes, with 183 out of 298 species of mammals occurring in the state of Rio de Janeiro. In this study, we aimed to characterize the diversity, community structure, and habitat use of small mammals in the FIOCRUZ Atlantic Forest Campus (CFMA), including areas of Pedra Branca State Park (PBSP, subunit Pau da Fome), state of Rio de Janeiro. We also compared species diversity and composition between two moments 15 years apart (2001 and 2012-2015) and analyzed the population dynamics of the marsupial Didelphis aurita (Wied-Neuwied, 1826). Small mammal captures were made in different habitats: sylvatic-urban interface areas near human dwellings, disturbed forest, and preserved forest areas.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Diversity; Habitat disturbance; Marsupials; Rodents. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100323 |
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| MACNAB,BRIAN K.. |
| Most of the variation (98.8 %) in basal rate of metabolism (BMR) in 70 species of marsupials is correlated with body mass, although lowland species have higher basal rates than highland species and burrowers have lower basal rates than non-burrowers. These factors collectively account for 99.2 % of the variation in marsupial BMR. Marsupials differ in BMR from eutherians by having no species with a high basal rate by general mammalian standards, even when consuming vertebrates or grass, food habits that are associated with very high basal rates in eutherians. The absence of high basal rates in marsupials reflects the absence of a correlation of rate of reproduction with basal rate, a correlation present in eutherians. These differences have two... |
| Tipo: Journal article |
Palavras-chave: Coexistence; Competitive exclusion; Eutherians; Marsupials; Reproduction. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200002 |
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| D'Andrea,Paulo Sergio; Gentile,Rosana; Cerqueira,Rui; Grelle,Carlos Eduardo V; Horta,Claudia; Rey,Luis. |
| A small mammal study was carried out in Pamparrão valley, Sumidouro, State of Rio de Janeiro, Brazil, from June 1991 to July 1996. The area was characterised by small rural properties with vegetable plantations, pasture lands and small forest fragments. Small mammals were captured in seven line transects along the valley. Eleven small mammal species were captured: the didelphid marsupials Didelphis aurita, Philander frenata and Monodelphis americana, and the rodents Nectomys squamipes, Akodon cursor, Oligoryzomys nigripes, Bolomys lasiurus, Oecomys concolor (Sigmodontinae), Rattus ratlus (Murinae), Proechimys iheringi and Euryzygo-matomys guiara (Echimyidae). The heterogeneous habitat configuration probably allowed the occurrence of marsupials and more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marsupials; Rodents; Cultivated areas; Brazil. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300002 |
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| Nova,Patricia Villa; Avilla,Leonardo S.; Oliveira,Édison V.. |
| The present study acknowledges the diversity of fossil marsupials from the Gruta dos Moura cave, as well as environmental and climatic aspects during the Quaternary. The results show that this is the largest diversity of Pleistocene marsupials recorded in a single cave: Didelphis albiventris, D. aurita, Gracilinanus agilis, G. microtarsus, Marmosa murina, Monodelphis brevicaudata, M. domesticaand Sairadelphys tocantinensis. Furthermore, the described specimens are also part of the only fossil assemblage unequivocally referable to the late Pleistocene. Paleontological studies suggest an intimate association with dry and open environments with high abundance of water sources. Since most of the identified taxa are characteristic of open forests and gallery... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mammals; Didelphidae; Marsupials; Northern Brazil; Quaternary; Late Pleistocene. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100193 |
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| Quintela,Fernando Marques; Gonçalves,Bruno Igure; Trindade,Gabriel Eberts; Santos,Maurício Beux dos; Tozetti,Alexandro Marques. |
| Non-volant small mammals are key elements in natural environments due its importance as food resource. This study aimed to investigate the species composition and habitat occupancy by non-volant small mammals (Didelphimorphia, Rodentia) in a coastal grassland area in southern Rio Grande do Sul coastal plain. Between April 2009 and March 2010 pitffal traps were used to capture small mammals in coastal grasslands associated to sand dunes and arbustive Restinga. We sampled 180 individuals including two marsupials (Cryptonanus guahybae and Didelphis albiventris) and seven rodent species (Calomys laucha, Cavia aperea, Ctenomys flamarioni, Deltamys kempi, Oligoryzomys flavescens, Oxymycterus nasutus and Scapteromys tumidus). Cryptonanus guahybae, D. albiventris... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal environments; Marsupials; Rodents; Calomys laucha; Oligoryzomys flavescens; Assemblage. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400284 |
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| Registros recuperados: 15 | |
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