|
|
|
|
|
| Bonvicino,Cibele R.; Fernandes,Fabiano A.; Viana,Maria C.; Bernardo,R. Teixeira; D'Andrea,Paulo S.. |
| The swamp rats are distributed in Argentina, southern Paraguay, Uruguay and southern Brazil, with two species currently accepted: Scapteromys aquaticus Thomas, 1920 and Scapteromys tumidus Waterhouse, 1837. While S. aquaticus occurs in Argentina, Paraguay and western Uruguay, S. tumidus occurs in Brazil and Uruguay. Here we report for the first time the occurrence of S. aquaticus in gallery forest remnants in Southern Brazil. Karyologic analysis showed 2n = 32 and FNa = 40. Phylogenetic analyses, based on DNA sequences from the mitochondrial cytochrome-b gene indicate that the Brazilian and the Argentinian specimens of S. aquaticus shared one haplotype, while median joining analysis showed lack of population structure. This register, plus the karyotype... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: New record; Southern Brazil; Species limits; Swamp rat. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200016 |
| |
|
|
| Andreazzi,Cecilia S. de; Rademaker,Vitor; Gentile,Rosana; Herrera,Heitor M.; Jansen,Ana M.; D'Andrea,Paulo S.. |
| The Pantanal is a South American biome characterized by extensive plains and stark environmental seasonality. Several habitats are subject to annual flooding, forcing small mammal species to aggregate in dry forest patches, which most likely influences their population dynamics and life history strategies. In order to investigate the seasonal influence on the life history traits of these small mammals, we conducted a 2-year mark-recapture study in the southeastern region of the Brazilian Pantanal (Nhecolândia) and analyzed the population dynamics of the most abundant small mammal species with the jackknife estimator. A trapping effort of 21,560 trap-nights resulted in 615 individuals in 1,171 captures (success = 5.43%). Three species of rodents - Oecomys... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gracilinanus agilis; Oecomys mamorae; Population dynamics; Seasonality; Small mammal; Thrichomys pachyurus. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600009 |
| |
|
|
|
