Browsing by Author "Bonvicino, Cibele R. (Cibele Rodrigues)"
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Item Systematic review of genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia, Cricetidae, Sigmodontinae, Oryzomyini) : with description of two new species from eastern Brazil ; American Museum novitates, no. 3622(New York, NY : American Museum of Natural History, 2008) Percequillo, Alexandre Reis.; Hingst-Zaher, Erika.; Bonvicino, Cibele R. (Cibele Rodrigues)Cerradomys is a monophyletic genus that includes four known species, Cerradomys subflavus, C. maracajuensis, C. marinhus, and C. scotti, distributed throughout the open vegetation belt across South America, from northeastern Brazil to southeastern Bolivia, and from eastern to northwestern Paraguay. We revised the status of the species currently assigned to this genus by analyzing skins, skulls, karyotypes, and cytochrome b DNA sequences. We also described two novel species, one distributed in the Brazilian states of Minas Gerais, Bahia, and Sergipe, and the other in the states of Paraíba, Pernambuco, Piauí, Ceará, and Maranhão. Molecular analysis suggested the following phylogenetics arrangement: (((C. subflavus-C. sp.n.2) C. sp.n.1) C. scotti)(C. marinhus-C. maracajuensis)). Apparently, both novel species inhabit the Caatinga domain and penetrated the coastal Atlantic rainforest, differing from the remaining congeneric species that are typical open-area inhabitants.Item The taxonomic status of Oligoryzomys mattogrossae (Allen 1916) (Rodentia, Cricetidae, Sigmodontinae), reservoir of Anajatuba hantavirus. (American Museum novitates, no. 3880)(American Museum of Natural History., 2017-05-02) Weksler, Marcelo.; Lemos, Elba R. Sampaio de; D'Andrea, Paulo Sérgio.; Bonvicino, Cibele R. (Cibele Rodrigues)Species of the cricetid genus Oligoryzomys are found across most Neotropical biomes, and several of them play important roles as natural reservoirs of hantaviruses and arenaviruses. Here we demonstrate that O. mattogrossae, previously considered a junior synonym of O. microtis, is a valid species, and that it is the oldest available name for specimens previously identified as O. fornesi from Brazil and northern Paraguay. Comparative morphology and phylogenetic analyses based on mitochondrial (cytochrome b) and nuclear (intron 7 of beta-fibrinogen) genes show that O. mattogrossae differs from its sister species O. microtis and from other forms of the genus, corroborating previously published karyological data. Oligoryzomys mattogrossae occurs in Cerrado and Caatinga habitats throughout central and northeastern Brazil and Paraguay, whereas distribution of O. fornesi is apparently restricted to southern Paraguay and northernmost Argentina. Specimens of O. mattogrossae were found to be the natural reservoir of the Anajatuba genotype of hantavirus in northeastern Brazil. Therefore, continuing efforts to delimit Oligoryzomys species and facilitate their identification are important for zoonotic monitoring.