| three new species of laelaps (acari: laelapidae) associated with small mammals in central brazil. | three new species of laelaps koch are described and illustrated from small mammals in the federal district of brazil. each new species is primarily associated with one species of rodent: l. valdevinoi n. sp. from calomys tener (winge); l. fonsecai n. sp. from rhipidomys mastacalis (lund); and l. furmani n. sp. from oryzomys bicolor (tomes). two of the new species were previously included under names species, from which they are now separated: l. fonsecai n. sp. from l. paulistanensis fonseca, 19 ... | 1992 | 1552531 |
| diagnosis of hantavirus infection in humans and rodents in ribeirão preto, state of são paulo, brazil. | hantavirus pulmonary and cardiovascular syndrome (hpcs) is an emerging serious disease in the americas. hantaviruses (bunyaviridae) are the causative agents of this syndrome and are mainly transmitted through inhalation of aerosols containing the excreta of wild rodents. in the ribeirão preto region (state of são paulo, brazil), hpcs has been reported since 1998, caused by the araraquara virus (arav), for which necromys lasiurus is the rodent reservoir. this study aimed to show diagnostic result ... | 2010 | 20802928 |
| a novel polyomavirus in sigmodontine rodents from são paulo state, brazil. | the nearly complete genome sequence of a novel polyomavirus from blood samples of akodon montensis and calomys tener collected in brazil was determined by high-throughput sequencing. this virus showed a typical polyomaviruses genome organization, and it was classified as a member of the genus betapolyomavirus. our results expand the host range and viral diversity of the family polyomaviridae. | 2018 | 29931397 |
| novel orthohepeviruses in wild rodents from são paulo state, brazil. | the hepeviridae comprise single-stranded positive-sense rna viruses classified into two genera, orthohepevirus and piscihepevirus. orthohepeviruses have a wide host range that includes rodents, but previous studies had been restricted to rodents of the muridae family. in this study, we applied a high-throughput sequencing approach to examine the presence of orthohepeviruses in rodents from são paulo state, brazil. we also used rt-pcr to determine the frequency of orthohepeviruses in our sampled ... | 2018 | 29627586 |
| a novel hepacivirus in wild rodents from south america. | the hepacivirus genus comprises single-stranded positive-sense rna viruses within the family flaviviridae. several hepaciviruses have been identified in different mammals, including multiple rodent species in africa, asia, europe, and north america. to date, no rodent hepacivirus has been identified in the south american continent. here, we describe an unknown hepacivirus discovered during a metagenomic screen in akodon montensis, calomys tener, oligoryzomys nigripes, necromys lasiurus, and mus ... | 2019 | 30909631 |
| dna barcoding of sigmodontine rodents: identifying wildlife reservoirs of zoonoses. | species identification through dna barcoding is a tool to be added to taxonomic procedures, once it has been validated. applying barcoding techniques in public health would aid in the identification and correct delimitation of the distribution of rodents from the subfamily sigmodontinae. these rodents are reservoirs of etiological agents of zoonoses including arenaviruses, hantaviruses, chagas disease and leishmaniasis. in this study we compared distance-based and probabilistic phylogenetic infe ... | 2013 | 24244670 |
| pinhal virus, a new arenavirus isolated from calomys tener in brazil. | arenavirus sabiá was originally isolated from a fatal human infection in brazil, and after the occurrence of the second fatal human case in são paulo state, epidemiologic and virologic studies were performed in the area where the patient lived, aiming at the identification of the sabiá natural rodent reservoir. a broadly cross-reactive enzyme-linked immunosorbent assay (elisa) was used to screen for antibody-positive samples. antibodies to arenavirus were detected in two of the 55 samples of cal ... | 2015 | 26501215 |
| allometric relations of neotropical small rodents (sigmodontinae) in anthropogenic environments. | the present study aims at assessing allometric relationships in the sigmodontinae rodents (calomys tener, akodon cf. montensis, necromys lasiurus, oligoryzomys flavescens, and oligoryzomys nigripes), and morphological variation among different habitats in human-dominated environments in southeastern brazil. we captured rodents using pitfall traps placed in eucalyptus plantations, abandoned pastures, and remnants of secondary native vegetation, and took the following measurements: body mass, tota ... | 2013 | 23829219 |
| serological survey of hantavirus in rodents in uberlândia, minas gerais, brazil. | we conducted a serological survey to determine the presence of hantavirus infection in rodents in uberlândia, minas gerais as well as to identify and characterize associated factors. rodents were captured using sherman live-capture traps set in rural and peri-urban environments. a total of 611 rodents were captured. there was a higher trap success in peri-urban areas (26.3%) and a higher prevalence of antibodies among rodents captured in rural areas (2.9%). necromys lasiurus was the most common ... | 2013 | 23740018 |
| barn owl (tyto alba) predation on small mammals and its role in the control of hantavirus natural reservoirs in a periurban area in southeastern brazil. | the aim of this study was to inventory the species of small mammals in uberlândia, minas gerais, brazil, based on regurgitated pellets of the barn owl and to compare the frequency of rodent species in the diet and in the environment. since in the region there is a high incidence of hantavirus infection, we also evaluate the importance of the barn owl in the control of rodents that transmit the hantavirus. data on richness and relative abundance of rodents in the municipality were provided by the ... | 2008 | 19197490 |