| small mammal populations of an agroecosystem in the atlantic forest domain, southeastern brazil. | this study reports 2 years of the population dynamics and reproduction of a small mammal community using the removal method. the study was conducted in a rural area of the atlantic forest, in sumidouro, rio de janeiro state, brazil. the population sizes, age structure and reproduction were studied for the four most common species in the study area. the overall diversity was 1.67 and ranged between 0.8 to 1.67. the species richness was 13 considering the whole study. the most abundant species wer ... | 2007 | 17505767 |
| phylogenetic characterization of hantaviruses from wild rodents and hantavirus pulmonary syndrome cases in the state of parana (southern brazil). | over 1,100 cases of hantavirus pulmonary syndrome (hps) have occurred in brazil since 1993, but little is known about brazilian hantaviruses, and many of their rodent hosts remain unknown. the araucaria hantavirus (arauv) was described recently from hps patients from paraná, in southern brazil, but its host could not be identified. in this study, rodents were captured from regions with high hps prevalence to address this issue. arauv rna was detected in three distantly related rodent species: ol ... | 2009 | 19439554 |
| characterization of juquitiba virus in oligoryzomys fornesi from brazilian cerrado. | the juquitiba virus, an agent of hantavirus cardiopulmonary syndrome, is one of the most widely distributed hantavirus found in south america. it has been detected in oligoryzomys nigripes, akodon montensis, oxymycterus judex, akodon paranaensis in brazil and in o. nigripes, oryzomys sp. and oligoryzomys fornesi rodents in argentine, paraguay and uruguay. here, we report the genomic characterization of the complete s segment from the juquitiba strain, isolated from the lung tissues of o. fornesi ... | 2014 | 24674957 |
| hantavirus infection prevalence in wild rodents and human anti-hantavirus serological profiles from different geographic areas of south brazil. | paraná state presents the fourth highest number of accumulated cases of hantavirus pulmonary syndrome in brazil. to map the risk areas for hantavirus transmission we carried out a study based on rodent trapping and determined the anti-hantavirus seroprevalence in these animals and in the inhabitants of these localities. overall seroprevalence in rodents and humans were 2.5% and 2.4%, respectively. eighty-two percent of the seropositive rodents were genetically analyzed. phylogenetic analyses rev ... | 2012 | 22855773 |
| amblyomma yucumense n. sp. (acari: ixodidae), a parasite of wild mammals in southern brazil. | during 2013-2014, adult ticks were collected on the vegetation and subadult ticks were collected from small mammals [didelphis aurita wied-neuwied, sooretamys angouya (fischer), euryoryzomys russatus (wagner), akodon montensis thomas, oxymycterus judex thomas] in an atlantic rainforest reserve in southern brazil. analyses of the external morphology of the adult ticks revealed that they represent a new species, amblyomma yucumense n. sp. partial 16s rrna sequences generated from males, females, a ... | 2015 | 26336277 |
| population ecology of hantavirus rodent hosts in southern brazil. | in this study we analyze population dynamics of hantavirus rodent hosts and prevalence of infection over a 2-year period in southern brazil, a region with a high incidence of hantavirus pulmonary syndrome. the 14 small mammal species captured were composed of 10 rodents and four marsupials, the six most abundant species being akodon serrensis, oxymycterus judex, akodon montensis, akodon paranaensis, oligoryzomys nigripes, and thaptomys nigrita. these species displayed a similar pattern with incr ... | 2014 | 24935954 |