55 research outputs found
Caracterização do meio fĂsico da Bacia HidrogrĂĄfica do Alto Taquari utilizando o sistema de informaçÔes geogrĂĄficas SGI/INPE.
bitstream/item/39642/1/DOC19-98.pd
EFFECT OF SOIL TILLAGE AND PLANT RESIDUE ON SURFACE ROUGHNESS OF AN OXISOL UNDER SIMULATED RAIN
Structural features of species of Asteraceae that arouse discussions about adaptation to seasonally dry environments of the Neotropics
Cover plants and mineral nitrogen: effects on organic matter fractions in an oxisol under no-tillage in the cerrado
Neutralising antibodies for West Nile virus in horses from Brazilian Pantanal
Despite evidence of West Nile virus (WNV) activity in Colombia, Venezuela and Argentina, this virus has not been reported in most South American countries. In February 2009, we commenced an investigation for WNV in mosquitoes, horses and caimans from the Pantanal, Central-West Brazil. The sera of 168 horses and 30 caimans were initially tested using a flaviviruses-specific epitope-blocking enzyme-linked immunosorbent assay (blocking ELISA) for the detection of flavivirus-reactive antibodies. The seropositive samples were further tested using a plaque-reduction neutralisation test (PRNT90) for WNV and its most closely-related flaviviruses that circulate in Brazil to confirm the detection of specific virus-neutralising antibodies. Of the 93 (55.4%) blocking ELISA-seropositive horse serum samples, five (3%) were seropositive for WNV, nine (5.4%) were seropositive for St. Louis encephalitis virus, 18 (10.7%) were seropositive for Ilheus virus, three (1.8%) were seropositive for Cacipacore virus and none were seropositive for Rocio virus using PRNT90, with a criteria of > four-fold antibody titre difference. All caimans were negative for flaviviruses-specific antibodies using the blocking ELISA. No virus genome was detected from caiman blood or mosquito samples. The present study is the first report of confirmed serological evidence of WNV activity in Brazil
Avaliação da diversidade arbórea das ilhas do rio Paraguai na região de Cåceres, Pantanal Matogrossense, Brasil
Spatial pattern of a fish assemblage in a seasonal tropical wetland: effects of habitat, herbaceous plant biomass, water depth, and distance from species sources
AnĂĄlise de componentes principais de atributos fĂsicos, quĂmicos e mineralĂłgicos de solos do bioma cerrado
Carbono e nitrogĂȘnio da biomassa microbiana em resposta a diferentes sistemas de manejo em um latossolo vermelho no Cerrado
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