Publications

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comparison of automatic traps to capture mosquitoes (diptera: culicidae) in rural areas in the tropical atlantic rainforest.in several countries, surveillance of insect vectors is accomplished with automatic traps. this study addressed the performance of mosquito magnet® independence (mmi) in comparison with those of cdc with co2 and lactic acid (cdc-a) and cdc light trap (cdc-lt). the collection sites were in a rural region located in a fragment of secondary tropical atlantic rainforest, southeastern brazil. limatus durhami and limatus flavisetosus were the dominant species in the mmi, whereas ochlerotatus scapulari ...024402154
natural enzootic vectors of venezuelan equine encephalitis virus, magdalena valley, colombia.to characterize the transmission cycle of enzootic venezuelan equine encephalitis virus (veev) strains believed to represent an epizootic progenitor, we identified natural vectors in a sylvatic focus in the middle magdalena valley of colombia. hamster-baited traps were placed into an active forest focus, and mosquitoes collected from each trap in which a hamster became infected were sorted by species and assayed for virus. in 18 cases, a single, initial, high-titered mosquito pool representing t ...200312533281
molecular phylogeny of the vomerifer and pedroi groups in the spissipes section of the subgenus culex (melanoconion).members of the new world mosquito subgenus melanoconion of the genus culex are important vectors of many alphaviruses including eastern and venezuelan equine encephalitis viruses (veev). we investigated the phylogenetic relationships among nine putative species of the vomerifer and pedroi groups of the neotropical spissipes section by sequencing the internal transcribed spacer 2 (its-2) region of ribosomal dna and using phylogenetic analyses. results demonstrated that, within the spissipes secti ...200415311446
ecological characterization of the aquatic habitats of mosquitoes (diptera: culicidae) in enzootic foci of venezuelan equine encephalitis virus in western venezuela.we studied the aquatic mosquito habitats in and around enzootic foci of venezuelan equine encephalitis virus (vee) in western venezuela. specimens were sampled for 5 mo in three types of vegetation: tall lowland tropical forests, short inundated/secondary growth forests, and pastures/herbaceous vegetation around forests. ground pools, flooded pastures, swamps, ponds, and canals predominated. we used a multivariate statistical approach to quantitatively assess the relationships of mosquito specie ...200515962775
isolation of viruses from mosquitoes (diptera: culicidae) collected in the amazon basin region of peru.as part of a comprehensive study on the ecology of arthropod-borne viruses in the amazon basin region of peru, we assayed 539,694 mosquitoes captured in loreto department, peru, for arboviruses. mosquitoes were captured either by dry ice-baited miniature light traps or with aspirators while mosquitoes were landing on human collectors, identified to species, and later tested on vero cells for virus. in total, 164 virus isolations were made and included members of the alphavirus (eastern equine en ...200516366001
susceptibility of peruvian mosquitoes to eastern equine encephalitis virus.mosquitoes were collected in the amazon basin, near iquitos, peru, and used in experimental studies to evaluate their susceptibility to strains of eastern equine encephalitis virus (eeev) that were isolated from mosquitoes captured within 20 km of iquitos. when fed on hamsters or chickens with a viremia of 4105 plaque-forming units (pfu) of eeev/ml, culex pedroi sirivanakarn and belkin, aedesfulvus (wiedemann), psorophora albigenu (peryassu), and psorophoraferox (von humboldt) were susceptible t ...200818714873
evolutionary patterns of eastern equine encephalitis virus in north versus south america suggest ecological differences and taxonomic revision.the eastern equine encephalitis (eee) complex consists of four distinct genetic lineages: one that circulates in north america (na eeev) and the caribbean and three that circulate in central and south america (sa eeev). differences in their geographic, pathogenic, and epidemiologic profiles prompted evaluation of their genetic diversity and evolutionary histories. the structural polyprotein open reading frames of all available sa eeev and recent na eeev isolates were sequenced and used in evolut ...201019889755
diversity of mosquito vectors (diptera: culicidae) in caxiuanã, pará, brazil.this paper presents a study based on ecological parameters represented by diversity and richness indices applied in a community of mosquitoes (diptera: culicidae), at the national forest of caxiuanã, melgaço municipality, state of pará, in the brazilian amazon. a total of 25,433 specimens of culicids were collected in the study, from five field collection periods, over 10 months, between 2005 and 2006. specimens were collected in four heights of the forest (ground level, 8 m, 16 m, and 30 m-cano ...201222997514
[mosquitoes (diptera: culiciadae) as potential vectors of arboviruses in the urabá region, northwest of colombia].studies directed to investigate ecological parameters of sylvatic mosquitoes populations permit the establishment of risk levels in the transmission of arboviruses and provide the basis for recommendations to health authorities about prevention, surveillance and control.201223242299
species diversity, seasonal, and spatial distribution of mosquitoes (diptera: culicidae) captured in aotus monkey-baited traps in a forested site near iquitos, peru.this study was conducted to determine the relative abundance, diversity, seasonal, and vertical distributions of potential mosquito vectors in the amazon basin, peru. a total of 66,097 mosquitoes (50 mosquito species from 12 genera) were collected from may 2001 through march 2002 at a forested site near iquitos, peru. mosquitoes were collected using aotus nancymae hershkovitz monkey-baited cdc light traps set for 12-h day and night periods at varying heights (e.g., ground and canopy) in the fore ...201426309298
variation in mitochondrial cytochrome c oxidase i dna can successfully identify culex (melanoconion) pedroi (diptera: culicidae) and culex (melanoconion) ribeirensis (diptera: culicidae).culex (melanoconion) pedroisirivanakarn & belkin 1980 and culex (melanoconion) ribeirensisforattini & sallum 1985 are two morphologically very similar species of the pedroi subgroup of mosquitoes in the spissipes section of the subgenus melanoconion of the genus culex l. 1758. we carried out an analysis of the mitochondrial cytochrome c oxidase i (coi) dna variation between these two species. the recent observation of sympatric coexistence in a forested area of rio de janeiro state (brazil) trig ...201728011729
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