A5014773450- Viral Infections and Vectors
- Vector-borne infectious diseases
- Evolution and Paleontology Studies
- Parasite Biology and Host Interactions
- Trypanosoma species research and implications
- Mosquito-borne diseases and control
- Parasites and Host Interactions
- Wildlife Ecology and Conservation
- Research on Leishmaniasis Studies
- Zoonotic diseases and public health
- Animal Ecology and Behavior Studies
- Fire effects on ecosystems
- Helminth infection and control
- Bat Biology and Ecology Studies
- Viral Infections and Outbreaks Research
- Primate Behavior and Ecology
- Yersinia bacterium, plague, ectoparasites research
- Vector-Borne Animal Diseases
- Pleistocene-Era Hominins and Archaeology
- Leptospirosis research and findings
- Bartonella species infections research
- Environmental Sustainability and Education
- Genetic Mapping and Diversity in Plants and Animals
- Genetic diversity and population structure
- Morphological variations and asymmetry
Fundação Oswaldo Cruz
2016-2025
Faculdades Oswaldo Cruz
2006-2023
Universidade Federal do Rio de Janeiro
2009-2020
Ministério da Saúde
2015
Universidade do Estado do Rio de Janeiro
2011-2012
Instituto Evandro Chagas
2012
Ministério da Saúde
2012
Universidade do Estado do Pará
2012
International Olive Council
2012
Universidade de Brasília
2011
In the middle of a political and fiscal crisis, Brazilian government is applying successive budget cuts, including in science funding. Recent cuts radically affect research programs on biodiversity that are crucial components for design monitoring public policies nature conservation sustainable development. We analyze consequences such Research Program Biodiversity (PPBio), largest network Brazil (626 researchers, nine networks all biomes). holds substantial part world's tropical forests...
In developing countries, outbreaks of zoonotic diseases (ZDs) result from intertwined ecological, socioeconomic, and demographic processes that shape conditions for (i) increased contact between vulnerable human population wildlife in areas undergoing environmental degradation (ii) the rapid geographic spread infections across socially regions. Brazil, recent increases social vulnerabilities, amplified by economic political crises, are potential triggers outbreaks. We discuss Brazilian...
We report Trypanosoma cruzi infection in wild and domestic mammals from three orally acquired Chagas disease outbreak areas Brazil. Cachoeiro do Arari (Pará) displayed a panzootic scenery (positive all ecologic strata), human cases were probably the consequence of their exposure within sylvatic T. transmission cycle. In Navegantes (Santa Catarina), Didelphis spp. was main reservoir host, given that 93% infected. Redenção (Ceará), Monodelphis domestica Thrichomys laurentius also important...
Abstract Schistosoma mansoni is the most widespread of human‐infecting schistosomes, present in 54 countries, predominantly Africa, but also Madagascar, Arabian Peninsula, and Neotropics. Adult‐stage parasites that infect humans are occasionally recovered from baboons, rodents, other mammals. Larval stages parasite dependent upon certain species freshwater snails genus Biomphalaria , which largely determine parasite's geographical range. How S . genetic diversity distributed geographically...
The Neotropics harbors a high diversity of species and several hypotheses have been proposed to account for this pattern. However, while forested domains are frequently studied, less is known from open vegetation formations occupying, altogether, larger area than the Amazon Forest. Here we evaluate role historical barriers riverine hypothesis in speciation patterns small mammals by analyzing an ancient rodent lineage (Thrichomys, Hystricomorpha). Phylogenetic biogeographic analyses were...
Wild animals are infected by diverse parasites, but how they influence host health is poorly understood. We examined the relationship of trypanosomatids and gastrointestinal parasites with wild brown-nosed coatis (Nasua nasua) from Brazilian Pantanal. used coati body condition hematological parameters as response variables in linear models that were compared using an information theoretic approach. Predictors high/low parasitemias Trypanosoma cruzi T. evansi, indices representing abundance...
We studied the prevalence of Trypanosoma cruzi infection among eight species wild small mammals (n=289) in an area where human cases infection/disease have occurred. Dogs (n=52) and goats (n=56) were also surveyed. The study was carried out inside a biological reserve, National Park 'Serra da Capivara' its surroundings Piaui State, Brazil. marsupial Didelphis albiventris caviomorph rodent Trichomys apereoides found to be most important reservoirs area. abundant (80%) D. frequently infected...
SUMMARY Expansion of human activities frequently results in habitat fragmentation, a phenomenon that has been widely recognized the last decades as one major threats to world's biodiversity. The transformation continuous forest into fragmented area hyper-dynamic landscape with unpredictable consequences overall ecosystem health. effect fragmentation process on Trypanosoma cruzi infection among small wild mammals was studied an Atlantic Rain Forest landscape. Comparing continous habitat,...
Chagas disease was investigated in four periurban areas of Ceará state, northeastern Brazil, through serological, parasitological and molecular methods humans, reservoirs vectors. A cross-sectional survey revealed a seroprevalence rate 1.2% (13/1076 residents, six also proving positive PCR). Trypanosoma cruzi infection not detected children under 10 years old. Triatoma pseudomaculata prevailed the peridomiciles: 63 specimens, 69% (34/49) infected with trypanosomatids. Rhodnius nasutus...
SUMMARY Aiming to better understand the ecological aspects of Trypanosoma cruzi transmission cycles, wild carnivores, small mammals and dogs were examined for T. infection in Serra da Canastra National Park region, Brazil. Isolates genotyped using mini-exon gene PCR-RFLP (1f8 H3) genomic targets. was well established area occurred both peridomestic environments. Dog seroprevalence 29·4% (63/214) TcI TcII genotypes, besides mixed infections observed. Only detected mammals. Marsupials...
Trypanosoma cruzi infection via oral route results in outbreaks or cases of acute Chagas disease (ACD) different Brazilian regions and poses a novel epidemiological scenario. In the Espírito Santo state (southeastern Brazil), fatal case patient with ACD led us to investigate enzootic scenario avoid development new cases. At studied locality, Triatoma vitticeps exhibited high T. rates frequently invaded residences. Sylvatic domestic mammals Rio da Prata where occurred, four surrounding areas...
ABSTRACT Bartonella spp. comprise an ecologically successful group of microorganisms that infect erythrocytes and have adapted to different hosts, which include a wide range mammals, besides humans. Rodents are reservoirs about two-thirds described date; some them been implicated as causative agents human diseases. In our study, we performed molecular phylogenetic analyses infecting wild rodents from five Brazilian biomes. order characterize the genetic diversity spp., robust analysis based...
Mammarenavirus species are associated with a specific rodent host species, although an increasing number of virus has been to more than one host, suggesting that co-evolution is less robust initially thought. There few eco-epidemiological studies South America mammarenaviruses in non-endemic areas Arenavirus Hemorrhagic Fever, affecting specially our current knowledge about animal reservoirs and range host-virus relations. In Brazil, seven arenavirus were described different species. Here we...
Abstract Background Chagas disease (CD) is a neglected zoonosis that requires study through the One Health approach, as it involves various aspects of animal, environmental, and human health in its transmission cycle. This affects 7 million people 20 countries Latin America, resulting approximately seven thousand deaths annually worldwide. Local knowledge crucial for developing educational strategies to mitigate risks transmission, particularly endemic areas. Aims In this study, we present...
Abstract A five-year mark-recapture study of small mammals was conducted with sampling every two months in a rural area Sumidouro, State Rio de Janeiro, Brazil, from June 1991 to July 1996. Population sizes were estimated through MNKA estimator, survivorship and recruitment rates Jolly-Seber estimator. Nectomys squamipes Didelphis aurita the most abundant species, followed by Akodon cursor, Philander frenata Oligoryzomys nigripes. Marsupials reproduced July/August March, highest population...
The presence of acute Chagas disease (ACD) due to oral transmission is growing and expanding in several South American countries. Within the Amazon basin, Abaetetuba municipality has been a site recurrent cases spanning across distinct landscapes. Because primarily zoonotic infection, we compared enzootic Trypanosoma cruzi cycles three different environmental areas better understand this new epidemiological situation. Philander opossum was most abundant mammalian species collected (38%...
Une etude par capture-marquage et recapture de petits mammiferes a ete realisee pendant cinq and dans une vegetation arbustive cotiere bresilienne (restinga). Cinq especes mammiferes, rongeurs marsupiaux, ont capturees caracterisees rapport leur dynamique population. Akodon cursor Philander opossum presente les plus grandes densites population, qui sont correlees avec le recrutement. Ils aussi un recrutement irregulier, des fluctuations populations frequentes coefficients variation eleves,...
This study reports 2 years of the population dynamics and reproduction a small mammal community using removal method. The was conducted in rural area Atlantic Forest, Sumidouro, Rio de Janeiro State, Brazil. sizes, age structure were studied for four most common species area. overall diversity 1.67 ranged between 0.8 to 1.67. richness 13 considering whole study. abundant rodents Nectomys squamipes (n = 133), Akodon cursor 74), Oligoryzomys nigripes 25) marsupials Didelphis aurita 58)...
Schistosomiasis is a health problem in Brazil and the role of rodents maintaining schistosome life-cycle requires further clarification. The influence Schistosoma mansoni on population Nectomys squamipes was studied by capture-recapture (1st phase, from June 1991 to November 1995) removal (2nd April 1997 March 1999) studies at Sumidouro, Rio de Janeiro, Brazil. During both phases coproscopic examinations were performed. At 2nd phase perfused worms counted. dynamics parasites studied. 1st...