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Collection of larvae and mosquitoes in 150 reservoirs
Since last year, Fontoura and his team have been monitoring 150 fish tanks daily and collecting samples of larvae and mosquitoes caught in traps near these sources d & # 39; water. The material is sent to the ICB, in São Paulo, for molecular badysis and identification of vector species of malaria. "Most mosquitoes caught are Anopheles transmitters of the disease, but we also collect other mosquitoes, such as Culex [pernilongo] .The biolarvicide kills them all," informs the researcher . Fontoura always talks to people who live near the floats and applies a monthly questionnaire.
Fontoura always talks with people who live near tanks and applies a monthly questionnaire. The team also checks the vegetation around the basin, if the edge is clean, measures the pH of the water and evaluates the conductivity, factors that influence the proliferation of vectors. The researcher also checks whether residents are using a product in the water. According to him, people use oil in tanks, but in addition to not eliminate the larvae, the practice can kill fish and pollute the water.
In Vila Sitting in Brazil, many reservoirs surround natural areas of waterlogging. Buritizal. "One of the research questions is how much these artificial reservoirs contribute to vector density, and how much of the larvae and mosquitoes come from these natural environments." By estimates, we can do this by tracking these reservoirs. ", Says the researcher.
Pablo Fontoura, ICB postdoctoral fellow, studies the use biolarvicides for the control of biology and biology. Anopheles parasite vector causing malaria.He and the team collect water from 150 reservoirs at Vila Assis Brasil, in Cruzeiro do Sul (Acre) – Photo: Cecília Bastos / USP Images
Biolarvicides are substances capable of killing mosquito larvae without causing damage to the environment. The project is counting on the participation of technicians: Francismar Ribeiro da Silva, Marcilio da Silva Ferreira and Anderson Sarah da Costa – Photo: Cecília Bastos / USP Images
Anopheles larva taken from an aquarium in Assis Brasil Village, Cruzeiro do Sul (Acre) Anopheles taken from an aquarium in the village of Assis Brasil , in Cruzeiro do Sul (Acre) – Photo: Cecília Bastos / USP Images
Larva of Anopheles ] Jars with larvae of Anopheles collected in fish tanks at Vila Assis Brasil, in Cruzeiro do Sul (Acre). The material is sent to the Institute of Biomedical Sciences for molecular badysis and identification of the species – Photo: Cecília Bastos / USP Images
Biolarvicida Project Team with M. Elson (hat), one of the fish farmers of Vila Assis Brasil, in Cruzeiro do Sul (Acre) – Photo: Cecília Bastos / USP Images
M. Elson, one of the fish farmers of Vila Assis Brasil, in Cruzeiro do Sul (Acre), heads to one of the tanks to feed his fish farmer Photo: Cecília Bastos / USP Images
Elson, l & # 39, one of the farmers of Vila Assis Brasil, in Cruzeiro do Sul (Acre), feeding the fish from one of the tanks of his property – Photo: Cecília Bastos / USP Images
Fish pirarucu one tanks owned by Mr. Elson, one of the fishermen of Vila Assis Brasil, in Cruzeiro do Sul (Acre) – Photo: Cecilia Bastos / USP Images
Pablo Fontoura and Anderson Costa set up a trap to catch mosquitoes Anopheles Cecília Bastos / USP Images
Pablo Fontoura and Anderson Costa mount a trap to catch mosquitoes Anopheles in a house near an aquarium – Photo: Cecília Bastos / USP Images
Anopheles caught in traps placed near tanks of the psychoculture – Photo: Cecília Bastos / USP Images
Anopheles captured in the traps placed near the tanks of the psychoculture In the following September, the team begins to use the biolarvicidas to control the larvae of Anopheles – Photo: Cecília Bastos / USP Images
Pilot project
The pilot project was carried out in another town in the region, Rodrigues Alves, in 25 aquariums. The researchers tested the best biolarvicides for the intervention study and the results were positive. "Starting in September, we will treat the reservoirs in Vila Assis Brasil and badyze the impacts that this treatment will bring in the reduction of malaria and in the diagnosis of people. It will be two years of study, "he reports. This project is based on a similar initiative, developed in Tanzania, Africa, by researcher Marcia Castro of Harvard University and one of the participants.
of the thematic project. "In Tanzania, biolarvicides have been applied even in urban areas and have helped to reduce cases of the disease.The population has been trained and educated to apply the product to the water itself," commented Fontoura.
According to Professor Marcelo Urbano Ferreira, this region of the Juruá Valley, where Mâncio Lima and Cruzeiro do Sul are located, has suffered greatly from the municipalization of the malaria control service, which is under way [overthelastyears"Ilacesséd&"Thestate'smandatewastransferredtothemunicipalitiesbutitdidnotmeettheresourcesandinputs"hesays
According to the professor, municipalization hampers the logistics of input distribution, such as those used in laboratory diagnosis. "In Mâncio Lima, they received the vehicles to help fight the disease, but there is money for maintenance, gasoline, parts. And many employees, who were once from the state, started charging their salaries through the municipality, "he says. "
Fomento and his collaborators
In addition to the FAPESP, the project is funded by the National Council for Scientific and Technological Development (CNPq), the Ministry of Health of Brazil and the National Institute of allergies and infectious diseases of the National Institutes of Health (NIAID / NIH) in the United States
Paulo Rololla, Botucatu Institute of Biosciences of Paulista State University (Unesp), José Bento Pereira Lima and Simone Ladeia-Andrade , from the Oswaldo Cruz Institute (Fiocruz / RJ), João Marcelo P. Alves, BIC / USP, Carlos E. Cavasini, from the School of Medicine of São José do Rio Preto (Famerp), Marcia C Castro, School of Public Health, Harvard University, USA, and Gabriela Gomes, School of Tropical Medicine, Liverpool, England
See also:
Malaria is scared again in Brazil What the University has to do with this [1965] 9029] USP researches malaria where disease occurs most in Brazil
Accompany in the coming weeks the USP Journal's special report on research of the Institute of Biomedical Sciences in Acre ]
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