Malária no Maranhão: aspectos bioecológicos de espécies de Anopheles Meigen, 1818 e dinâmica de transmissão nos municípios de Buriticupu e São José de Ribamar.
Entomological studies were conducted, based on data from the municipalities of San Jose and Buriticupu Ribamar, in the state of Maranhão, in order to equate entomological parameters related to the dynamics of malaria transmission and control. Collections of mosquitoes were performed in intra, per...
| Autor principal: | Barros, Vera Lúcia Lopes |
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| Grau: | Tese |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/12308 http://lattes.cnpq.br/1707536612184874 |
| Resumo: |
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Entomological studies were conducted, based on data from the municipalities of San
Jose and Buriticupu Ribamar, in the state of Maranhão, in order to equate
entomological parameters related to the dynamics of malaria transmission and
control. Collections of mosquitoes were performed in intra, peri and extradomicílio
from 18h to 06h, in the period 2006 to 2011. Also conducted sampling of immature
forms and data were obtained on density of Anopheles species, diversity of
macrophytes and limnological data, with emphasis on physical and chemical aspects
of the water. The mosquitoes were analyzed for infection by the plasmodium and the
diagnosis of blood ingested. In the city of Buriticupu nine species were collected and
2,832 copies in total. Considering the most frequent species, Anopheles darlingi
accounted for 63.59% of the sample, 22.96% Anopheles albitarsis latus senso and
Anopheles oswaldoi 5.67%. When one considers the collections in intra, peri and
extradomicílio it appears that the three species showed very similar percentages in
all three environments, respectively, about 23%, 53% and 22%. In the coastal area of
San José de Ribamar were collected only 75 specimens of adults, and 35 specimens
of A. aquasalis 23 A. albitarsis latus,senso and 5 A. darlingi. Regarding immature,
Buriticupu 130 specimens were captured and A. darlingi accounted for 60% of
samples, and A. albitarsis latus senso 24.61%. In San José de Ribamar 62 larvae
were captured with 61.29% of A. aquasalis and 22.59% of A. albitarsis latus senso.
The data showed that dietary source A. darlingi and A. aquasalis had more relation
with the human host. The PCR data were positive for Plasmodium vivax and P.
falciparum, and were detected A. darlingi, A. albitarsis latus senso, A. oswaldoi and
A. nuneztovari infected species. The values of Minimum Rate of Infection of the four
species were 2.8, 2.2, 4.6 and 8.3, respectively. Considering the two localities
studied, A. darlingi, A. aquasalis, A. albitarsis latus senso and A. oswaldoi were
found predominantly in animal sheds and showed anthropophilic and zoophilic
behavior. These species showed among hosts eclectic behavior. The Anopheles
density on São Luis island was low, but the area is endemic for the disease and the
presence of A. darlingi in Guarapiranga was detected again after had been recorded
in 1940. In the characterization of breeding, as the associated vegetation, five genera
were detected in each municipality, only the genus Nymphaea common both sites. |