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Doctoral Thesis
DOI
https://doi.org/10.11606/T.6.2020.tde-30032020-125914
Document
Author
Full name
Rosa Maria Tubaki
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2000
Supervisor
Committee
Barata, José Maria Soares (President)
Mucci, José Luiz Negrão
Natal, Délsio
Oliveira, Ricardo Lourenço de
Quintanilha, Jose Alberto
Title in Portuguese
Risco de contato entre a população rural e a população anofelina em mata residual no Planalto Oeste do Estado de São Paulo
Keywords in Portuguese
Anopheles darlingi
Contato Homem-Vetor
Risco
SIG
Teoria de Dempster-Shafer
Abstract in Portuguese
Objetivo. Buscou-se descrever a abundância de anofelinos adultos em matas residuais e estimar o risco de contato entre homem e transmissor de malária Anopheles darlingi nestas áreas. Métodos. Foram descritas abundância e freqüência de anofelinos em três matas residuais, coletando-se com armadilha de Shannon. Pesquisaram-se criadouros das matas. Áreas de margens de ribeirão e afluentes foram consideradas potenciais criadouros. A mata da Fazenda Rancho Alegre e margens fluviais foram propostas como áreas de dispersão de An. darlingi. Utilizou-se de SIG para análise de dados da população vetora e população humana de área contígua à mata. Aplicou-se a teoria de Dempster-Shafer para avaliar áreas de probabilidade de contato homem-vetor. Resultados. Embora An. darlingi tenha sido pouco abundante, verificou-se a exposição dos moradores devido à atividade periódica, de repouso, locomoção e hábitos culturais. Obtiveram-se três imagens de linhas de evidência a partir de: sítios de oviposição, freqüência e distribuição de domicílios para compor a base de conhecimento. Conclusões. Matas com graus de alteração sugerem diferente diversidade em espécies anofelinas. A atividade de An. darlingi e An. albitarsis sugere serem espécies sinantrópicas enquanto An. triannulatus apresenta-se silvestre. Moradores de 10 domicílios sem forro no teto, cujos horários de deslocamento a pé ocorriam antes das 8 horas e após as 17 horas foram considerados em situação de risco. Considerou-se o domicílio 111 situado em área de maior risco por apresentar 20-30% de incerteza de informação de suporte à hipótese de contato.
Title in English
Risk of contact between human and vector populations in forested regions of western Sao Paulo State
Keywords in English
Anopheles darlingi
Dempster-Shafer Theory
GIS
Man-Vector Contact
Risk
Abstract in English
Objective. This investigation aimed at estimation of the abundance of adult anophelines in residual forests and the risk of man-anopheline contact in these areas. Methods. Abundance and frequency of mosquitoes collected by the Shannon trap in three forest patches, were described. The search for breeding sites included river banks. These areas were assumed to be dispersal sites of the vector species. Data conceming vectors and the human population settled in the margins of the forest were analyzed by using GIS. Man-vector contact hypothesis was evaluated by using the Dempster-Shafer theory. Results: An. darlingi was less abundant in the residual forests. Dwellers exposure to risk of contact with vectors was evaluated, according to their periods of activity, resting, means of transportation and cultural interests. Three images of lines of evidence were built to compose the base of knowledge. They were based on the basic probability assignment of the location of breeding sites, of the frequency and of the distribution of domiciles. Conclusions: The differences in disturbance of the humid forested regions seem to indicate a diversity of anopheline species. An. darlingi and An. albitarsis activity suggests their synantropic status while An. triannulatus remained sylvatic. Dwellers of 10 houses without ceiling, whose periods of locomotion occurred before 8 a.m. and after 5 p.m. were the most exposed to the risk of man-vector contact. Dweller of house 111 was considered at higher risk of contact with An. darlingi because it was located in the region of 0.2-0.3 of probability of uncertainty of contact.
 
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Publishing Date
2020-03-30
 
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