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Master's Dissertation
DOI
10.11606/D.42.2010.tde-17012011-140902
Document
Author
Full name
Paloma Oliveira Vidal
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Rocha, Lincoln Suesdek (President)
Ribolla, Paulo Eduardo Martins
Sallum, Maria Anice Mureb
Title in Portuguese
Estudo genético e morfológico de populações de Aedes aegypti (Culicidae) na área metropolitana de São Paulo - SP.
Keywords in Portuguese
Aedes aegypti
Culicidae
Evolução
Genética
Insetos vetores
Morfometrtia
Abstract in Portuguese
Estudos populacionais de Aedes aegypti são de grande importância para o desenvolvimento de estratégias de controle, mas infelizmente o Estado de São Paulo carece desse tipo de estudo. Devido a esse contexto, o objetivo do trabalho foi avaliar a variabilidade genética e fenotípica de 4 populações de Ae. aegypti na área metropolitana de São Paulo. As análises interpopulacionais de forma em ambos os sexos mostraram variabilidade morfológica alar que, no entanto não indica estruturação populacional. Não foi observada correlação entre valores de distância fenética alar e distância geográfica para machos (r =-0,03) e fêmeas (r=0,34). Estruturação populacional foi detectada (Fst global=0,062) e baixo fluxo gênico (Nm=0,47) foi presumido nas quatro localidades. Foi observada correlação entre as distâncias genética e geográfica (r=0,76). Os dois marcadores populacionais aqui empregados aparentemente têm graus de resolução distintos para eventos microevolutivos, tendo sido DNA microssatélite ligeiramente mais sensível para acusar estruturação populacional.
Title in English
Genetic and morphological study of Aedes aegypti (culicidae) population in São Paulo (SP) metropolitan area.
Keywords in English
Aedes aegypti
Culicidae
Evolution
Genetics
Morphometrics
Vectors insects
Abstract in English
Populational studies of Ae. aegypti are important to develop control strategies, but unfortunately the State of São Paulo lacks such studies. Despite this context, the objective of this work was to evaluate genetic and phenotypic variability of population samples of Ae. aegypti from four collecting sites in the metropolitan area of São Paulo city. The interpopulational analysis of shape for females and males showed morphological variability in wings, but did not indicate population structure. Pairwise fenetic distances among populations were not correlated to the geographic distances for males (r=-0.03) and females (r =0.34). Populational structure was detected (global Fst= 0.062) and low gene flow (Nm= 0.41) was presumed among four locations. Pairwise genetic distances among populations were correlated to the geographic distances (r = 0.76). The two populational markers used here apparently have different degrees of resolution for microevolutionary events, being that microsatellite DNA were slightly more sensitive in revealing populational structure.
 
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Publishing Date
2011-08-08
 
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