Genetic variability of a population of Aedes aegypti from Parana, Brazil, using the mitochondrial ND4 gene

To analyze the genetic variability of populations of Aedes aegypti, 156 samples were collected from 10 municipalities in the state of Parana, Brazil. A 311 base pairs (bp) region of the NADH dehydrogenase subunit 4 (ND4) mitochondrial gene was examined. An analysis of this fragment identified eight...

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Veröffentlicht in:Revista brasileira de entomologia 2012-04, Vol.56 (2), p.249-256
Hauptverfasser: Twerdochlib, AL, Bonna, ACD, Leite, S S, Chitolina, R F, Westphal, B, Navarro-Silva, MA
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container_title Revista brasileira de entomologia
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Bonna, ACD
Leite, S S
Chitolina, R F
Westphal, B
Navarro-Silva, MA
description To analyze the genetic variability of populations of Aedes aegypti, 156 samples were collected from 10 municipalities in the state of Parana, Brazil. A 311 base pairs (bp) region of the NADH dehydrogenase subunit 4 (ND4) mitochondrial gene was examined. An analysis of this fragment identified eight distinct haplotypes. The mean genetic diversity was high (h = 0.702; p = 0.01556). AMOVA analysis indicated that most of the variation (67%) occurred within populations and the F sub(ST) value (0.32996) was highly significant. F sub(ST) values were significant in most comparisons among cities. The isolation by distance was not significant (r = -0.1216 and p = 0.7550), indicating that genetic distance is not related to geographic distance. Neighbor-joining analysis showed two genetically distinct groups within Parana. The DNA polymorphism and AMOVA data indicate a decreased gene flow in populations from Parana, which can result in increased vectorial competence.Original Abstract: Para analisar a variabilidade genetica de populacoes de Aedes aegypti, 156 amostras foram coletadas em dez cidades do estado do Parana, Brasil. Foi examinada a dislribuicao dos 311 pares de base do gene que codifica a subunidade 4 da enzima NADH desidrogenase. Pela amplificacao e o sequenciamento deste fragmento foram identificados 8 haplotipos distintos. Os valores de diversidade genetica foram altos (h = 0.702; p = 0.01556). A analise de AMOVA indicou que a maior variacao ocorreu dentro das populacoes com um valor de FST de 0.32996 altamente significativo. Valores de FST foram significativos na maior das comparacoes entre as cidades. O isolamento por distancia nao foi significativo (r = -0.1216 e p = 0.755), indicando que a distancia genetica nao esta relacionada a distancia geografica. A analise de Neighbor-joining mostrou dois grupos geneticos distintos dentro do estado do Parana, grupo I e grupo II. O polimorfismo de DNA e os dados de AMOVA indicam decrescimo de fluxo genico no estado do Parana, o que pode resultar em aumento da competencia vetorial da populacao.
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A 311 base pairs (bp) region of the NADH dehydrogenase subunit 4 (ND4) mitochondrial gene was examined. An analysis of this fragment identified eight distinct haplotypes. The mean genetic diversity was high (h = 0.702; p = 0.01556). AMOVA analysis indicated that most of the variation (67%) occurred within populations and the F sub(ST) value (0.32996) was highly significant. F sub(ST) values were significant in most comparisons among cities. The isolation by distance was not significant (r = -0.1216 and p = 0.7550), indicating that genetic distance is not related to geographic distance. Neighbor-joining analysis showed two genetically distinct groups within Parana. The DNA polymorphism and AMOVA data indicate a decreased gene flow in populations from Parana, which can result in increased vectorial competence.Original Abstract: Para analisar a variabilidade genetica de populacoes de Aedes aegypti, 156 amostras foram coletadas em dez cidades do estado do Parana, Brasil. 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title Genetic variability of a population of Aedes aegypti from Parana, Brazil, using the mitochondrial ND4 gene
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