Orientador: Luciana Rossini Pinto / Coorientador: Marcos Guimarães de Andrade Landell / Banca: Ana Lilia Alzate Marin / Banca: Dilermando Perecin / Resumo: A cana-de-açúcar figura mundialmente como uma importante cultura econômica, com grande participação no suprimento da demanda global por energia e açúcar. Bancos ativos de germoplasma são repositórios in vivo de variabilidade genética para os programas de melhoramento, estando diretamente relacionados ao sucesso do programa. Para uma gestão adequada e eficiente do banco é necessário conhecer a magnitude e distribuição da variabilidade genética dentro e entre os grupos de acessos das respectivas espécies que o compõe bem como identificar os acessos duplicados ou erroneamente identificados. Marcadores moleculares microssatélites são adequados para tal finalidade. O presente trabalho teve como objetivo principal avaliar a estrutura genética de um grupo de 593 genótipos, constituído por germoplasma básico e melhorado, disponíveis no banco de germoplasma do Programa Cana - IAC. Além disso, a magnitude da diferenciação genética entre as principais cultivares brasileiras e o germoplasma básico de cana-de-açúcar também foi investigada. Para tanto, 12 pares de primers SSR de alto poder discriminatório foram utilizados. A análise da estrutura genética separou os genótipos em dois grupos principais, um constituído por germoplasma básico e o outro por genótipos melhorados. A partição da variabilidade genética mostrou que 14,44% (P<0,001) da variabilidade total detectada pelos marcadores encontra-se entre estes dois grupos. Resultados semelhantes foram observados entre as principais cultiv... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Sugarcane is a crop with worldwide economic importance due to its large participation in supplying the global demand for energy and sugar. Active germplasm banks are in vivo repositories of genetic variability for breeding programs, being directly related to their success. For its adequate management, a constant routine of surveillance and control over the accessions is required. Microsatellite (SSRs) molecular markers are suitable for this purpose. The present work aims to evaluate the genetic structure of a group of 593 individuals, composed by basic germplasm accessions and breeding genotypes, available within the germplasm bank of the Campinas Agronomic Institute (IAC) Sugarcane Genetic Breeding Program, based on these markers, with a focus on the comparison between the genetic diversity of Brazilian clones and cultivars (IAC, CTC, SP and RB) with accessions of diverse species, genera and exotic hybrids. In addition, the magnitude of the genetic differentiation between the main Brazilian cultivars and the basic sugarcane germplasm was also investigated. For this purpose, 12 pairs of SSR primers with high discriminatory power were used. The genetic variability present in the group is structured in a way where breeding materials differ from wild accessions, constituting two groups of individuals. Genetic variability among them is 14.44%, while 85.56% is present within them (P<0.001). Similar results were observed between the main Brazilian cultivars and the basic germplasm,... (Complete abstract click electronic access below) / Mestre

The maintenance of cooperation and altruism in the face of manipulation by exploitative cheaters that reap the benefits of cooperative acts without paying the associated costs is a conundrum in evolutionary biology. Cheaters should spread through a population causing it to crash, yet cooperation is common. There are many models and theories that attempt to explain this apparent contradiction. The social amoeba Dictyostelium discoideum, like many microbial species has been used as a model organism to test these theories and to begin to understand the genetic mechanisms behind social behaviours. The aim of this PhD project is to quantify the interactions that occur between naturally-occurring genotypes during social competition in order to identify the types of cheating behaviours and to understand the evolutionary consequences of such behaviours. I first demonstrate that there is a social hierarchy of genotypes and that cheaters can increase their own fitness by increasing their own spore allocation or decreasing their partner's allocation the precise nature of which is dependent upon unique interactions between each competing pair. I also show that the outcome of social competition is dependent upon the physical environment where it can be significantly reduced, or even avoided by segregation of genotypes during development. Finally, it is demonstrated in a collaborative project that much of the observed social behaviour can be explained in terms of the production of and response to developmental signals.

abstract: Childhood Apraxia of Speech (CAS) is a severe motor speech disorder that is difficult to diagnose as there is currently no gold-standard measurement to differentiate between CAS and other speech disorders. In the present study, we investigate underlying biomarkers associated with CAS in addition to enhanced phenotyping through behavioral testing. Cortical electrophysiological measures were utilized to investigate differences in neural activation in response to native and non-native vowel contrasts between children with CAS and typically developing peers. Genetic analysis included full exome sequencing of a child with CAS and his unaffected parents in order to uncover underlying genetic variation that may be causal to the child’s severely impaired speech and language. Enhanced phenotyping was completed through extensive behavioral testing, including speech, language, reading, spelling, phonological awareness, gross/fine motor, and oral and hand motor tasks. Results from cortical electrophysiological measures are consistent with previous evidence of a heightened neural response to non-native sounds in CAS, potentially indicating over specified phonological representations in this population. Results of exome sequencing suggest multiple genetic variations contributing to the severely affected phenotype in the child and provide further evidence of heterogeneous genomic pathways associated with CAS. Finally, results of behavioral testing demonstrate significant impairments evident across tasks in CAS, suggesting underlying sequential processing deficits in multiple domains. Overall, these results have the potential to delineate functional pathways from genetic variations to the brain to observable behavioral phenotypes and motivate the development of preventative and targeted treatment approaches. / Dissertation/Thesis / Doctoral Dissertation Speech and Hearing Science 2018

Today, the livestock sector accounts for 18 % of greenhouse gas emissions. To prevent negative environmental effects, dietary changes are required. Locally cultivated legumes with high protein content can be used in order to produce plant-based protein, which can replace animal-based protein. In Sweden, pea (Pisum sativum L.) has been cultivated for centuries and been a valuable protein source for both human consumption and animal feed. VicJ, a gene in pea, has previously been associated with variation in protein content. In the present study, a primarily Swedish material of 31 accessions from different improvement stages were analysed for differences in protein content. It was also tested if genetic variation of VicJ was associated with variation in protein content. The result showed no differences in protein content between various improvement stages, which indicated that selection on the trait has not occurred. No genetic variation associated with variation in protein content in VicJ was detected either. However a stop codon in VicJ, known to be associated with reduced protein content was missing in the material, suggesting that the accessions studied may be suitable for breeding to increase protein content in pea.

Made available in DSpace on 2016-06-02T19:31:53Z (GMT). No. of bitstreams: 1 3440.pdf: 2492071 bytes, checksum: b94aa5c86583789dfc913ab73dc5f1de (MD5) Previous issue date: 2011-02-14 / Universidade Federal de Sao Carlos / Studies of population structuring are important tools for the conservation of species and can assist in decisions for the creation, management and restructuring of conservation units. Recent researches conducted with freshwater migratory fish have demonstrated the organization of metapopulations in species of the genus Prochilodus and Brycon, suggesting that the tributaries where the individuals reproduce have a key role in this structuring. Furthermore, the homing behavior, characterized by the return of individuals to their birthplace to breed, has been reported for the genus Prochilodus. This behavior restricts gene flow, which can lead to population structuring. Moreover, a previous study in Prochilodus costatus was not able to detect population structuring when comparing three sites downstream the dam of Três Marias (MG). However, the idea that tributaries may contain different genetic populations remains to be tested. In this context, we investigated the population genetic structure of P. costatus in the region of the headwaters of the São Francisco river, where the extension of the protected area Parque Nacional da Serra da Canastra is discussed. We used ten microsatellite loci to conduct the studies in three tributaries of the Upper São Francisco. We use the fixation index (FST) and AMOVA to verify the genetic differentiation between subpopulations previously defined and assignment tests to see how many people there. The results showed a high diversity within subpopulations, low diversity among subpopulations and the existence of only one population group. Thus, the conservation policies for this species should consider a high variability in a single and large population model. / Estudos de estruturação populacional são ferramentas importantes para a conservação de espécies e podem auxiliar nas decisões para criação, manejo e reestruturação de unidades de conservação. Pesquisas realizadas com peixes migradores de água doce já constataram a organização de metapopulações em espécies dos gêneros Prochilodus e Brycon, sugerindo que os tributários onde ocorre a reprodução dos indivíduos podem ter um papel fundamental nessa estruturação. Além disso, o comportamento de homing, que se caracteriza pelo retorno dos indivíduos ao lugar onde nasceram para se reproduzir, já foi relatado para o gênero Prochilodus. Esse comportamento promove uma restrição no fluxo gênico, que pode acarretar em estruturação populacional. Por outro lado, um estudo prévio em Prochilodus costatus não foi capaz de detectar estruturação populacional, quando foram comparadas três localidades a jusante à barragem de Três Marias (MG). Entretanto, a ideia de que tributários podem conter populações genéticas diferenciadas ainda precisa ser testada. Nesse contexto, investigamos a estrutura genética populacional de P. costatus na região das nascentes do rio São Francisco, onde atualmente se discute a ampliação do Parque Nacional da Serra da Canastra. Utilizamos dez locos microssatélites para realizar os estudos em três tributários do Alto São Francisco. Utilizamos o índice de fixação (FST) e AMOVA para verificar a diferenciação genética entre as subpopulações previamente definidas e testes de atribuição para verificar quantas populações existem. Os resultados obtidos evidenciaram uma alta diversidade intrapopulacional, baixa diversidade entre as subpopulações e a existência de apenas um grupo populacional. Dessa forma, as medidas conservacionistas para essa espécie devem considerar uma alta variabilidade em um modelo de população não estruturada.

Made available in DSpace on 2016-07-01T13:10:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-04-06. Added 1 bitstream(s) on 2016-07-01T13:14:07Z : No. of bitstreams: 1 000866061.pdf: 3092347 bytes, checksum: 231b0807cdca7c581bae7f18a5b3c6ac (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Dengue é a arbovirose de maior crescimento nos últimos anos, repercutindo em impactos sociais e econômicos devido às altas taxas de morbidade e mortalidade desencadeadas pela infecção. O dengue tem como principal vetor o mosquito Aedes aegypti, distribuído em toda a faixa tropical e subtropical do planeta. Por apresentar hábito hematofágico antropofílico, rápido desenvolvimento e características comportamentais específicas, é um excelente transmissor do vírus dengue. Medidas de controle estão restritas à eliminação do mosquito vetor, uma vez que um tratamento específico ou uma vacina que previna simultaneamente a infecção pelos quatro sorotipos deste arbovírus ainda não estão disponíveis à população. Uma característica que determina a disseminação de doenças é a alta competência vetorial de seus mosquitos transmissores, que tem sido associada à fatores genéticos do mosquito bem como à microbiota intestinal do inseto. O presente estudo avaliou fatores genéticos e microbianos relacionados à competência vetorial de populações naturais de Ae. aegypti com diferenças na susceptibilidades ao vírus dengue sorotipo 4 (DENV-4). Para isso, foi avaliada a susceptibilidade à infecção pelo DENV de duas populações naturais deste inseto (Botucatu-SP e Neópolis-SE) através de ensaios de infecção e quantificação relativa por PCR em tempo real. A expressão gênica diferencial, bem como a diversidade microbiana intestinal, foi realizada através do sequenciamento de nova geração (RNA-seq e sequenciamento do gene 16S rRNA) através das plataformas Illumina HiScan™SQ e MiSeq, respectivamente. Verificamos que as populações estudadas apresentam diferenças na susceptibilidades ao DENV-4 onde Botucatu apresentou maior resistência à infecção quando comparada à Neópolis. Pela análise de expressão gênica diferencial verificamos que houve pouca modulação genica na população de Botucatu em resposta a... / Dengue is the arbovirosis of greater growth in recent years, reflecting on social and economic impacts due to the high morbidity and mortality rates triggered by infection. Dengue has Aedes aegypti as its primary vector, which is distributed throughout tropical and subtropical regions of the planet. Due to its anthropophilic and haematophagic habit, rapid development and specific behavioral characteristics, it is an excellent dengue virus transmitter. Control measurements are restricted to eliminating the mosquito vector since neither specific treatments nor tetravalent vaccines are yet commercially available. One feature that determines the spread of the disease is the high vector competence of its vector mosquitoes, which has been associated to its genetic factors and to its gut microbiota. The present study evaluated genetic and microbial factors related to vector competence of natural populations of Ae. Aegypti with different levels of susceptibilities to dengue virus serotype 4 (DENV-4). For that, we evaluated the susceptibility to DENV-4 infection of two field collected mosquito populations (Botucatu-SP and Neópolis-SE) through infection assays and relative quantification by qPCR. Differential gene expression and gut microbial diversity analyses were performed using next-generation sequencing (RNA-seq and 16S rRNA gene sequencing) through Illumina HiScanSQ and MiSeq platforms, respectively. The populations presented different susceptibility to DENV-4, of which Botucatu showed higher resistance to infection when compared to Neópolis. Differential gene expression analysis revealed that there was little gene modulation in response to DENV infection in Botucatu, while Neópolis showed consistent modulation on several genes related to immune pathways or digestive processes. When comparing to other studies we found that the Toll immune pathway is being activated in this population after infection. However, the comparison of ...

Aedes aegypti is an important vector of human arboviruses as dengue, yellow fever and chikungunya in several tropical and subtropical countries. Studies of population genetic on Ae. aegypti has been growing in recent years and several molecular markers has been used to assess genetic variability of this vector. Among the molecular markers used is the ISSR (Inter-Simple Sequence Repeat) based on the use of nonspecific primers as microsatellites, and SNP (Single Nucleotide Polymorphism) that detect single base mutations in the chain of nitrogenous bases. The aim of this study was to determine the genetic variability in Ae. aegyti populations in the State of Sergipe through the molecular markers ISSR and SNP. Mosquito samples were caught using ovitraps in seven cities of Sergipe State: Canindé de São Francisco, Carira, Pinhão, Neópolis, Maruim, Aracaju and Umbaúba. DNA from adult mosquitoes was extracted and amplified with two ISSR primers and nine SNP markers. For ISSR marker analysis AMOVA resulted in 32% of genetic variation among populations and 68% within the population. The value of phiST was equal to 0.3225 indicating high genetic structure among populations. The dendrogram generated by UPGMA grouped the populations into two clusters that showed 61% similarity. The Mantel test by means of partial correlation between genetic distances and road excluding the interference of population size of the city was significant (r = -0.5399, p = 0.0359), assuming the occurrence of gene flow between Ae. aegypti populations passively by human action. For the marker SNP AMOVA analysis revealed genetic differentiation of FST = 0.07354 (p <0.01) and genetic diversity of 7.35% among populations. The analysis, showed the existence of two clusters based on genotypic similarities. For this analysis we found genetic differentiation between populations located in the countryside and on the coast. Both markers were efficient for the genetic study of natural populations of Ae. aegypti and able to differentiate among samples on a geographic scale from 30km to 240km. / Aedes aegypti é um importante vetor de graves arboviroses humanas como dengue, febre amarela e chikungunya em diversos países tropicais e subtropicais. O número de estudos envolvendo genética de população com Ae. aegypti vem crescendo nos últimos anos, sendo utilizados diversos marcadores moleculares para avaliar a variabilidade genética deste vetor. Entre os marcadores utilizados estão os ISSR (Inter-Simple Sequence Repeat) baseados na utilização de microssatélites como primers inespecíficos, e SNP (Single Nucleotide Polymorphism) que detectam mutações em bases únicas da cadeia de bases nitrogenadas. O objetivo do estudo foi determinar a variabilidade genética de populações de Ae. aegyti do estado de Sergipe por meio dos marcadores moleculares ISSR e SNP. Foram capturadas amostras do mosquito por meio de armadilhas ovitrampas de sete municípios sergipanos: Canindé de São Francisco, Carira, Pinhão, Neópolis, Maruim, Aracaju e Umbaúba. Para avaliação do polimorfismo genético foi extraído o DNA do mosquito adulto e amplificado com dois primers para ISSR e nove marcadores de SNP. Para o marcador ISSR a análise AMOVA resultou em 32% de variação genética entre as populações e 68% dentro das populações. O valor de phiST foi igual a 0,3225 indicando alta estruturação genética entre as populações. O dendograma gerado pelo método UPGMA agrupou as populações em dois clusters que apresentaram 61% de similaridade. O teste de Mantel por meio de correlação parcial entre as distâncias genética e rodoviária excluindo a interferência do tamanho da cidade foi significativo (r = - 0,5399 e p = 0,0359), supondo a ocorrência de fluxo gênico entre as populações de Ae. aegypti de forma passiva pela ação humana. Para o marcador SNP a análise AMOVA revelou diferenciação genética entre as populações de FST = 0,07354 (p < 0,01) e diversidade genética entre as populações de 7,35%. A análise por meio do software Structure 2.3.1, evidenciou a existência de dois clusters baseados em semelhanças genotípicas. Por essa análise foi observada uma diferenciação genética entre populações localizadas no interior do estado e populações mais próximas do litoral. Ambos marcadores moleculares foram eficientes no estudo genético de populações naturais de Ae. aegypti, sendo possível diferenciar amostras numa escala geográfica entre 30km a 240km.

Orientador: Jayme Augusto de Souza Neto / Coorientador: Paulo Eduardo Martins Ribolla / Banca: Luciano Andrade Moreira / Banca: João Trindade Marques / Banca: Ana Cristina Bahia Nascimento / Banca: Robson Francisco Carvalho / Resumo: Dengue é a arbovirose de maior crescimento nos últimos anos, repercutindo em impactos sociais e econômicos devido às altas taxas de morbidade e mortalidade desencadeadas pela infecção. O dengue tem como principal vetor o mosquito Aedes aegypti, distribuído em toda a faixa tropical e subtropical do planeta. Por apresentar hábito hematofágico antropofílico, rápido desenvolvimento e características comportamentais específicas, é um excelente transmissor do vírus dengue. Medidas de controle estão restritas à eliminação do mosquito vetor, uma vez que um tratamento específico ou uma vacina que previna simultaneamente a infecção pelos quatro sorotipos deste arbovírus ainda não estão disponíveis à população. Uma característica que determina a disseminação de doenças é a alta competência vetorial de seus mosquitos transmissores, que tem sido associada à fatores genéticos do mosquito bem como à microbiota intestinal do inseto. O presente estudo avaliou fatores genéticos e microbianos relacionados à competência vetorial de populações naturais de Ae. aegypti com diferenças na susceptibilidades ao vírus dengue sorotipo 4 (DENV-4). Para isso, foi avaliada a susceptibilidade à infecção pelo DENV de duas populações naturais deste inseto (Botucatu-SP e Neópolis-SE) através de ensaios de infecção e quantificação relativa por PCR em tempo real. A expressão gênica diferencial, bem como a diversidade microbiana intestinal, foi realizada através do sequenciamento de nova geração (RNA-seq e sequenciamento do gene 16S rRNA) através das plataformas Illumina HiScan™SQ e MiSeq, respectivamente. Verificamos que as populações estudadas apresentam diferenças na susceptibilidades ao DENV-4 onde Botucatu apresentou maior resistência à infecção quando comparada à Neópolis. Pela análise de expressão gênica diferencial verificamos que houve pouca modulação genica na população de Botucatu em resposta a... / Abstract: Dengue is the arbovirosis of greater growth in recent years, reflecting on social and economic impacts due to the high morbidity and mortality rates triggered by infection. Dengue has Aedes aegypti as its primary vector, which is distributed throughout tropical and subtropical regions of the planet. Due to its anthropophilic and haematophagic habit, rapid development and specific behavioral characteristics, it is an excellent dengue virus transmitter. Control measurements are restricted to eliminating the mosquito vector since neither specific treatments nor tetravalent vaccines are yet commercially available. One feature that determines the spread of the disease is the high vector competence of its vector mosquitoes, which has been associated to its genetic factors and to its gut microbiota. The present study evaluated genetic and microbial factors related to vector competence of natural populations of Ae. Aegypti with different levels of susceptibilities to dengue virus serotype 4 (DENV-4). For that, we evaluated the susceptibility to DENV-4 infection of two field collected mosquito populations (Botucatu-SP and Neópolis-SE) through infection assays and relative quantification by qPCR. Differential gene expression and gut microbial diversity analyses were performed using next-generation sequencing (RNA-seq and 16S rRNA gene sequencing) through Illumina HiScanSQ and MiSeq platforms, respectively. The populations presented different susceptibility to DENV-4, of which Botucatu showed higher resistance to infection when compared to Neópolis. Differential gene expression analysis revealed that there was little gene modulation in response to DENV infection in Botucatu, while Neópolis showed consistent modulation on several genes related to immune pathways or digestive processes. When comparing to other studies we found that the Toll immune pathway is being activated in this population after infection. However, the comparison of ... / Doutor

abstract: The Cape Floral Region (CFR) in southwestern South Africa is one of the most diverse in the world, with >9,000 plant species, 70% of which are endemic, in an area of only ~90,000 km2. Many have suggested that the CFR's heterogeneous environment, with respect to landscape gradients, vegetation, rainfall, elevation, and soil fertility, is responsible for the origin and maintenance of this biodiversity. While studies have struggled to link species diversity with these features, no study has attempted to associate patterns of gene flow with environmental data to determine how CFR biodiversity evolves on different scales. Here, a molecular population genetic data is presented for a widespread CFR plant, Leucadendron salignum, across 51 locations with 5-kb of chloroplast (cpDNA) and 6-kb of unlinked nuclear (nuDNA) DNA sequences in a dataset of 305 individuals. In the cpDNA dataset, significant genetic structure was found to vary on temporal and spatial scales, separating Western and Eastern Capes - the latter of which appears to be recently derived from the former - with the highest diversity in the heart of the CFR in a central region. A second study applied a statistical model using vegetation and soil composition and found fine-scale genetic divergence is better explained by this landscape resistance model than a geographic distance model. Finally, a third analysis contrasted cpDNA and nuDNA datasets, and revealed very little geographic structure in the latter, suggesting that seed and pollen dispersal can have different evolutionary genetic histories of gene flow on even small CFR scales. These three studies together caution that different genomic markers need to be considered when modeling the geographic and temporal origin of CFR groups. From a greater perspective, the results here are consistent with the hypothesis that landscape heterogeneity is one driving influence in limiting gene flow across the CFR that can lead to species diversity on fine-scales. Nonetheless, while this pattern may be true of the widespread L. salignum, the extension of this approach is now warranted for other CFR species with varying ranges and dispersal mechanisms to determine how universal these patterns of landscape genetic diversity are. / Dissertation/Thesis / Ph.D. Biology 2013

Aedes aegypti is an important vector of human arboviruses as dengue, yellow fever and chikungunya in several tropical and subtropical countries. Studies of population genetic on Ae. aegypti has been growing in recent years and several molecular markers has been used to assess genetic variability of this vector. Among the molecular markers used is the ISSR (Inter-Simple Sequence Repeat) based on the use of nonspecific primers as microsatellites, and SNP (Single Nucleotide Polymorphism) that detect single base mutations in the chain of nitrogenous bases. The aim of this study was to determine the genetic variability in Ae. aegyti populations in the State of Sergipe through the molecular markers ISSR and SNP. Mosquito samples were caught using ovitraps in seven cities of Sergipe State: Canindé de São Francisco, Carira, Pinhão, Neópolis, Maruim, Aracaju and Umbaúba. DNA from adult mosquitoes was extracted and amplified with two ISSR primers and nine SNP markers. For ISSR marker analysis AMOVA resulted in 32% of genetic variation among populations and 68% within the population. The value of phiST was equal to 0.3225 indicating high genetic structure among populations. The dendrogram generated by UPGMA grouped the populations into two clusters that showed 61% similarity. The Mantel test by means of partial correlation between genetic distances and road excluding the interference of population size of the city was significant (r = -0.5399, p = 0.0359), assuming the occurrence of gene flow between Ae. aegypti populations passively by human action. For the marker SNP AMOVA analysis revealed genetic differentiation of FST = 0.07354 (p <0.01) and genetic diversity of 7.35% among populations. The analysis, showed the existence of two clusters based on genotypic similarities. For this analysis we found genetic differentiation between populations located in the countryside and on the coast. Both markers were efficient for the genetic study of natural populations of Ae. aegypti and able to differentiate among samples on a geographic scale from 30km to 240km. / Aedes aegypti é um importante vetor de graves arboviroses humanas como dengue, febre amarela e chikungunya em diversos países tropicais e subtropicais. O número de estudos envolvendo genética de população com Ae. aegypti vem crescendo nos últimos anos, sendo utilizados diversos marcadores moleculares para avaliar a variabilidade genética deste vetor. Entre os marcadores utilizados estão os ISSR (Inter-Simple Sequence Repeat) baseados na utilização de microssatélites como primers inespecíficos, e SNP (Single Nucleotide Polymorphism) que detectam mutações em bases únicas da cadeia de bases nitrogenadas. O objetivo do estudo foi determinar a variabilidade genética de populações de Ae. aegyti do estado de Sergipe por meio dos marcadores moleculares ISSR e SNP. Foram capturadas amostras do mosquito por meio de armadilhas ovitrampas de sete municípios sergipanos: Canindé de São Francisco, Carira, Pinhão, Neópolis, Maruim, Aracaju e Umbaúba. Para avaliação do polimorfismo genético foi extraído o DNA do mosquito adulto e amplificado com dois primers para ISSR e nove marcadores de SNP. Para o marcador ISSR a análise AMOVA resultou em 32% de variação genética entre as populações e 68% dentro das populações. O valor de phiST foi igual a 0,3225 indicando alta estruturação genética entre as populações. O dendograma gerado pelo método UPGMA agrupou as populações em dois clusters que apresentaram 61% de similaridade. O teste de Mantel por meio de correlação parcial entre as distâncias genética e rodoviária excluindo a interferência do tamanho da cidade foi significativo (r = - 0,5399 e p = 0,0359), supondo a ocorrência de fluxo gênico entre as populações de Ae. aegypti de forma passiva pela ação humana. Para o marcador SNP a análise AMOVA revelou diferenciação genética entre as populações de FST = 0,07354 (p < 0,01) e diversidade genética entre as populações de 7,35%. A análise por meio do software Structure 2.3.1, evidenciou a existência de dois clusters baseados em semelhanças genotípicas. Por essa análise foi observada uma diferenciação genética entre populações localizadas no interior do estado e populações mais próximas do litoral. Ambos marcadores moleculares foram eficientes no estudo genético de populações naturais de Ae. aegypti, sendo possível diferenciar amostras numa escala geográfica entre 30km a 240km.