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Id: biblio-914181
Autor: Casadei, Danilo; Duarte, Lourdes; Robledo, Rocio(coord).
Título: Recolección y recopilación de información sobre la salud en la vivienda saludable de Paraguay / Collection and collection of information on health in healthy housing in Paraguay.
Fonte: Asunción; Centro de Publicaciones de la Universidad Católica (CEPUC); s.f. f:2 i:98 p. graf., tab.
Idioma: es.
Resumo: El presente informe tiene como objetivo presentar un diagnóstico sobre la situación de la salud y la vivienda en el Paraguay. El informe fue realizado en un tiempo breve y su alcance es de diagnóstico preliminar, más que sobre la situación de la salud en la vivienda, de los datos disponibles sobre el tema.
Descritores: Infraestrutura Sanitária/tendências
Pessoas em Situação de Rua/estatística & dados numéricos
Densidade Demográfica
Habitação/estatística & dados numéricos
Limites: Seres Humanos
Responsável: PY56.1 - Biblioteca Pablo VI


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Id: lil-445786
Autor: Bollmann, Harry Alberto; Marques, David M. L. da Motta.
Título: Influência da densidade populacional nas relações entre matéria orgânica carbonácea, nitrogênio e fósforo em rios urbanos situados em áreas com baixa cobertura sanitária / Influence of the urban density in the relationship among carbonic organic matter, nitrogen and phosphorous in small rivers with low sanitation coverage
Fonte: Eng. sanit. ambient;11(4):343-352, out.-dez. 2006. graf, ilus, tab.
Idioma: pt.
Projeto: CNPq", "_d": "MCT. PRONEX.
Resumo: O objetivo principal deste trabalho é a análise da variação da relação entre a matéria orgânica carbonácea (representada pelas Demandas Biológica e Bioquímica de Oxigênio), Nitrogênio Total Kjeldhal e Fósforo Total nas águas de pequenos rios urbanos cujas áreas de drenagem apresentem baixa cobertura sanitária. Para isso, foram selecionadas 4 bacias hidrográficas urbanas com ocupação residencial, densidade populacional entre 0 e 100 hab/ha e similaridade de condições naturais e de ocupação humana. Os resultados mostraram alterações importantes nas relações entre os conteúdos de matéria orgânica carbonácea, Nitrogênio e Fósforo indicando que, a partir de uma condição natural não urbanizada, mesmo pequenas densidades populacionais são capazes de alterar significativamente a qualidade das águas.

The purpose of this study is to evaluate the relationship among the carbonic organic matter (measured as Chemical and Biological Oxygen Demand), Total Kjeldhal Nitrogen and Total Phosphorous in small urban rivers with low sanitation coverage in its hydrographic basins. Four basins with similar natural condition and residential occupation but variable urban densities between 0 and 100 inhabitants per hectare were selected. The results show important changes in the carbonic organic matter, Nitrogen and Phosphorous relationships indicating that, compared with a natural condition, even low urban densities can significantly change de water quality.
Descritores: Densidade Demográfica
Escoamento de Água de Chuva
Esgotos Domésticos
Poluição da Água
Poluição de Rios
Área Urbana
Responsável: BR559.1 - Centro de Informação e Documentação em Saúde


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Id: biblio-894892
Autor: Buery, Julyana Cerqueira; Rezende, Helder Ricas; Natal, Licia; Silva, Leonardo Santana da; Menezes, Regiane Maria Tironi de; Fux, Blima; Malafronte, Rosely dos Santos; Falqueto, Aloisio; Cerutti Junior, Crispim.
Título: Ecological characterisation and infection of Anophelines (Diptera: Culicidae) of the Atlantic Forest in the southeast of Brazil over a 10 year period: has the behaviour of the autochthonous malaria vector changed?
Fonte: Mem. Inst. Oswaldo Cruz;113(2):111-118, Feb. 2018. tab, graf.
Idioma: en.
Projeto: FAPES.
Resumo: BACKGROUND In southeastern Brazil, autochthonous cases of malaria can be found near Atlantic Forest fragments. Because the transmission cycle has not been completely clarified, the behaviour of the possible vectors in those regions must be observed. A study concerning the entomological aspects and natural infection of anophelines (Diptera: Culicidae) captured in the municipalities of the mountainous region of Espírito Santo state was performed in 2004 and 2005. Similarly, between 2014 and 2015, 12 monthly collections were performed at the same area of the study mentioned above. METHODS Center for Disease Control (CDC) light traps with CO2 were set in open areas, at the edge and inside of the forest (canopy and ground), whereas Shannon traps were set on the edge. FINDINGS A total of 1,414 anophelines were collected from 13 species. Anopheles (Kerteszia) cruzii Dyar and Knab remained the most frequently captured species in the CDC traps set in the forest canopy, as well as being the vector with the highest prevalence of Plasmodium vivax/simium infection, according to molecular polymerase chain reaction techniques. CONCLUSIONS P. vivax/simium was found only in abdomens of the mosquitoes of the subgenus Nyssorhynchus, weakening the hypothesis that this subgenus also plays a role in malaria transmission in this specific region.
Descritores: Mosquitos Vetores/parasitologia
Malária/transmissão
Anopheles/classificação
Anopheles/parasitologia
-Brasil
Florestas
Densidade Demográfica
Malária
Responsável: BR1.1 - BIREME


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Id: biblio-894845
Autor: Vianna, Elisa Neves; Souza e Guimarães, Ricardo José de Paula; Souza, Christian Rezende; Gorla, David; Diotaiuti, Liléia.
Título: Chagas disease ecoepidemiology and environmental changes in northern Minas Gerais state, Brazil
Fonte: Mem. Inst. Oswaldo Cruz;112(11):760-768, Nov. 2017. tab, graf.
Idioma: en.
Projeto: CNPQ; . WHO/TDR-World Health Organization.
Resumo: BACKGROUND Triatoma sordida and Triatoma pseudomaculata are frequently captured triatomine species in the Brazilian savannah and caatinga biomes, respectively, and in Brazilian domiciles. OBJECTIVES This study identified eco-epidemiological changes in Chagas disease in northern Minas Gerais state, Brazil, and considered the influence of environmental shifts and both natural and anthropogenic effects. METHODS Domicile infestation and Trypanosoma cruzi infection rates were obtained from triatomines and sylvatic reservoirs during the following two time periods: the 1980s and 2007/2008. Entomological and climatic data with land cover classification derived from satellite imagery were integrated into a geographic information system (GIS), which was applied for atmospheric correction, segmentation, image classification, and mapping and to analyse data obtained in the field. Climatic data were analysed and compared to land cover classifications. RESULTS A comparison of current data with data obtained in the 1980's showed that T. sordida colonised domiciliary areas in both periods, and that T. pseudomaculata did not colonise these areas. There was a tendency toward a reduction in T. cruzi infection rates in sylvatic reservoirs, and of triatomines captured in both households and in the sylvatic environment. T. sordida populations have reduced in the sylvatic environment, while T. pseudomaculata showed an expanding trend in the region compared to counts observed in the 1980's in the sylvatic environment. This may be related to high deforestation rates as well as gradual increases in land surface temperature (LST) and temperatures along the years. MAIN CONCLUSIONS Our results suggest a geographical expansion of species into new biomes as a result of anthropogenic and climatic changes that directly interfere with the reproductive and infection processes of vectors.
Descritores: Triatominae/classificação
Densidade Demográfica
Doença de Chagas/transmissão
Doença de Chagas/epidemiologia
Insetos Vetores/classificação
-Brasil/epidemiologia
Ecossistema
Monitoramento Epidemiológico
Análise Espacial
Habitação
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-894840
Autor: Carbajal-de-la-Fuente, Ana Laura; Provecho, Yael Mariana; Fernández, María del Pilar; Cardinal, Marta Victoria; Lencina, Patricia; Spillmann, Cynthia; Gürtler, Ricardo Esteban.
Título: The eco-epidemiology of Triatoma infestans in the temperate Monte Desert ecoregion of mid-western Argentina
Fonte: Mem. Inst. Oswaldo Cruz;112(10):698-708, Oct. 2017. tab, graf.
Idioma: en.
Projeto: Argentina's National Promotion Agency for Science and Technology; . Argentina's National Promotion Agency for Science and Technology.
Resumo: BACKGROUND The eco-epidemiological status of Chagas disease in the Monte Desert ecoregion of western Argentina is largely unknown. We investigated the environmental and socio-demographic determinants of house infestation with Triatoma infestans, bug abundance, vector infection with Trypanosoma cruzi and host-feeding sources in a well-defined rural area of Lavalle Department in the Mendoza province. METHODS Technical personnel inspected 198 houses for evidence of infestation with T. infestans, and the 76 houses included in the current study were re-inspected. In parallel with the vector survey, an environmental and socio-demographic survey was also conducted. Univariate risk factor analysis for domiciliary infestation was carried out using Firth penalised logistic regression. We fitted generalised linear models for house infestation and bug abundance. Blood meals were tested with a direct ELISA assay, and T. cruzi infection was determined using a hot-start polymerase chain reaction (PCR) targeting the kinetoplast minicircle (kDNA-PCR). FINDINGS The households studied included an aged population living in precarious houses whose main economic activities included goat husbandry. T. infestans was found in 21.2% of 198 houses and in 55.3% of the 76 re-inspected houses. Peridomestic habitats exhibited higher infestation rates and bug abundances than did domiciles, and goat corrals showed high levels of infestation. The main host-feeding sources were goats. Vector infection was present in 10.2% of domiciles and 3.2% of peridomiciles. Generalised linear models showed that peridomestic infestation was positively and significantly associated with the presence of mud walls and the abundance of chickens and goats, and bug abundance increased with the number of all hosts except rabbits. MAIN CONCLUSIONS We highlight the relative importance of specific peridomestic structures (i.e., goat corrals and chicken coops) associated with construction materials and host abundance as sources of persistent bug infestation driving domestic colonisation. Environmental management strategies framed in a community-based programme combined with improved insecticide spraying and sustained vector surveillance are needed to effectively suppress local T. infestans populations.
Descritores: Triatoma/fisiologia
Triatoma/parasitologia
Trypanosoma cruzi/isolamento & purificação
Doença de Chagas/transmissão
Comportamento Alimentar/fisiologia
Insetos Vetores/fisiologia
Insetos Vetores/parasitologia
-Argentina
População Rural
Fatores Socioeconômicos
Cabras
Gatos
Galinhas
Fatores de Risco
Densidade Demográfica
Cães
Limites: Seres Humanos
Masculino
Feminino
Adulto
Meia-Idade
Responsável: BR1.1 - BIREME


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Id: biblio-894836
Autor: Berrozpe, Pablo; Lamattina, Daniela; Santini, María Soledad; Araujo, Analía Vanesa; Utgés, María Eugenia; Salomón, Oscar Daniel.
Título: Environmental suitability for Lutzomyia longipalpis in a subtropical city with a recently established visceral leishmaniasis transmission cycle, Argentina
Fonte: Mem. Inst. Oswaldo Cruz;112(10):674-680, Oct. 2017. tab, graf.
Idioma: en.
Projeto: Ministerio Nacional de Ciencia, Tecnología y Innovación Productiva.
Resumo: BACKGROUND Visceral leishmaniasis (VL) is an endemic disease in northeastern Argentina including the Corrientes province, where the presence of the vector and canine cases of VL were recently confirmed in December 2008. OBJECTIVES The objective of this study was to assess the modelling of micro- and macro-habitat variables to evaluate the urban environmental suitability for the spatial distribution of Lutzomyia longipalpis presence and abundance in an urban scenario. METHODS Sampling of 45 sites distributed throughout Corrientes city (Argentina) was carried out using REDILA-BL minilight traps in December 2013. The sampled specimens were identified according to methods described by Galati (2003). The analysis of variables derived from the processing of satellite images (macro-habitat variables) and from the entomological sampling and surveys (micro-habitat variables) was performed using the statistical software R. Three generalised linear models were constructed composed of micro- and macro-habitat variables to explain the spatial distribution of the abundance of Lu. longipalpis and one composed of micro-habitat variables to explain the occurrence of the vector. FINDINGS A total of 609 phlebotominae belonging to five species were collected, of which 56% were Lu. longipalpis. In addition, the presence of Nyssomyia neivai and Migonemya migonei, which are vectors of tegumentary leishmaniasis, were also documented and represented 34.81% and 6.74% of the collections, respectively. The explanatory variable normalised difference vegetation index (NDVI) described the abundance distribution, whereas the presence of farmyard animals was important for explaining both the abundance and the occurrence of the vector. MAIN CONCLUSIONS The results contribute to the identification of variables that can be used to establish priority areas for entomological surveillance and provide an efficient transfer tool for the control and prevention of vector-borne diseases.
Descritores: Psychodidae/classificação
Densidade Demográfica
Ecossistema
Insetos Vetores/classificação
Leishmaniose Visceral/transmissão
-Argentina
População Urbana
Análise Espacial
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-841751
Autor: Pardo, Raúl Hernando; Santamaría, Erika; Cabrera, Olga Lucia.
Título: Entering and exiting behaviour of the phlebotomine sand fly Lutzomyia longiflocosa (Diptera: Psychodidae) in rural houses of the sub-Andean region of Colombia
Fonte: Mem. Inst. Oswaldo Cruz;112(1):19-30, Jan. 2017. tab, graf.
Idioma: en.
Projeto: Universidad de La Salle and Colciencias.
Resumo: The present study identified the entering and exiting sites for Lutzomyia longiflocosa in rural houses of the sub-Andean region in Colombia. Entering sites were identified with sticky traps set up outside the bedrooms, around the eave openings, and with cage traps enclosing the slits in the doors and windows inside the bedrooms. Exiting sites were identified by releasing groups of females indoors. These females were blood fed and marked with fluorescent powders. Females were recaptured with the trap placement described above but set up on the opposite sides of the openings. In the entering experiment, a significantly higher number of females were captured in the sticky traps at the zone nearest the eave openings (n = 142) than those captured in the other zones of the trap (n = 52); similarly, a higher number of females were captured on the front side of the house (n = 105) than at the rear side (n = 37). Only two females were collected in the cage trap. In the exiting experiment, at the ceiling, the highest percentage (86.2%) of females was recaptured with sticky traps nearest the eave openings and on the front side of the house (70.0%). Seven females were collected in the cage trap. Lu. longiflocosa entered and exited houses primarily through the eave openings in a non-random pattern in relation to the sides of the house.
Descritores: Psychodidae/classificação
Leishmaniose Cutânea/transmissão
Insetos Vetores/classificação
Insetos Vetores/fisiologia
-Comportamento Animal
Densidade Demográfica
Colômbia
Habitação
Limites: Animais
Masculino
Feminino
Responsável: BR1.1 - BIREME


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Id: biblio-828772
Autor: Costa, Isabelle Matos Pinheiro; Calado, Daniela Cristina.
Título: Incidência dos casos de dengue (2007-2013) e distribuição sazonal de culicídeos (2012-2013) em Barreiras, Bahia / Incidencia de casos de dengue (2007-2013) y distribución estacional de los culícidos (2012-1013) en Barreiras, Bahía, Brasil / Incidence of dengue cases (2007-2013) and seasonal distribution of mosquitoes (Diptera: Culicidae) (2012-2013) in Barreiras, Bahia, Brazil
Fonte: Epidemiol. serv. saúde;25(4):735-744, out.-dez. 2016. tab, graf.
Idioma: pt.
Projeto: Fundação de Amparo à Pesquisa do Estado da Bahia (Fapesb).
Resumo: OBJETIVO: descrever a distribuição sazonal de culicídeos e a incidência dos casos de dengue em Barreiras, Bahia, Brasil. MÉTODOS: estudo descritivo com dados primários de distribuição de culicídeos em ovitrampas de abril de 2012 a março de 2013, e com dados secundários do Sistema de Informação de Agravos de Notificação, Vigilância Epidemiológica e Centro de Controle de Zoonoses, sobre casos da dengue e índices de infestação do Aedes aegypti de janeiro de 2007 a março de 2013. RESULTADOS: foram coletados 16.512 culicídeos; 62,0% corresponderam ao Culex quinquefasciatus (abundante na estação seca) e 38,0% ao Aedes aegypti (predominante na estação chuvosa); foram notificados 8.373 casos de dengue, com maior incidência por 100 mil habitantes em 2009 (704,5), 2011 (429,3) e 2013 (247,2), entre janeiro e junho. CONCLUSÃO: Culex quinquefasciatus e Aedes aegypti ocorreram em todos os meses; a incidência de dengue foi maior no período chuvoso e em anos alternados.

OBJETIVO: describir la distribución estacional de culícidos y la incidencia de casos de dengue en Barreiras, Bahia, Brasil. MÉTODOS: estudio descriptivo con datos primarios sobre la distribución de culícidos en ovitrampas entre abril-2012 y marzo-2013, y con datos secundarios del Sistema de Información (Sinan), Vigilancia Epidemiológica e Centro de ontrol de Zoonosis, sobre casos de dengue y tasas de infestación de Aedes aegypti, de enero-2007 a marzo-2013. RESULTADOS: fueron colectados 16.512 ejemplares de culícidos, 62,0% eran Culex quinquefasciatus (más abundante en época de sequía) y 38,0% eran Aedes aegypti (imperante en períodos lluviosos); fueron registrados 8.373 casos de dengue, con mayor incidencia por cada 100 mil habitantes en 2009 (704,5), 2011 (429,3) y 2013 (247,2), entre enero y junio. CONCLUSIÓN: Culex quinquefasciatus y Aedes aegypti ocurrieron en todos los meses; la incidencia de dengue fue mayor en el período de más lluvia y en años alternos.

OBJECTIVE: to describe seasonal mosquito distribution and the incidence of dengue cases in Barreiras, Bahia, Brazil. METHODS: this is a descriptive study using primary data on mosquito distribution in ovitraps from April 2012 to March 2013, as well as secondary data from the Notifiable Diseases Information System, Epidemiological Surveillance and the Zoonosis Control Center about dengue cases and Aedes aegypti infestation rates from January 2007 to March 2013. RESULTS: 16,512 mosquito specimens were collected, 62.0% were Culex quinquefasciatus (most frequent in the dry season) and 38.0% were Aedes aegypti (most frequent in the rainy season); 8,373 dengue cases were recorded, with highest incidence per 100,000 inhabitants in 2009 (n=704.5), 2011 (n=429.3) and 2013 (n=247.2), between January and June. CONCLUSION: Culex quinquefasciatus and Aedes aegypti occurred in all months; dengue incidence was higher in the rainy season and in alternating years.
Descritores: Aedes
Culex
Dengue/classificação
Dengue/epidemiologia
Vetores de Doenças
Insetos Vetores
-Estações do Ano
Epidemiologia Descritiva
Incidência
Densidade Demográfica
Limites: Seres Humanos
Animais
Masculino
Feminino
Responsável: BR1.1 - BIREME


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Id: biblio-841787
Autor: Saraiva, Lara; Leite, Camila Gonçalves; Lima, Ana Cristina Vianna Mariano da Rocha; Carvalho, Luiz Otávio Alves de; Pereira, Agnes Antônia Sampaio; Rugani, Jerônimo Marteleto Nunes; Rego, Felipe Dutra; Gontijo, Célia Maria Ferreira; Andrade Filho, José Dilermando.
Título: Seasonality of sand flies (Diptera: Psychodidae) and Leishmania DNA detection in vector species in an area with endemic visceral leishmaniasis
Fonte: Mem. Inst. Oswaldo Cruz;112(4):309-318, Apr. 2017. tab, graf.
Idioma: en.
Resumo: BACKGROUND Leishmaniases are a serious health problem in southeast Brazil, including the city of Belo Horizonte (BH), Minas Gerais state (MG), where there are high rates of incidence and mortality due to visceral leishmaniases. BH is divided into nine sanitary districts (SD) of which one, the Venda Nova SD, was selected for this study because it has high rates of positivity for canine leishmaniasis and high incidence of human leishmaniasis. OBJECTIVES This study aimed to survey the sand fly fauna in Venda Nova SD from August 2011 to July 2013 and perform a descriptive analysis of the vector population. METHODS The sampling was carried out using automatic HP light traps at all covered areas of the Venda Nova SD, in a total of eighteen light traps. Sampled specimens were identified following Galati (2003), and females were submitted to molecular techniques for the detection and identification of Leishmania DNA. A simple environmental description was done for it area and Kernel estimation was used to infer vector density for each study site. FINDINGS A total of 2,427 sand fly specimens belonging to eight species and five genera were collected of which 95.3% were Lutzomyia longipalpis. The seasonal variation curve was delineated by this species. Lu. longipalpis was the most abundant at all collection points and in all months of the study, and exhibited a natural infection rate of 1.01% for Leishmania infantum and 1.77% for Leishmania braziliensis. MAIN CONCLUSIONS The results show the presence and adaptation of Lu. longipalpis to the anthropic environment of BH and reinforces its role as the main vector of L. infantum in the region.
Descritores: Psychodidae/classificação
Psychodidae/parasitologia
Leishmaniose/transmissão
DNA de Protozoário/análise
Insetos Vetores/classificação
Insetos Vetores/parasitologia
Leishmania/isolamento & purificação
Leishmania/classificação
Leishmania/genética
-Estações do Ano
Brasil
Densidade Demográfica
Limites: Seres Humanos
Animais
Masculino
Feminino
Cães
Responsável: BR1.1 - BIREME


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Id: biblio-875794
Autor: Silva, Ramon Wilk da.
Título: Análise da estrutura populacional de mosquitos Aedes aegypti (Diptera: Culicidae) em diferentes estratos urbanos na cidade de São Paulo, utilizando morfometria geométrica alar e marcadores microssatélites / Analysis of the population structure of Aedes aegypti (Diptera: Culicidae) mosquitoes in different urban strata in the city of São Paulo, using wing geometric morphometry and microsatellite markers.
Fonte: São Paulo; s.n; 2017. 93 p.
Idioma: pt.
Tese: Apresentada a Universidade de São Paulo. Faculdade de Saúde Pública. Departamento de Epidemiologia para obtenção do grau de Mestre.
Resumo: O mosquito Aedes aegypti é reconhecido como o principal vetor do vírus da Dengue, além de transmitir outros arbovírus de importância médica, como os causadores da Febre Amarela urbana, Chikungunya e Zika. A ecologia deste vetor está intimamente associada ao homem, sendo provavelmente, a única espécie de culicídeo a conseguir completar todo seu ciclo de vida dentro das habitações humanas, com sua dinâmica populacional fortemente relacionada aos processos decorrente da urbanização. Assim como outras metrópoles, a cidade de São Paulo apresenta estresse ambiental, em função da elevada densidade populacional e urbanização não planejada, o que contribui para a proliferação do Ae. aegypti e, consequentemente, o aumento no número de casos de Dengue. Embora, vacinas como a da Febre Amarela e Dengue já tenham sido desenvolvidas, esta última mais recentemente e, ainda não empregada em larga escala, o controle do vetor ainda permanece como a principal estratégia para a disruptura dos padrões epidemiológicos das arboviroses causadas por seus patógenos. Estruturação populacional, geralmente é um resultado de combinações decorrentes de processos históricos e contemporâneos envolvendo determinada espécie, como a sua capacidade de dispersão, padrões de cópula, barreiras físicas e ambientais, além de padrões demográficos. Desse modo, determinar os diferentes papéis destes processos na estruturação de populações torna-se útil no controle de vetores de importância médica. Um bom exemplo é a propagação da resistência a inseticidas, em decorrência do fluxo gênico entre as populações. Portanto, um melhor conhecimento da estruturação populacional do Ae. aegypti é crucial para auxílio e desenvolvimento de novas estratégias de controle. Dessa forma, visando elucidar seu padrão de estruturação, o presente estudo utilizou-se da morfometria geométrica alar e de marcadores microssatélites, para investigação de 11 populações de mosquitos Ae. aegypti coletados em áreas com diferentes graus de urbanização, localizadas no município de São Paulo. Os resultados encontrados sugerem um padrão de estruturação de acordo com o gradiente de urbanização no qual os espécimes foram coletados. As distâncias de Mahalanobis, obtidas pela morfometria geométrica alar, apresentaram significância estatística em 54 dos 55 testes conduzidos, com as populações exibindo um claro padrão de segregação nas Análises de Variáveis Canônicas e Neighbor-Joining, tanto para as populações agrupadas na forma de seus estratos urbanos, como por seus respectivos locais de coleta, enquanto que o teste de reclassificação dos espécimes alcançou relativo grau de precisão de reconhecimento. Os microssatélites indicaram uma baixa estruturação genética (Fst = 0,057), com 93 por cento de seus valores apresentando significância estatística. Contudo, em conformidade com o gradiente de urbanização dos estratos, com moderado fluxo gênico, déficit de heterozigosidade e indícios de expansão populacional, principalmente nas áreas com maior grau de urbanização. A intensificação dos processos decorrentes da urbanização tem como causa a diminuição dos espaços verdes encontrados nas cidades, de modo a contribuir para a elevação da temperatura e, consequentemente, favorecer a proliferação do Ae. aegypti. Adicionalmente, a perda destes espaços implica no processo de homogeneização biótica, fenômeno que atua como adjuvante a plasticidade ecológica do vetor, de maneira a beneficia-lo. Hipótese, corroborada pela sua expansão populacional, exibida principalmente nos ambientes mais antropizados. A estruturação observada nas populações de Ae. aegypti no presente estudo indica que os processos de urbanização desempenham um importante papel na sua conformação, e fatores como o moderado fluxo gênico e déficit de heterozigosidade podem estar refletindo nos seus padrões epidemiológicos

Aedes aegypti is recognized as the main vector of Dengue, in addition to transmit other arboviruses of medical importance, as the agents of Yellow Fever, Chikungunya and Zika. The ecology of this vector is closely associated with the human, being probably the only kind of mosquito to be able to complete all their life cycle inside the human habitations, with their population dynamics strongly related to processes arising from urbanization. Like other cities, the city of São Paulo suffers from environmental stress due to the high population density and unplanned urbanization, which contributes to the proliferation of Ae. aegypti mosquitoes and consequently the increase in the number of cases of dengue fever. Although vaccines such as Yellow Fever and Dengue have already been developed, the latter, more recently, and not yet used on a large scale, vector control remains the main strategy for the disruption of epidemiological patterns of arboviral diseases caused by their pathogens. Structure of the population, is generally the result of combinations resulting from historical and contemporary processes involving certain species, such as their ability to disperse, copulation pattern, physical and environmental barriers and demographic trends, and to determine the different roles of these processes in structuring the population becomes very useful for the medical importance of vector control. A good example is the spread of insecticide resistance, due to gene flow between populations. Therefore, a better understanding of the population structure of Ae. Aegypti is crucial to support and develop new strategies for control programs. Thus, in order to elucidate its pattern of structuring this study utilized wing geometric morphometric and microsatellite markers, for investigation of 11 Ae. aegypti populations collected in areas with different degrees of urbanization, located in the municipality of São Paulo. The results suggest a pattern of structuring according to the urbanization gradient in which the specimens were collected. The distances of Mahalanobis obtained by wing geometric morphometry, statistically significant in 54 of the 55 tests performed, with populations showing a clear trend of segregation in the Canonical Variables analysis and Neighbor-Joining, both for the populations grouped in the form of their urban strata as per their respective collection locations, while the reclassification of test specimens reached relative degree of recognition accuracy. Microsatellites indicated a low genetic structure (Fst = 0.057), with 93 per cent of their statistically significant values. However, in accordance with the gradient of urbanization of the strata, with moderate gene flow, heterozygosity and evidence of population expansion, especially in the areas with the highest degree of urbanization. The intensification of the processes resulting from urbanization Implies in the reduction of the green spaces found in the cities, in order to contribute to the increase of the temperature and thus the proliferation of the Ae. Aegypti. In addition, the loss of these spaces involves biotic homogenization process, a phenomenon that acts as an adjuvant ecological plasticity of the vector, in order to benefit it. Hypothesis, corroborated by its population expansion, displayed mainly in anthropic environments. The structure observed in populations of Ae. aegypti in this study indicates that the urbanization processes play an important role in their conformation, and factors such as moderate gene flow and deficit of heterozygosity can be reflected in their epidemiological patterns
Descritores: Aedes/genética
Genética Populacional
Urbanização
Asas de Animais/anatomia & histologia
-Marcadores Genéticos
Densidade Demográfica
Limites: Animais
Responsável: BR67.1 - CIR - Biblioteca - Centro de Informação e Referência
BR67.1; MTR2260



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