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Id: biblio-991645
Autor: Barbosa, Gerson Laurindo; Lage, Mariana de Oliveira; Andrade, Valmir Roberto; Gomes, Antônio Henrique Alves; Quintanilha, Jose Alberto; Chiaravalloti-Neto, Francisco.
Título: Influence of strategic points in the dispersion of Aedes aegypti in infested areas / Influência de pontos estratégicos na dispersão de Aedes aegypti em áreas infestadas
Fonte: Rev. saúde pública (Online);53:29, jan. 2019. graf.
Idioma: en.
Projeto: Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP).
Resumo: ABSTRACT OBJECTIVE: To evaluate whether sites with large amount of potential breeding sites for immature forms of Aedes aegypti, called strategic points, influence in the active vector's dispersion into properties in their surroundings. METHODS: We selected four areas in the municipality of Campinas, three of them with strategic points classified as high, moderate, and low risk according to infestation and a control area, without strategic points. Between October 2015 and September 2016, we monthly installed oviposition traps and evaluated the infestation by Ae. aegypti in all properties of each selected area. To verify if there was vector dispersion from each strategic point, based on its location, we investigated the formation of clusters with excess of eggs or larvae or pupae containers, using the Gi spatial statistics. RESULTS: The amount of eggs collected in the ovitraps and the number of positive containers for Ae. aegypti did not show clusters of high values concerning its distance from the strategic point. Both presented random distribution not spatially associated with the positioning of strategic points in the area. CONCLUSIONS: Strategic points are not confirmed as responsible for the vector's dispersion for properties in their surroundings. We highlight the importance of reviewing the current strategy of the vector control program in Brazil, seeking a balance from the technical, operational, and economic point of view, without disregarding the role of strategic points as major producers of mosquitoes and their importance in the dissemination of arboviruses in periods of transmission.

RESUMO OBJETIVO: Avaliar se locais com grande quantidade de potenciais criadouros de formas imaturas de Aedes aegypti, denominados pontos estratégicos, influenciam a dispersão ativa do vetor aos imóveis no seu entorno. MÉTODOS: Foram selecionadas quatro áreas no município de Campinas, três delas com pontos estratégicos classificados como alto, médio e baixo risco segundo a infestação e uma área controle, sem ponto estratégico. Entre outubro de 2015 e setembro de 2016, instalaram-se mensalmente armadilhas de oviposição e avaliou-se a infestação por Ae. aegypti em todos os imóveis de cada área selecionada. Para verificar se houve dispersão do vetor a partir de cada ponto estratégico, com base em sua localização, investigou-se a formação de aglomerados com excesso de ovos ou de recipientes com larvas ou pupas, utilizando a estatística espacial Gi. RESULTADOS: o número de ovos coletados nas ovitrampas e o número de recipientes positivos para Ae. aegypti não apresentaram aglomerados de altos valores relativos à sua distância do ponto estratégico. Ambos apresentaram distribuição aleatória não associada espacialmente com o posicionamento dos pontos estratégicos na área. CONCLUSÕES: Pontos estratégicos não se confirmaram como responsáveis pela dispersão do vetor para os imóveis no seu entorno. Destaca-se a importância de rever a estratégia atual do programa de controle de vetores do Brasil, buscando um equilíbrio do ponto de vista técnico, operacional e econômico, sem desconsiderar o papel dos pontos estratégicos como grandes produtores de mosquitos e sua importância na disseminação de arboviroses em momentos de transmissão.
Descritores: Oviposição/fisiologia
Pupa/crescimento & desenvolvimento
Controle de Mosquitos/métodos
Aedes/crescimento & desenvolvimento
Dengue/prevenção & controle
Mosquitos Vetores/crescimento & desenvolvimento
-População Urbana
Brasil
Monitoramento Ambiental
Controle de Mosquitos/estatística & dados numéricos
Fatores de Risco
Aedes/virologia
Dengue/transmissão
Análise Espacial
Distribuição Animal/fisiologia
Mosquitos Vetores/virologia
Limites: Animais
Feminino
Responsável: BR1.1 - BIREME


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Id: biblio-899758
Autor: Alaniz, Alberto J; Bacigalupo, Antonella; Cattan, Pedro E.
Título: Zika: probabilidad de establecimiento de su vector, Aedes aegypti, en Chile / Zika: probability of establishment of its vector, Aedes aegypti, in Chile
Fonte: Rev. chil. infectol;34(6):553-556, dic. 2017. tab, graf.
Idioma: es.
Resumo: Resumen El virus Zika ha despertado una alarma mundial en los últimos años, representando un problema importante para la salud pública. En este estudio evaluamos el riesgo potencial de exposición a virus Zika en Chile, asociado a la probabilidad de establecimiento del vector Aedes aegypti en el país. Se utilizaron técnicas de modelación de nicho para proyectar los requerimientos bioclimáticos del vector (nicho global), identificando las zonas de alta idoneidad para la especie en el país. Luego, se superpuso la distribución potencial del vector en Chile con la densidad de población humana, estimando en forma espacialmente explícita el riesgo asociado a la co-ocurrencia potencial de ambos. Identificamos que existe idoneidad bioclimática para A. aegypti en Chile continental, desde el área tropical del norte hasta regiones templadas, principalmente en zonas costeras. La población potencialmente expuesta podría alcanzar 1,8 millones de personas, con 1,3 millones en nivel medio y 21.000 en niveles altos de riesgo potencial de exposición. Los resultados expuestos aquí muestran que existe una significativa probabilidad de éxito de colonización del vector principal de virus Zika en Chile continental en caso de una introducción. Por lo tanto, la prevención, monitoreo y control se vuelven un tema importante para evitar la llegada de este vector a Chile continental.

The Zika virus has raised world alarm in recent years, representing a major public health problem. In this study we evaluated the potential risk of exposure to Zika virus in Chile, associated with the probability of establishment of the vector Aedes aegypti in the country. Niche modelling techniques were used to project the bioclimatic requirements of the vector (global niches), identifying zones of high suitability for the species within the country. Then, the potential distribution of the vector in Chile was overlapped with the human population density, estimating the risk associated to the potential co-occurrence of both in a spatially explicit manner. We identified bioclimatic suitability for A. aegypti in continental Chile, from the northern tropical area to temperate regions, mainly in coastal zones. The exposed population could reach 1.8 million people, with 1.3 million in a medium level of potential risk and 21,000 in a high level. These results support that there is a significant probability of success for the Zika virus main vector to colonize continental Chile in case of an introduction. Therefore, prevention, monitoring, and control play an important role in avoiding the arrival of this vector to our country.
Descritores: Aedes/fisiologia
Aedes/virologia
Zika virus
Infecção por Zika virus/transmissão
Mosquitos Vetores/fisiologia
Mosquitos Vetores/virologia
-Chile
Fatores de Risco
Densidade Demográfica
Ecossistema
Medição de Risco/métodos
Exposição Ambiental/estatística & dados numéricos
Distribuição Animal
Limites: Animais
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-834319
Autor: Guerra-Centeno, Dennis; Fuentes-Rousselin, Héctor; Morán-Villatoro, David; Valdez-Sandoval, Carlos.
Título: Riqueza de herpetofauna de la Finca Universitaria San Julián, Patulul, Suchitepéquez, Guatemala / Herpetofaunal richness of San Julian Universitary Farm, Patulul, Suchitepequez, Guatemala
Fonte: Cienc. tecnol. salud;2(1):13-24, ene.-jun. 2015. ilus, tab.
Idioma: es.
Resumo: Aprovechando actividades de docencia de la Unidad de Vida Silvestre de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad de San Carlos de Guatemala, se investigó la riqueza de herpetofauna de la Finca Universitaria San Julián, en Patulul, Suchitepéquez. Se emplearon 3 métodos: (1) captura/avistamiento de especímenes, (2) investigación social, (3) investigación documental. Se recorrió repetidamente un transecto de 4.5 km de longitud a través del agro paisaje de la finca. Los recorridos del transecto abarcaron un período de 10 años (2003-2013), a razón de seis sesiones por año. Cada sesión de campo consistió en un recorrido diurno y un recorrido nocturno del transecto. Se invirtieron aproximadamente 3 hr en cada recorrido diurno y 4 hr en cada recorrido nocturno. El tiempo acumulado de búsqueda fue de 420 hr-transecto. Se recorrió el equivalente a 540 km abarcando elevaciones entre 447 y 550 msnm. En cada sesión de campo participaron entre 3 y 10 personas. Tres excazadores de la finca fueron entrevistados. Se analizaron publicaciones sobre distribución de la herpetofauna para Guatemala. Se generaron dos listas que suman 97 especies. Se discute la calidad y el significado de los datos generados.

The herpetofaunal richness of San Julian Universitary Farm (FUSJ), in Patulul, Suchitepequez, Guatemala, was investigated using three methods: (1) Capture/sighting of specimens, (2) social inquiry and (3) desk research. The field work was distributed over a 10 year period (2003-2013) at a rate of six fieldwork sessions each year. A 4.5 km long transect extending through the agricultural landscape of the farm was run repeatedly. Each fieldwork session included diurnal and nocturnal travels. The accumulated search time was 420 hr-transect. The equivalent to 337.5 of accumulated miles were traveled, including elevations between 1490 and 1833 feet above sea level. Three former hunters were interviewed and asked to identify species they think are present at the FUSJ. Published data were reviewed to determine which species were expected to occur in San Julian. Two lists (amphibians and reptiles) totaling 97 species (including 95 expected, 38 found and 2 not expected) was generated. The quality and significance of our data is discussed.
Descritores: Anfíbios/classificação
Biodiversidade
Répteis/classificação
-Distribuição Animal
Limites: Animais
Responsável: GT49.1


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Id: biblio-990440
Autor: Costa, André Tetzl; Dias, Edelberto Santos; Souza, Andreza Geisiane Maia; Silva, Fabiana de Oliveira Lara e; Machado-Coelho, George Luiz Lins.
Título: Ecology of phlebotomine sand flies in an area of leishmaniasis occurrence in the Xakriabá Indigenous reserve, Minas Gerais, Brazil
Fonte: Rev. Soc. Bras. Med. Trop;52:e20180474, 2019. tab, graf.
Idioma: en.
Resumo: Abstract INTRODUCTION: Leishmaniasis is a complex vector-borne infectious diseases caused by protozoan parasites in the genus Leishmania and spread by hematophagous phlebotomine sand flies (Diptera: Psychodidae, Phlebotominae). The aim of this study was to investigate the phlebotomine fauna, endophily and exophily of the species found, and possible influence of climatic factors on their populations. METHODS: The study was conducted in the Xakriabá Indigenous Reserve (XIR) in the municipality of São João das Missões in northern Minas Gerais state, Brazil. Insects were collected over three consecutive nights in the last week of each month for 12 months from July 2015 to May 2016 from four houses in four different villages. Two traps were set up in each house: one in the intra-domicile and another in the peri-domicile. RESULTS: A total of 2,012 phlebotomine sand fly specimens representing 23 species and belonging to 10 different genera were captured and identified. Among the studied villages, Riacho do Brejo showed the highest density and diversity of phlebotomine sand flies. The species Lutzomyia longipalpis (80.3%) and Nyssomyia intermedia (7.3%), which are major vectors of visceral and cutaneous leishmaniasis, respectively, had the highest population densities, both in the intra- and peri-domicile. No correlation was observed between climatic factors and the density of phlebotomine sand flies. CONCLUSIONS: The results of the present study may contribute to a better understanding and targeting of the measures for preventing and controlling leishmaniasis by the authorities responsible for indigenous health.
Descritores: Psychodidae/fisiologia
Leishmaniose Cutânea/transmissão
Conservação dos Recursos Naturais
Insetos Vetores/fisiologia
Leishmaniose Visceral/transmissão
-Estações do Ano
Fatores de Tempo
Brasil
Análise de Variância
Densidade Demográfica
Distribuição por Sexo
Ecossistema
Distribuição Animal
Limites: Animais
Masculino
Feminino
Responsável: BR1.1 - BIREME


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Id: biblio-1041569
Autor: Batista, Diego Gomes; Britto, Constança; Monte, Gersonval Leandro Silva; Baccaro, Fabrício Beggiato.
Título: Occurrence of triatomines (Hemiptera: Reduviidae) in domestic and natural environments in Novo Remanso, Itacoatiara, Amazonas, Brazil
Fonte: Rev. Soc. Bras. Med. Trop;52:e20190063, 2019. tab.
Idioma: en.
Projeto: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and Fundação de Amparo a Pesquisa no Amazonas; . CNPq.
Resumo: Abstract INTRODUCTION The present study reports the presence of triatomines in natural, peridomestic, and intradomicile environments in Itacoatiara municipality, state of Amazonas, a non-endemic region for Chagas disease. METHODS Active search was performed inside tree trunks, and palm trees, residences, and peridomiciles localized near the forest area. RESULTS: Twenty adults and ten triatomines nymphs were collected, fifteen of which were from natural forests, thirteen from intradomiciles, and two from peridomicile areas. CONCLUSIONS: The new records of adults and nymphs of triatomines in the intra- and peridomiciles suggest the adoption of prophylactic measures for vector surveillance in the study area.
Descritores: Triatominae/parasitologia
Insetos Vetores/parasitologia
-Trypanosoma cruzi/isolamento & purificação
Brasil
Florestas
Triatominae/classificação
Densidade Demográfica
Doença de Chagas/transmissão
Distribuição Animal
Habitação
Insetos Vetores/classificação
Limites: Animais
Feminino
Responsável: BR1.1 - BIREME


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Id: biblio-1057244
Autor: Silva, Tatiene Rossana Móta; Barros, Guilherme Mota Maciel do Rêgo; Lima, Thiago Antonio Rodrigues Freire; Giannelli, Alessio; Silva, Gesika Maria da; Alves, Karla Michelle de Lima; Carvalho, Gílcia Aparecida de; Ramos, Rafael Antonio Nascimento.
Título: Spatial distribution of triatomine bugs in a Chagas disease endemic region in Brazil
Fonte: Rev. Soc. Bras. Med. Trop;52:e20190278, 2019. tab, graf.
Idioma: en.
Resumo: Abstract INTRODUCTION: Trypanosoma cruzi is the etiological agent of Chagas disease (CD), a zoonotic infection transmitted by triatomine bug vectors to human beings. Although the story of this parasitic infection was born in Brazil and here this has made major step forward information, the same cannot be said about the actual distribution of the triatomine vector in several areas of this country. The aim of this study was to assess the occurrence of triatomine species in an endemic region for CD in Northeastern Brazil. METHODS: A retrospective study was performed using data obtained from 2008 to 2017. All information was provided by the V Gerência Regional de Saúde of the state of Pernambuco. The spatial distribution of triatomine species was analyzed by drawing a map using the Quantum geographic information system. RESULTS: A total of 4,694 triatomine specimens (469.4 ± 221.2 per year) were collected during the period 2008-2017, with 94.5% (4,434/4,694) at the intradomicile and 5.5% (260/4,694) at peridomicile environment. Of all arthropods collected, 92.5% (4,340/4,694) and 7.5% (354/4,694) were adults and nymphs, respectively. The species most frequently detected were Panstrongylus lutzi (30.36%), Triatoma brasiliensis (26.12%), Triatoma pseudomaculata (22.43%), and Panstrongylus megistus (20.54%). CONCLUSIONS: These data contribute to a better understanding of the distribution of T. cruzi infection in the Northeastern region of Brazil. Preventive measures based on vector control should be implemented in the study area in order to reduce the burden this neglected tropical disease.
Descritores: Triatominae/classificação
Distribuição Animal
Insetos Vetores/classificação
-Brasil
Estudos Retrospectivos
Densidade Demográfica
Doença de Chagas/transmissão
Doenças Endêmicas
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-1101455
Autor: Pereira, Nathália Cristina Lima; Michalsky, Érika Monteiro; Lara-Silva, Fabiana Oliveira; Lana, Rosana Silva; Paula, Adão Júnior Viana de; Pereira, Daniele Marques; Lopes, Josiane Valadão; Fortes-Dias, Consuelo Latorre; Dias, Edelberto Santos.
Título: Ecology of phlebotomine sand flies in a Brazilian area with recent leishmaniasis transmission (Itaúna, in Minas Gerais state)
Fonte: Rev. Soc. Bras. Med. Trop;53:e20190538, 2020. tab, graf.
Idioma: en.
Resumo: Abstract INTRODUCTION: Leishmaniasis constitutes a serious but neglected tropical disease. Recently, socio-environmental, biological and physical changes have altered the range of leishmaniasis, causing it to spread into urban areas. In Minas Gerais, the disease is endemic, exhibiting regional differences and reaching urban centers. The purpose of this study was to evaluate entomological aspects related to the ecoepidemiology of leishmaniasis in Itaúna. METHODS: Monthly catches with HP traps were carried out from June 2017 to May 2018, in three ecological areas (urban, rural, and forest). The adaptability of the species to anthropic environments was assessed using the synanthropy index (SI). RESULTS: We collected 1306 specimens of phlebotomine sand flies. Of the species of medical importance, Lutzomyia longipalpis, the vector of Leishmania infantum, represented 90.4% of the specimens identified at species level (n=1260). Nyssomyia whitmani, the vector of Leishmania braziliensis, represented 1.6% of the total. Lu. longipalpis displayed an SI of +95.8, a value that denotes a marked preference for human environments. For Ny. whitmani, the SI was -25, expressing the tendency of this species to occupy uninhabited areas. The population of the three most numerous species captured increased with rain, high temperatures, and high relative humidity. Although captured at low numbers, Ny. whitmani showed a different profile concerning the climate variables analyzed. CONCLUSIONS: Understanding the epidemiology of the disease may assist the health services in formulating effective control measures for improving community health and contributing to the establishment of a dynamic relationship and a global awareness of the health/disease process.
Descritores: Psychodidae/classificação
Insetos Vetores/classificação
-População Rural
Estações do Ano
População Urbana
Brasil
Leishmaniose/transmissão
Distribuição Animal
Limites: Animais
Masculino
Feminino
Responsável: BR1.1 - BIREME


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Id: biblio-1101440
Autor: Arduino, Marylene de Brito; Mucci, Luis Filipe; Santos, Luciana Mamede dos; Soares, Marilena Fogaça de Souza.
Título: Importance of microenvironment to arbovirus vector distribution in an urban area, São Paulo, Brazil
Fonte: Rev. Soc. Bras. Med. Trop;53:e20190504, 2020. tab, graf.
Idioma: en.
Projeto: São Paulo State Research Support Foundation.
Resumo: Abstract INTRODUCTION: The study of the landscape ecology, biological microhabitat, and epidemiological implications for the distribution of the main vectors Aedes aegypti and Aedes albopictus contribute to the prevention and control actions regarding the diseases they transmit. METHODS: This study sought to assess data on positive properties of the vector control program activities from 1998 to 2010. An entomological survey was also carried out on a sample of buildings collecting larvae and pupae from containers between October and April (spring / summer) from 2002 to 2005. We assessed the physico-chemical data of the water in 20% of positive containers. The vegetation and urbanization were assessed with the aid of satellite images and microenvironments were classified as urbanized, woods, and shrubs. The data were analyzed using statistical and geoprocessing software. RESULTS: Ae. aegypti and Ae. albopictus colonized all types of microhabitats and microenvironments, predominantly in the urbanized area, in isolation and in coexistence. The microhabitat of Ae. aegypti showed a temperature gradient greater than that of Ae. albopictus, and there was an association with urbanized areas for the first species and wooded areas for the last species. CONCLUSIONS: Landscape ecology and intra-urban differences favor different microclimates, which contribute to the coexistence of species in the urban environment in an area close to the forest, raising the risk of other arbovirus infections in urban areas. The ecological niche should be considered for Ae. albopictus. Entomological and virologic monitoring are suggested as arbovirus surveillance actions in urban infested centers near preserved forests.
Descritores: Ecossistema
Aedes/fisiologia
Mosquitos Vetores/fisiologia
-Infecções por Arbovirus/transmissão
Estações do Ano
População Urbana
Brasil
Densidade Demográfica
Aedes/classificação
Análise Espacial
Distribuição Animal
Mosquitos Vetores/classificação
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-1149064
Autor: de Roodt, Adolfo R; Lanari, Laura C; Remes-Lenicov, Mariana; Cargnel, Elda; Damin, Carlos F; Greco, Vanina; Orduna, Tomás A; Lloveras, Susana; Desio, Marcela A; van Grootheest, Jantine H; Casas, Natalia; Ojanguren-Affilastro, Andrés.
Título: Expansión de la distribución de escorpiones del género Tityus C. L. Koch 1836 en Argentina: Implicancias sanitarias / Expansion of the distribution of scorpions of the genus Tityus C. L. Koch 1836 in Argentina: Implications in public health
Fonte: Acta toxicol. argent;27(3):109-119, Dec. 2019. ilus.
Idioma: es.
Resumo: Se ha observado la presencia de especies de Tityus en diferentes regiones del país, en las cuales su presencia no había sido comunicada previamente: 1- Tityus bahiensis en las provincias de Entre Ríos y Buenos Aires, en esta última en la localidad de Lanús y en San Clemente del Tuyú, y 2- Tityus confluens en la Ciudad Autónoma de Buenos Aires (CABA) y en la provincia de Buenos Aires en las localidades de Pilar, La Plata, Mar del Plata y Bahía Blanca. Estos hallazgos modifican el mapa de la distribución de escorpiones de importancia sanitaria en Argentina por lo que ante la picadura de escorpiones deben considerarse estos nuevos hallazgos. Esto es especialmente importante en el ámbito de la CABA y la provincia de Buenos Aires, en donde la enorme mayoría de los accidentes por escorpiones han sido causados por T. trivittatus y en donde ahora, al menos en algunas de sus regiones se pueden encontrar T. confluens y T. bahiensis. Se discuten posibles razones de esta nueva distribución así como la ocurrencia de accidentes graves en zonas donde no ocurrían históricamente y de sus posibles causas. En base a los casos graves producidos en los últimos tiempos y a este nuevo mapa de distribución, se hace énfasis en la necesidad de capacitación al personal de salud en general y de los médicos de guardia y terapistas en particular, para tratar adecuadamente los accidentes por escorpiones.

Several species of Tityus have been described in regions of Argentina where their presence had not been previously described. These are: 1- Tityus bahiensis in the provinces of Entre Ríos and Buenos Aires (in the localities of Lanús and San Clemente del Tuyú), and 2- Tityus confluens in the city of Buenos Aires and in the province of Buenos Aires in the localities of Pilar, La Plata, Mar del Plata and Bahía Blanca. These findings modify the distribution map of scorpions of sanitary importance in Argentina, reason for which this new distribution must be considered when facing a scorpion sting. This is especially important in the city of Buenos Aires and the province of Buenos Aires, where most of the accidents by scorpions are caused by Tityus trivittatus, and where at least in some of their regions, T. confluens or T. bahiensis can be found at present. The possible reasons of this new distribution, as well as the possible causes for the occurrence of severe envenomations in regions where these were not observed historically, are discussed. Based on the severe envenomations observed and on this new distribution map, emphasis is placed on the need to capacitate health personnel in general and intensivists or critical care physicians in particular to adequately treat scorpion accidents.
Descritores: Venenos de Escorpião/toxicidade
Escorpiões/classificação
Antivenenos/uso terapêutico
Distribuição Animal
-Argentina/epidemiologia
Saúde Pública
Picadas de Escorpião/tratamento farmacológico
Picadas de Escorpião/terapia
Picadas de Escorpião/epidemiologia
Limites: Humanos
Animais
Responsável: AR658.1 - Biblioteca Central "Leopoldo Marechal"


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Id: biblio-1121077
Autor: Pasini, Mauricio Paulo Batistella; Engel, Eduardo; Lúcio, Alessandro Dal'Col; Cargnelutti Filho, Alberto; Ribeiro, Ana Lúcia de Paula; Bortolotto, Rafael Pivoto; Zamberlan, João Fernando.
Título: Spatialization of Tibraca limbativentris Stål in irrigated rice: a geostatistical approach / Espacialização de Tibraca limbativentris Stål em arroz irrigado: uma abordagem geoestatística
Fonte: Arq. Inst. Biol;87:e1202018, 2020. ilus, tab.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico.
Resumo: The objective was to identify the dispersion of Tibraca limbativentris (Hemiptera: Pentatomidae) in different phenological phases of irrigated rice. The research was carried out in an area of 20.12 ha, subdivided in four fields of 0.25 to 14.1 ha with the irrigated rice culture, grown under the technical recommendations of the culture. In each field, a sampling grid of 30 × 30 m was generated, with each sampling point corresponding to 1·m-2 (200 plants), sampling was through direct counting. The number of adults of T. limbativentris·m-2 was subjected to descriptive and geostatistical analyzes. Tibraca limbativentris presents border dispersion towards the center of the irrigated rice cultivation area. The highest population densities were estimated in the anthesis and elongation phase.(AU)

O objetivo foi identificar a dispersão de Tibraca limbativentris (Hemiptera: Pentatomidae) em diferentes fases fenológicas do arroz irrigado. A pesquisa foi realizada em uma área de 20,12 ha, subdividida em quatro lavouras de 0,25 a 14,1 ha com a cultura de arroz irrigado, cultivadas sob as recomendações técnicas da cultura. Em cada lavoura, foi gerado um grid de amostragem de 30 × 30 m sendo cada ponto amostral correspondente a 1·m-2 (200 plantas), a amostragem realizada foi através de contagem direta. O número de adultos de T. limbativentris·m-2 foi submetido a análises descritivas e geoestatística. Tibraca limbativentris apresenta dispersão das bordaduras para o centro da área de cultivo de arroz irrigado. As maiores densidades populacionais foram estimadas na fase de antese e elongação.(AU)
Descritores: Oryza
Irrigação Agrícola
Distribuição Animal
Hemípteros
-Brasil
Densidade Demográfica
Responsável: BR1942.1 - NID - Biblioteca - Núcleo de Informação e Documentação



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