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| Registros recuperados: 39 | |
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| Piovezan,Rafael; Acorinthe,João Paulo Oliveira; Souza,Jonas Henrique Teixeira de; Visockas,Alexandre; Azevedo,Thiago Salomão de; Zuben,Cláudio José Von. |
| ABSTRACT In view of the adaptive ability of mosquitoes and their role in the transport of infective agents, entomological surveys undertaken in transitional environments are very important for the determination of the risk they represent for Public Health. Among the principal vectors of the infectious agents involved in the occurrence of important arboviruses, such as dengue, for example, are the Culicidae-insects capable of installing themselves in the urban nuclei, which exist within areas containing vestigial forests. This present study conducted a survey of mosquito species by means of traps to catch their larvae installed in five rural areas within the Atlantic Forest domain and containing its vestigial vegetation in the municipality of Santa Bárbara... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Aedes albopictus; Dengue; Entomological surveillance; Spatial analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000200123 |
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| Nunes-Silva,Aline; Lima-Keppe,Isabela de; Souza,Robson V. de; Perbiche-Neves,Gilmar. |
| ABSTRACT Copepods have been successfully used in many countries for the biological control of larvae of mosquitoes that vector diseases. In Brazil, this line of research has been focused on the use of the copepod Mesocyclops longisetus (Thiébaud, 1914) for the biological control of the mosquito Aedes aegypti (Linnaeus, 1792). The transportation of the copepods from the place where they are reared to where they will be used often involves long distances for extended periods of time. This study assesses the survivorship of M. longisetus during simulation of transport under different conditions. Different loading densities (20, 30, 40, 80, and 120 ind.L) and stirring times (30 minutes, one hour, two hours, and four hours) were tested. Survivorship was high,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Copepoda; Culicidae; Density. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100309 |
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| Espitia-Baena,Jorge Eliecer; Duran-Sandoval,Harriette del Rosario; Fandiño-Franky,Jaime; Díaz-Castillo,Fredyc; Gómez-Estrada,Harold Alberto. |
| Introducción: el árbol de Crescentia cujete L. (Bignonaceae), conocido en Colombia como totumo, es una especie característica de climas tropicales. Su rasgo más distintivo es el fruto, el cual es una calabaza esférica con cáscara dura y leñosa, y una pulpa gelatinosa con numerosas semillas. Objetivo: realizar el estudio químico y biológico sobre el extracto etanólico del epicarpio de Crescentia cujete L. Métodos: se recolectó el material vegetal y se obtuvo el extracto etanólico total. Luego se realizó el tamizaje preliminar fitoquímico, los ensayos físico-químicos directos sobre el material vegetal, la cuantificación de metales pesados y, finalmente, el estudio biológico frente a larvas de Aedes aegypti L. (Culicidae) en estadios III y IV, larvas de... |
| Tipo: Journal article |
Palavras-chave: Crescentia cujete; Totumo; Aedes aegypti; Artemia salina; Allium cepa. |
| Ano: 2011 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962011000400005 |
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| Lopes,José. |
| To verify the possible occurrence of Aedes aegypti (Linnaeus, 1761) and Aedes albopictus (Skuse, 1894) in a rural area in Northern Paraná, Brazil, a water tank was installedon a farm, to work as an artificial breeding site. Collections were carried out every 15 days, during a period of 2 years. 12,876 Culicidae larvae, belonging to 10 different species, including Aedes aegypti and Aedes albopictus, were collected, indicating their occurrence. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Culicidae; Larvae; Artificial container breeding; Aedes aegypti; Aedes albopictus. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400012 |
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| Pohlit,Adrian Martin; Quinard,Etienne Louis Jacques; Nunomura,Sergio Massayoshi; Tadei,Wanderli Pedro; Hidalgo,Ari de Freitas; Pinto,Ana Cristina da Silva; Santos,Elba Vieira Mustafa dos; Morais,Sabrina Kelly Reis de; Saraiva,Rita De Cássia Guedes; Ming,Lin Chau; Alecrim,Alexandre Mascarenhas; Ferraz,Alfeu de Barros; Pedroso,Andreza Cristiana da Silva; Diniz,Elisangela Vieira; Finney,Ellen Kathryn; Gomes,Erika de Oliveira; Dias,Hercules Bezerra; Souza,Katiuscia dos Santos de; Oliveira,Laura Cristina Pereira de; Don,Luciana de Castro; Queiroz,Maria Mireide Andrade; Henrique,Marycleuma Campos; Santos,Mirian dos; Lacerda Júnior,Orivaldo da Silva; Pinto,Patrícia de Souza; Silva,Suniá Gomes; Graça,Yara Rodrigues. |
| Ethanol, methanol and water extracts representing mostly native plant species found in the Amazon region were prepared, respectively, by maceration, continuous liquid-solid extraction and infusion, followed by evaporation and freeze-drying. The freeze-dried extracts were tested for lethality toward Aedes aegypti larvae at test concentrations of 500 mg / mL. In general, methanol extracts exhibited the greatest larvicidal activity. The following 7 methanol extracts of (the parts of) the indicated plant species were the most active, resulting in 100% mortality in A. aegypti larvae: Tapura amazonica Poepp. (root), Piper aduncum L. (leaf and root), P. tuberculatum Jacq. (leaf, fruit and branch). and Simaba polyphylla (Cavalcante) W.W. Thomas (branch). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Larvicide; Aedes aegypti; Tapura; Piper; Simaba; Amazonia. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000100012 |
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| Araújo, José Rafael Silva; Costa, Maria Wlly da Silva; Oliveira, Wallace Baldez; Cavalcante, Reginaldo Roris; Almeida, Pedro Marcos; Martins, Francielle Alline. |
| The present study aimed to evaluate the larvicidal effect of aqueous leaf extract from Jatropha mollissima on the larvae of Aedes aegypti and analyze its cytotoxic and genotoxic activity in the Allium cepa test. Larvae of the mosquito were exposed to the negative and positive controls (distilled water and diflubenzuron, 0.003 mg mL-1, respectively) and to leaf extract concentrations of 0.001, 0.005, 0.01, 0.02, 0.04, 0.06, 0.08 and 0.1 mg mL-1. The mortality rate was evaluated every 24 hours over five days. For the cytotoxic and genotoxic analyses, roots of A. cepa were exposed to the negative (distilled water) and positive control (trifluralin, 0.84 ppm) and to different leaf extract concentrations (0.01, 0.1, 1 and 10 mg mL-1) for 24 hours. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Allium cepa test; Chromosome alterations; Medicinal plant.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34501 |
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| RICARTE,LARA P.; BEZERRA,GABRIELI P.; ROMERO,NIRLA R.; SILVA,HORLANDO C. DA; LEMOS,TELMA L.G.; ARRIAGA,ANGELA M. C.; ALVES,PÉRICLES B.; SANTOS,MARCELO B. DOS; MILITÃO,GARDENIA C.G.; SILVA,THIAGO D.S.; BRAZ-FILHO,RAIMUNDO; SANTIAGO,GILVANDETE M.P.. |
| Abstract The essential oils obtained by hydrodistillation from fresh leaves of Vitex agnus-castus and Ocimum campechianum, and from fresh inflorescences of Ocimum carnosum were analysed by GC-FID and GC-MS. The major components of V. agnus-castus essential oil were identified as 1,8-cineole (47.9%), terpinyl α-acetate (11.6%), sabinene (11.2%) and caryophyllene oxide (9.7%), while in the O. campechianum essential oil were eugenol (72.1%), β-elemene (6.8%), (E)-caryophyllene (6.4%) and bicyclogermacrene (5.2%). Linalool (79.0%), α-epi-cadinol (5.4%), terpinen-4-ol (3.2%) and 1,8-cineole (2.8%) were the major constituents in the O. carnosum essential oil. The essential oils were subsequently evaluated for their larvicidal and cytotoxic activities. Larval... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Cytotoxic activity; Lamiaceae; Larvicidal activity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100718 |
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| Farias,Davi F.; Cavalheiro,Mariana G.; Viana,Martônio P.; Queiroz,Vanessa A.; Rocha-Bezerra,Lady C.B.; Vasconcelos,Ilka M.; Morais,Selene M.; Carvalho,Ana F.U.. |
| This study assessed the toxicity of seed water extracts of 15 leguminous species upon Aedes aegypti larvae. A partial chemical and biochemical characterization of water extracts, as well as the assessment of their acute toxicity in mice, were performed. The extracts of Amburana cearensis, Anadenanthera macrocarpa, Dioclea megacarpa, Enterolobium contortisiliquum and Piptadenia moniliformis caused 100% of mortalit y after 1 to 3 h of exposure. They showed LC50 and LC90 values ranging from 0.43 ± 0.01 to 9.06 ± 0.12 mg/mL and from 0.71 ± 0.02 to 13.03 ± 0.15 mg/mL, respectively. Among the secondary metabolite constituents, the seed water extracts showed tannins, phenols, flavones, favonols, xanthones, saponins and alkaloids. The extracts also showed high... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Larvicidal compounds; Leguminous seeds; Water extracts. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300006 |
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| Ferreira,Paulo M.P.; Carvalho,Ana F.U.; Farias,Davi F.; Cariolano,Nara G.; Melo,Vânia M.M.; Queiroz,Maria G.R.; Martins,Alice M.C.; Machado-Neto,Joaquim G.. |
| In this work, biological effects of the water extract of Moringa oleifera seeds (WEMOS) were assessed on eggs and 3rd instar larvae of Aedes aegypti and on its toxicity upon laboratory animals (Daphnia magna, mice and rats). Crude WEMOS showed a LC50 value of 1260µg/mL, causing 99.2 ± 2.9% larvae mortality within 24 h at 5200µg/mL, though this larvicidal activity has been lost completely at 80ºC/10 min. WEMOS did not demonstrate capacity to prevent egg hatching. After extensive dialyses of the crude WEMOS into watersoluble dialyzable (DF) and nondyalizable (NDF) fractions, only DF maintained its efficacy to kill larvae. Acute toxicity evaluations on daphnids (EC50 of 188.7µg/mL) and mice (LD50 of 446.5 mg/kg body weight) pointed out to low toxicity.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Daphnia magna; Larvicidal activity; Moringa oleifera seeds; Toxicity. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200007 |
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| PAIVA,DERISVALDO R.; LIMA,DÊNIS P. DE; AVVARI,NAGA P.; ARRUDA,EDUARDO J. DE; CABRINI,ISAIAS; MARQUES,MARIA RITA; SANTOS,EDSON A. DOS; BIAGGIO,FRANCISCO C.; SANGI,DIEGO P.; BEATRIZ,ADILSON. |
| ABSTRACT Cardanol is a constituent of Cashew Nut Shell Liquid that presents larvicidal activity against Aedes aegypti. The isolation of cardanol is somewhat troublesome, however, in this work we describe an efficient and inexpensive method to obtain it as a pure material. The compound was used as starting material to make chemical transformation leading to saturated cardanol, epoxides and, halohydrins. These derivatives were tested for toxicity against Aedes aegypti larvae. The results showed that iodohydrins are very promising compounds for making commercial products to combat the vector mosquito larvae presenting a LC50 of 0.0023 ppm after 72 h of exposure. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Insecticide; Larvicide; Phenolic lipids; CNSL. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200373 |
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| RODRIGUES NETO,AGEU A.; GOMES JÚNIOR,PLÍNIO P.; SILVA,MAURICIO C.; LIMA,CLÁUDIA S.A.; YARA,RICARDO; GUIMARÃES,EMÍLIA B.; SANTANA,EDUARDA S. DE; SILVA,LUZIA A. DA; LIRA,EDUARDO J.R.V. DE; VIEIRA,JEYMESSON R.C.. |
| ABSTRACT Rhizophora mangle is an abundant plant in mangroves and tannic acid is a polyphenol produced by the secondary metabolism of plants. The aim of the study was to evaluate the embryotoxic and embriostatic effects of the aqueous extract of R. mangle and synthetic tannic acid on eggs and larvae of Aedes aegypti. A. aegypti eggs were exposed in duplicate at concentrations of 250, 500, 750 and 1000 µg/mL of extract and tannic acid for a period of 14 days. Mineral water was used as a negative control. The eggs were observed and counted in a stereomicroscope (1.2x). In all extract concentrations there was stimulation in hatching in relation to the control, but only in concentration of 750 mg/mL it was statistically significant. In tannic acid (250µg/ml)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Embryostatic; Embryotoxic; Rhizophora mangle; Tannic acid. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502141 |
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| Ayaad,Tahany Hassan; Al-Akeel,Rasha Khalifah; Olayan,Ebtisam. |
| ABSTRACT The present investigation deals with the isolation and characterization of a lectin from Aedes aegypti (Ae aegypti) female mid gut extract that agglutinates various mammalian red blood cells (RBCs) such as human three groups A, B, and O (RH+), mouse, rat, guinea-pig, sheep and goat erythrocytes. The highest activity of both crude and isolated mid gut lectins were detected against sheep RBCs. Using (NH4)2 SO4 fractionation, ion-exchange and mannose-CNBr-Sepharose 6B affinity chromatography techniques, Ae. aegypti midgut lectin (Aelec) was purified to homogeneity.Isoelectric focusing (IEF) and reducing SDS/PAGE revealed that the isolated mid gut lectin had isoelectric point (PI) of 5.90, and subunits approximate molecular weights of 35.50 and 27.35... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lectin; Purification; Characterization; Hemagglutination; Aedes aegypti; Mosquitoes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000600905 |
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| Araujo,Ricardo Vieira; Albertini,Marcos Roberto; Costa-da-Silva,André Luis; Suesdek,Lincoln; Franceschi,Nathália Cristina Soares; Bastos,Nancy Marçal; Katz,Gizelda; Cardoso,Vivian Ailt; Castro,Bronislawa Ciotek; Capurro,Margareth Lara; Allegro,Vera Lúcia Anacleto Cardoso. |
| Urban heat islands are characterized by high land surface temperature, low humidity, and poor vegetation, and considered to favor the transmission of the mosquito-borne dengue fever that is transmitted by the Aedes aegypti mosquito. We analyzed the recorded dengue incidence in Sao Paulo city, Brazil, in 2010-2011, in terms of multiple environmental and socioeconomic variables. Geographical information systems, thermal remote sensing images, and census data were used to classify city areas according to land surface temper- ature, vegetation cover, population density, socioeconomic status, and housing standards. Of the 7415 dengue cases, a majority (93.1%) mapped to areas with land surface temperature >28 ◦ C. The dengue incidence rate (cases per 100,000... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Urban heat islands; Land surface temperature; Vegetation cover; Dengue; Aedes aegypti. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000200146 |
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| Quintero-Gil,Diana Carolina; Uribe-Yepes,Alexander; Ospina,Marta; Díaz,Francisco Javier; Martinez-Gutierrez,Marlen. |
| ABSTRACT Dengue, the most prevalent arboviral disease worldwide, is caused by any of the four dengue virus (DENV) serotypes that co-circulate constantly in hyperendemic areas such as Medellin (Colombia), and these serotypes are transmitted by mosquitoes of the genus Aedes. In this study, we evaluated the replicative capacity of strains isolated in Medellin between 2003 and 2007 in C6/36 cells and in colonies of Aedes aegypti collected during 2010-2011 from high or low-incidence areas within the same city. The phylogenetic analysis grouped isolates according to the predominant genotypes found in the Americas, and the in vitro characterization showed differences in the morphological changes induced by the isolates of each of the isolated serotypes compared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dengue; Viral replication; Vector competence; Aedes aegypti; C6/36 cells; Colombia. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000400257 |
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| Maniero,V.C.; Rangel,P.S.C.; Coelho,L.M.C.; Silva,C.S.B.; Aguiar,R.S.; Lamas,C.C.; Cardozo,S.V.. |
| A progressive increase in the circulation of arboviruses in tropical countries has been observed, accounting for 700,000 yearly deaths in the world. The main objective of this article was to identify the presence of Zika (ZIKV), dengue (DENV), and Chikungunya (CHIKV) viruses in immature stages of Aedes aegypti and Ae. albopictus. Household collections of immature phases of the vectors were carried out in the years 2015 and 2016. A total of 2902 dwellings were visited and the rate of infestation with larvae and pupae of Aedes mosquitoes was 283/1462 (19.4%) in March 2015 and 55/1440 (3.8%) in June 2015. In March 2015, 907 larvae/pupae were collected (583 or 64.3% of Ae. aegypti and 324 or 35.7% of Ae. albopictus) while in June 2015 there was a reduction in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zika virus; Aedes aegypti; Aedes albopictus; Arbovirus; Georeferencing; Xenomonitoring. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019001100605 |
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| Registros recuperados: 39 | |
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