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Registros recuperados: 38
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A potent larvicidal agent against Aedes aegypti mosquito from cardanol Anais da ABC (AABC)
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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Alcaloides de pemoche (Erythrina herbacea L.) como larvicidas contra el mosquito de la fiebre amarilla (Aedes aegypti L.). Colegio de Postgraduados
Salazar Aguilar, Sandra.
El mosquito transmisor de la fiebre amarilla, A. aegypti, también es vector del dengue, enfermedad con importancia a nivel mundial por la problemática socioeconómica provocada en las epidemias. En México los estados considerados económicamente importantes, son áreas potenciales la transmisión de esta enfermedad. Por lo que la búsqueda de sustancias para el control de este organismo es importante, ya que comienza a volverse resistente a insecticidas organosintéticos. Así en el presente estudio se realizaron pruebas con extractos de pemoche Erythrina herbacea, para encontrar posibles sustancias que puedan utilizarse para este fin. Se obtuvieron de las semillas de esta especie, los extractos crudos metanólicos: fracción de alcaloides libres (FAL) y fracción...
Palavras-chave: Erythrina herbacea; Aedes aegypti; Toxicidad de alcaloides; Actividad larvicida; Alcaloide diénico; Toxicity of alkaloids; Larvicida activity; Dienic alkaloid; Maestría; Botánica.
Ano: 2011 URL: http://hdl.handle.net/10521/406
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Alcaloides de pemoche (Erythrina herbacea L.) como larvicidas contra el mosquito de la fiebre amarilla (Aedes aegypti L.). Colegio de Postgraduados
Salazar Aguilar, Sandra.
El mosquito transmisor de la fiebre amarilla, A. aegypti, también es vector del dengue, enfermedad con importancia a nivel mundial por la problemática socioeconómica provocada en las epidemias. En México los estados considerados económicamente importantes, son áreas potenciales la transmisión de esta enfermedad. Por lo que la búsqueda de sustancias para el control de este organismo es importante, ya que comienza a volverse resistente a insecticidas organosintéticos. Así en el presente estudio se realizaron pruebas con extractos de pemoche Erythrina herbacea, para encontrar posibles sustancias que puedan utilizarse para este fin. Se obtuvieron de las semillas de esta especie, los extractos crudos metanólicos: fracción de alcaloides libres (FAL) y fracción...
Palavras-chave: Erythrina herbacea; Aedes aegypti; Toxicidad de alcaloides; Actividad larvicida; Alcaloide diénico; Toxicity of alkaloids; Larvicida activity; Dienic alkaloid; Maestría; Botánica.
Ano: 2011 URL: http://hdl.handle.net/10521/406
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Bt-horus, um biolarvicida à base da Bacillus thuringiensis para controle de larvas de Aedes aegypti. Infoteca-e
MONNERAT, R. G.; SOARES, C. M.; ROBERG, R. A.; DUMAS, V. F.; RAMOS, F. R.; PRAÇA, L. B.; MARTINS, E. S.; QUEIROZ, P. R.; SUJII, E. R..
bitstream/CENARGEN-2009-09/31571/3/bp220_0908.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Bt-horus; Biolarvicida.; Bactéria; Bacillus Thuringiensis; Controle Biológico.; Aedes aegypti; Dengue..
Ano: 2008 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/191221
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Campanha "São Sebastião inova no combate à dengue" continua com bons resultados e muito apoio da população. Infoteca-e
DINIZ, F..
bitstream/CENARGEN/30148/1/bpecuario090207.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E) Palavras-chave: São Sebastião; Bioinseticida.; Aedes aegypti; Dengue..
Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/190011
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Chemical composition and biological activities of the essential oils from Vitex-agnus castus, Ocimum campechianum and Ocimum carnosum Anais da ABC (AABC)
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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Desempenho de um pulverizador pneumático costal motorizado sob diferentes condições REA
Gadanha Júnior,Casimiro D.; Costa,Marco A. F. da; Milan,Marcos.
O objetivo do trabalho foi avaliar a uniformidade de vazão de um pulverizador pneumático costal motorizado, utilizado no controle do mosquito vetor da dengue, sob várias condições operacionais de aplicação. O experimento foi planejado como um delineamento inteiramente casualizado, no esquema fatorial 2 x 7, com cinco repetições, sendo os fatores de variação dois diâmetros de orifício do disco dosador e sete ângulos de aplicação em relação ao plano horizontal. Foi avaliado também o efeito das pressões sobre a vazão por meio dos testes de Pearson. A interação dos fatores diâmetro do orifício do disco dosador e ângulo de aplicação foi significativa para a vazão. O disco dosador com diâmetro de 0,42 mm apresentou maior uniformidade entre as vazões médias,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Controle químico; Pulverizador.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162004000300023
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Differences in the replicative capacities of clinical isolates of dengue virus in C6/36 cells and in urban populations of Aedes aegypti from Colombia, South America BJID
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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Effect of phenobarbital on inducing insecticide tolerance and esterase changes in Aedes aegypti (Diptera: Culicidae) Genet. Mol. Biol.
Sousa-Polezzi,Rita de Cássia; Bicudo,Hermione Elly Melara de Campos.
The effect of phenobarbital (PB) on the induction of tolerance to the organophosphorous insecticide temephos (TE) was investigated in Aedes aegypti L4 larvae submitted to two different PB-treatments:(1) continuous treatment from the egg to the larval L4 stage and (2) discontinuous treatment in which L4 larvae were exposed for 30 h. Mosquitoes from two Brazilian cities were studied: São José do Rio Preto (SJ) in São Paulo State and Goiânia (GO) in Goiás State. According to criterions established by World Health Organization (WHO) mosquitoes from SJ are organophosphate-susceptible while mosquitoes from GO are organophosphate-resistant. For both SJ and GO larvae the two different PB-treatments resulted in significantly increased tolerance (measured by reduced...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Insecticide resistance; Phenobarbital; Tolerance; Pyperonyl butoxide; Esterases.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000200024
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Effects of caffeine and used coffee grounds on biological features of Aedes aegypti (Diptera, Culicidae) and their possible use in alternative control Genet. Mol. Biol.
Laranja,Alessandra Theodoro; Manzatto,Antonio José; Campos Bicudo,Hermione Elly Melara de.
Caffeine and used coffee grounds completely blocked the development of Aedes aegypti in the early stages, in treatments with the concentrations 1.0 mg/mL and 50 mg/mL, respectively. More advanced stages and even adults were obtained in lower concentrations of both substances, enabling observations to be made of mortality rate, longevity and esterase patterns. The experiments involved treatments using either eggs or 3rd instar larvae (L3), with or without the addition of fish food. Mortality rates prior to the adult stage and adult longevity were significantly different in the comparisons among treatments, in every kind of experiment, but in those using L3 larvae, their percentages were smaller. Observations of the time of larva and adult onset suggested...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Caffeine; Used coffee grounds; Mortality; Longevity; Esterases; Alternative control.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400004
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Enzymatic variability in Aedes aegypti (Diptera: Culicidae) populations from Manaus-AM, Brazil Genet. Mol. Biol.
Fraga,Elmary da Costa; Santos,Joselita Maria Mendes dos; Maia,Juracy de Freitas.
Eighteen enzymatic loci were analysed in Aedes aegypti populations from four neighbourhoods in the city of Manaus. The analyses showed that the Downtown population was the most polymorphic (p = 55.6%) with higher observed and expected mean heterozygosities (Ho = 0.152 ± 0.052; He = 0.174 ± 0.052, respectively). The least variability was detected in the Coroado and Cidade Nova populations, both with polymorphism of 44.4%. The latter population presented the least observed heterozygosity (Ho = 0.109 ± 0.037). Wright's F statistics showed that the mean value of Fis was higher than that of Fst (Fis = 0.164 > Fst = 0.048), and from analysis of molecular variance (AMOVA) it was found that 95.12% of the variability is found within populations indicating a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Electrophoreses; Isozymes; Populations genetics.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000200011
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Evaluation of embryotoxic and embryostatic effects of the aqueous extract of Rhizophora mangle and tannic acid on eggs and larvae of Aedes aegypti Anais da ABC (AABC)
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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Evaluation of toxic effects with transition metal ions, EDTA, SBTI and acrylic polymers on Aedes aegypti (L., 1762) (Diptera: Culicidae) and Artemia salina (artemidae) BABT
Arruda,Eduardo José de; Rossi,Ana Paula Leão; Porto,Karla Rejane de Andrade; Oliveira,Lincoln Carlos Silva de; Arakaki,Andrea Haruko; Scheidt,Gessiel Newton; Soccol,Carlos Ricardo.
This work aimed to evaluate the toxicity of some insecticides compounds on Aedes aegypti and Artemia salina larvae. Bioassays were carried out to evaluate the toxic effect after of 24 and 72 h using the compounds or associations. The LC10, LC50 and LC90 values were obtained and utilized for toxicity comparations. For Ae. aegypti, LC50 were 32.65 mg L-1 in 24 h for Na2[EDTA-Cu(II)] and total mortality in 72 h for SAP-Na2[EDTA-Cu(II)].
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insect control; Aedes aegypti; Artemia salina.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200012
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Evidence of two lineages of the dengue vector Aedes aegypti in the Brazilian Amazon, based on mitochondrial DNA ND4 gene sequences Genet. Mol. Biol.
Lima Júnior,Raimundo Sousa; Scarpassa,Vera Margarete.
Genetic variation was estimated in ten samples populations of Aedes aegypti from the Brazilian Amazon, by using a 380 bp fragment of the mitochocondrial NADH dehydrogenase subunit 4 (ND4) gene. A total of 123 individuals were analyzed, whereby 13 haplotypes were found. Mean genetic diversity was slightly high (h = 0.666 ± 0.029; π = 0.0115 ± 0.0010). Two AMOVA analyses indicated that most of the variation (~70%-72%) occurred within populations. The variation found among and between populations within the groups disclosed lower, but even so, highly significant values. F ST values were not significant in most of the comparisons, except for the samples from Pacaraima and Rio Branco. The isolation by distance (IBD) model was not significant (r = 0.2880; p =...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Dengue vector; Genetic structure; Gene flow; Brazilian Amazon; Genetic lineages.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200032
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First record of Aedes aegypti (L.) (Diptera: Culicidae) infected by the parasite Ascogregarina culicis (Ross) (Apicomplexa: Lecudinidae) in Argentina Entomología
Dellapé,Mariana E.; Marti,Gerardo A.; Tranchida,María C.; García,Juan J..
In a survey for parasites and pathogens of Aedes aegypti conducted in La Plata, Argentina, an aseptate gregarine was found parasitizing larvae, pupae and adults of this mosquito species. This gregarine species was identified as Ascogregarina culicis based on the morphology and size of gamonts, gametocysts and oocysts. It is the first record of gregarine infections in culicids from Argentina.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Gregarine; Ascogregarina culicis; Aedes aegypti.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0328-03812005000100009
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Genetic variability in geographical populations of Aedes aegypti (Diptera, Culicidae) in Brazil elucidated by molecular markers Genet. Mol. Biol.
Paduan,Karina dos Santos; Araújo-Júnior,João P.; Ribolla,Paulo E.M..
The tropical mosquito, Aedes aegypti is the most important domestic vector of urban yellow fever and dengue. Genetic population studies on this vector are important because they may lead to new tools for surveillance. An analysis of genetic structure was conducted among populations of A. aegypti from 11 localities in four demographic regions within six Brazilian federal states. Markers included 21 random amplified polymorphic DNA (RAPD) loci. RAPD markers were detected among populations and cluster analysis revealed two main groups. We found high genetic polymorphism (H S = 0.224) and high levels of genetic differentiation between populations from different states (G ST = 0.430), as well as in populations from cities in the same state (G ST = 0.410). These...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Population genetics; Random amplified polymorphic DNA; Genetic variability.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200030
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Genetic variability of a population of Aedes aegypti from Paraná, Brazil, using the mitochondrial ND4 gene Rev. Bras. entomol.
Twerdochlib,Adriana L.; Bonna,Ana C. Dalla; Leite,Selene S.; Chitolina,Rodrigo F.; Westphal,Betina; Navarro-Silva,Mario A..
Genetic variability of a population of Aedes aegypti from Paraná, Brazil, using the mitochondrial ND4 gene. To analyze the genetic variability of populations of Aedes aegypti, 156 samples were collected from 10 municipalities in the state of Paraná, Brazil. A 311 base pairs (bp) region of the NADH dehydrogenase subunit 4 (ND4) mitochondrial gene was examined. An analysis of this fragment identified eight distinct haplotypes. The mean genetic diversity was high (h = 0.702; p = 0.01556). AMOVA analysis indicated that most of the variation (67%) occurred within populations and the F ST value (0.32996) was highly significant. F ST values were significant in most comparisons among cities. The isolation by distance was not significant (r = -0.1216 and p = 0,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Genetic variability; Mitochondrial DNA; Genetic population; State of Paraná.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000200013
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Geração de mapas e espacialização das notificações da dengue: uma contribuição da Embrapa para o enfrentamento do mosquito Aedes aegypti no Município de Campinas, SP Infoteca-e
OSHIRO, O. T.; CARVALHO, C. A. de; MIRANDA, E. E. de.
Esta publicação tem por objetivo ser um manual com as orientações necessárias para espacializar as notificações de casos de dengue existentes no Sistema de Informação de Agravos de Notificação (Sinan) do Ministério da Saúde por meio do uso de um recorte municipal disponível nas secretarias de saúde municipais. A partir de um estudo de caso no Município de Campinas, o documento aborda aspectos conceituais, software e sistemas de informações geográficas (SIGs) necessários para gerar as espacializações das notificações, além de um passo a passo para construir as análises espaciais sobre os pontos de notificações de dengue e gerar mapas de distribuição e concentração dos casos de dengue em um município. Uma contribuição esperada com esse manual é proporcionar...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Monitoramento territorial urbano; Produção de mapas de risco; Planejamento urbano; Estudo de caso; Planejamento; Saúde pública; Aedes aegypti; Dengue.
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1064580
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Identification of Zika virus in immature phases of Aedes aegypti and Aedes albopictus: a surveillance strategy for outbreak anticipation BJMBR
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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Inovação no combate à dengue. Infoteca-e
EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA..
bitstream/item/109238/1/fold07-17-inovacaoCombateDengue.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Combate; Bioinseticida.; Controle Biológico.; Aedes aegypti; Biological control; Dengue..
Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/189835
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