Geographical limits of the Southeastern distribution of <i>Aedes aegypti</i> (Diptera, Culicidae) in Argentina

Aedes aegypti (Linnaeus) is a human-biting mosquito and the primary vector of human dengue and yellow fever viruses; it is also considered the principal vector of Chikungunya virus in Asia. In particular, dengue and dengue hemorrhagic fever constitute an important burden to humankind in terms of morbidity and mortality. About 3.6 billion people in the tropics, mainly in Asia, the Western Pacific region, the Caribbean, and Central and South America, live under risk of infection with one or more of the four dengue virus serotypes (DEN-1 to DEN-4), and recent reports estimate over 230 million infections, over 2 million cases of the severe form of the disease, and 21,000 deaths. (Párrafo extraído del texto a modo de resumen)Facultad de Ciencias Naturales y Muse

Geographical limits of the Southeastern distribution of <i>Aedes aegypti</i> (Diptera, Culicidae) in Argentina

Aedes aegypti (Linnaeus) is a human-biting mosquito and the primary vector of human dengue and yellow fever viruses; it is also considered the principal vector of Chikungunya virus in Asia. In particular, dengue and dengue hemorrhagic fever constitute an important burden to humankind in terms of morbidity and mortality. About 3.6 billion people in the tropics, mainly in Asia, the Western Pacific region, the Caribbean, and Central and South America, live under risk of infection with one or more of the four dengue virus serotypes (DEN-1 to DEN-4), and recent reports estimate over 230 million infections, over 2 million cases of the severe form of the disease, and 21,000 deaths. (Párrafo extraído del texto a modo de resumen)Facultad de Ciencias Naturales y Muse

Geographical limits of the Southeastern distribution of <i>Aedes aegypti</i> (Diptera, Culicidae) in Argentina

Aedes aegypti (Linnaeus) is a human-biting mosquito and the primary vector of human dengue and yellow fever viruses; it is also considered the principal vector of Chikungunya virus in Asia. In particular, dengue and dengue hemorrhagic fever constitute an important burden to humankind in terms of morbidity and mortality. About 3.6 billion people in the tropics, mainly in Asia, the Western Pacific region, the Caribbean, and Central and South America, live under risk of infection with one or more of the four dengue virus serotypes (DEN-1 to DEN-4), and recent reports estimate over 230 million infections, over 2 million cases of the severe form of the disease, and 21,000 deaths.\n(Párrafo extraído del texto a modo de resumen)</i

Geographical limits of the Southeastern distribution of <i>Aedes aegypti</i> (Diptera, Culicidae) in Argentina

Aedes aegypti (Linnaeus) is a human-biting mosquito and the primary vector of human dengue and yellow fever viruses; it is also considered the principal vector of Chikungunya virus in Asia. In particular, dengue and dengue hemorrhagic fever constitute an important burden to humankind in terms of morbidity and mortality. About 3.6 billion people in the tropics, mainly in Asia, the Western Pacific region, the Caribbean, and Central and South America, live under risk of infection with one or more of the four dengue virus serotypes (DEN-1 to DEN-4), and recent reports estimate over 230 million infections, over 2 million cases of the severe form of the disease, and 21,000 deaths. (Párrafo extraído del texto a modo de resumen)Facultad de Ciencias Naturales y Muse

Distribution of mosquitoes in the South East of Argentina and first report on the analysis based on 18S rDNA and COI sequences

Although Mar del Plata is the most important city on the Atlantic coast of Argentina, mosquitoes inhabiting such area are almost uncharacterized. To increase our knowledge in their distribution, we sampled specimens of natural populations. After the morphological identification based on taxonomic keys, sequences of DNA from small ribosomal subunit (18S rDNA) and cytochrome c oxidase I (COI) genes were obtained from native species and the phylogenetic analysis of these sequences were done. Fourteen species from the genera Uranotaenia, Culex, Ochlerotatus and Psorophora were found and identified. Our 18S rDNA and COI-based analysis indicates the relationships among groups at the supra-species level in concordance with mosquito taxonomy. The introduction and spread of vectors and diseases carried by them are not known in Mar del Plata, but some of the species found in this study were reported as pathogen vectors

Predominant methanogenic metabolism in a UASB digester fed with vinasse in Tucumán, Argentina

Los efluentes líquidos producidos por las destilerías de alcohol asociadas a ingenios azucareros en el Noroeste argentino son una fuente de contaminación si son vertidas en forma inadecuada en las cuencas hídricas. La generación de efluentes de este tipo crece con la demanda de bioetanol tanto en Argentina como en el mundo. En la depuración de los mismos, los reactores de tipo UASB son una solución integral dado que agregan el valor de la producción biogás. Por medio del secuenciado de fragmentos ribosomales del metagenoma de un reactor de tipo UASB a escala piloto (200 L), analizamos la comunidad de archaeas del mismo. Este estudio pretende contribuir a la determinación de las condiciones operativas de funcionamiento del digestor para maxiumizar la depuración de la carga orgánica de los efluentes y la generación asociada de biogás. La metodología incluyó extracción del metagenoma, su amplificación por medio de primers universales para procariotas dirigidos al dominio V4 del gen 16SrDNA y su posterior secuenciado usando la tecnología de pirosecuenciado. Nuestros resultados indican que en el digestor alimentado con vinazas estudiado, la metanogénesis se debe a la combinación de metabolismos hidrogenotrópico y acetogénico. Dado que los estudios de rarefracción indicaron una cobertura de la diversidad insuficiente, se realizan nuevos análisis con cambios en los protocolos de extracción y purificación de ADN y en las estrategias de secuenciado. Con relación a Eubacteria, resultó llamativa la proporción de Verrucomicrobiales, cercana al 18%. Esta proporción de metanótrofos puede indicar irregularidades en el mantenimiento del régimen del digestor. Estudios sobre este grupo bacteriano en particular podrían usarse como parámetro de eficiencia en el mantenimiento del consorcio microbiano.Asociación de Universidades Grupo Montevide

Integral process assessment of sugarcane agricultural crop residues conversion to ethanol

This work focuses a whole process assessment on post-harvesting sugarcane residues for 2G ethanol production by different saccharification-fermentation conditions at high solids loading, performed after steam explosion, alkaline and acidic pretreatments. Carbohydrate recoveries and enzymatic digestibility results showed that alkali and steam explosion pretreatments were effective for the biomass assayed. Due to a significant improvement (60%) of the glucose released by combining hemicellulases and cellulases only after the NaOH pretreatment, the most favorable process settled comprised an alkali-based pretreatment followed by a pre-saccharification and simultaneous saccharification and fermentation (PSSF). The produced ethanol reached 4.8% (w/w) as a result of an 80% conversion of the glucose from the pretreated biomass. Finally, an ethanol concentration of 3.2% (w/w) was obtained by means of a steam explosion followed by PSSF, representing a suitable start point to further develop a low environmental impact alternative for ethanol production.Fil: Manfredi, Adriana Paola. Universidad Nacional de Tucumán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Ballesteros, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Sáez, Felicia. Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas; EspañaFil: Perotti, Nora Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Martinez, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Negro, María José. Universidad Nacional de Tucumán; Argentin

Performance of Lactobacillus paracasei 90 as an adjunct culture in soft cheese under cold chain interruption

In this work, we simulated cold chain interruptions in soft cheeses of high-moisture to assess their impact on ripening, putting attention on the behaviour of an adjunct culture of Lactobacillus paracasei 90 (L90) when it was added. Temperature variation did not change starter culture levels but it significantly increased L90 population at 60 days in cheeses with cold chain interruption. Cold chain interruptions and adjunct culture led to an increase of the proteolysis levels and produced changes in the carbohydrate fermentation, volatile compounds profiles and sensory scores. In cheeses with cold chain interruptions, L90 did not cause any defects and maintained its capacity of improving flavour and odour intensities by increasing the levels of diacetyl and acetoin, and decreasing pungent taste and compounds associated with rancidity. In addition, samples with adjunct culture presented increased levels of lactic acid without being perceived as a defect by the sensory panel.EEA RafaelaFil: Peralta, Guillermo H. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; ArgentinaFil: Bergamini, Carina Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; ArgentinaFil: Costabel, Luciana Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Audero, Gabriela Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Ale, E.C. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; ArgentinaFil: Binetti, A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; ArgentinaFil: Wolf, I. Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; ArgentinaFil: Cuatrin, Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Nieto, I. Instituto Nacional de Tecnología Industrial (INTI Lácteos Rafaela); ArgentinaFil: Perotti, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; ArgentinaFil: Hynes, Erica Rut. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; Argentin

Phylogenetic estimation by Maximum Likelihood.

<p>A, Using 18S rDNA; B, COI coding-sequence. 500 replicates have been used in the estimation. Arrows indicates local mosquito species.</p