New mosquito records (Diptera: Culicidae) from northwestern Argentina

The geographic distributions of Aedes casali, Ae. meprai, Culex acharistus, Cx. bidens, Cx. coronator, Cx. dolosus, Cx. saltanensis, Cx. imitator, Haemagogus janthinomys and Psorophora cyanescens are extended. This contribution updates the mosquito fauna listed for Argentina, increasing the number of species for the provinces of Jujuy, La Rioja and Santiago del Estero from 55 to 62, 22 to 25 and 25 to 26, respectively. Data on collection localities, habitat of immature stages, and health importance are also presented.Fil: Linares, Mario Alfredo. Universidad Nacional de Jujuy. Instituto de Biología de la Altura. Departamento de Entomologia; ArgentinaFil: Laurito, Magdalena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; ArgentinaFil: Visintin, Andrés Mario. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; Argentina. Universidad Nacional de la Rioja; ArgentinaFil: Rossi, Gustavo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Stein, Marina. Universidad Nacional del Nordeste. Instituto de Medicina Regional. Área de Entomología; ArgentinaFil: Almiron, Walter Ricardo. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentin

New records of mosquito species (Diptera: Culicidae) from Catamarca and Santa Fe provinces, Argentina

RESUMEN. Se extiende la distribución geográfica de Culex acharistus, C. bidens, C. chidesteri, C. dolosus, C. interfor, C. maxi, C. saltanensis y Ochlerotatus scapu- laris, incrementando el número de especies de mosquitos citadas de las provincias de Catamarca, de 14 a 20, y de Santa Fe, de 57 a 59.ABSTRACT. The geographical distribution of Culex acharistus, C. bidens, C. chidesteri, C. dolosus, C. interfor, C. maxi, C. saltanensis and Ochlerotatus scapu- laris is extended, increasing the number of mosquito species in the provinces of Catamarca, from 14 to 20, and Santa Fe, from 57 to 59.Fil: Laurito, Magdalena. Universidad Nacional de Cordoba. Facultad de Cs.exactas Fisicas y Naturales. Centro de Invest.Entomologicas de Cba; Argentina; Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Cordoba. Instituto de Investigaciones Biologicas y Tecnologicas, Argentina;Fil: Visintin, Andrés Mario. Universidad Nacional de la Rioja; Argentina;Fil: Lorenzo, Pablo R.. Universidad Nacional de la Rioja; Argentina;Fil: Berrón, Clara Inés. Universidad Nacional de Cordoba. Facultad de Medicina. Instituto de Virología; Argentina;Fil: Diez, Natalia. Universidad Nacional del Litoral; Argentina;Fil: Almiron, Walter Ricardo. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Cordoba. Instituto de Investigaciones Biologicas y Tecnologicas, Argentina

Of arthropods and plants: Arthropod fauna diversity in a vegetation gradient in Los Llanos of La Rioja province (Argentina)

Dado el rol fundamental de los artrópodos y los insectos en el funcionamiento de los ecosistemasáridos, para manejar estos ambientes resulta necesario conocer su relación con las características de la vegetación local. Dentro de la región fitogeográfica del Chaco, en Los Llanos de la provincia de La Rioja, Argentina, existen grandes cambios en la vegetación en distancias cortas, lo que determina un gradiente de heterogeneidad vegetal. El objetivo de este estudio fue analizar la respuesta de los artrópodos epígeos a estos cambios. En este gradiente se seleccionaron 3 ambientes (Salinas, Interfaz y Monte) en los que se recolectaron artrópodos y, dentro de éstos, insectos mediante trampas de caída durante 7 días en la temporada cálida. Se determinó la abundancia total de artrópodos e insectos y la riqueza de especies/morfoespecies de insectos. Se evaluó la asociación entre los ambientes y la abundancia y riqueza de especies mediante un ANOVA de medidas repetidas. Para evaluar la completitud del muestreo se utilizaron estimadores de riqueza no-paramétricos (Chao1, Jackniffe1 y Bootstrap) y curvas de acumulación de especies. Para evaluar la estructura de la comunidad se usaron curvas de rango-abundancia y análisis multivariados. Se recolectaron en total 8380 artrópodos, de los cuales 5902 fueron insectos que se agruparon en 14 órdenes, 31 superfamilias, 35 familias y 114 especies/morfoespecies. El ambiente con mayor heterogeneidad vegetal (Monte) presentó la mayor abundancia de artrópodos y la mayor abundancia y riqueza de insectos. Las familias de insectos más abundantes y de mayor riqueza fueron Formicidae (Hymenoptera) y Tenebrionidae (Coleoptera). Chao1 y Bootstrap fueron los mejores estimadores deriqueza. En este estudio se encontró que la abundancia, la riqueza y la composición de especies de artrópodos, y particularmente insectos, estuvo asociada a un gradiente de vegetaciónGiven the fundamental role of arthropods and insects in the functioning of arid ecosystems, it is of key importance to understand their relationships with the environment, particularly for the development of future conservation efforts. Within the phytogeographic region of Chaco, in Los Llanos (La Rioja province, Argentina), great changes in vegetation occur within short distances, determining a pronounced gradient of plant heterogeneity. The aim of this study was to analyse the response of epigaeic arthropods to these changes. In this gradient, three environments were selected (Salinas, Interface and Monte), in which we collected arthropods and insects using fall traps during seven days during the warm season. Total abundance of arthropods and insects, and richness of insect species/morpho-species were determined. The association between the environments and the abundance and richness of species was evaluated by repeated measurements ANOVA. Nonparametric richness estimators (Chao1, Jackniffe1 and Bootstrap) and their species accumulation curves were used to test sampling completeness. To assess the structure of the insect community we used range-abundance curves and multivariate analysis. A total 8380 arthropods was collected, of which 5902 were insects grouped into 14 orders, 31 superfamilies, 35 families and 114 species/morphospecies. The environment with the greatest plant heterogeneity (Monte) presented the greatest abundance of arthropods and the greatest abundance and richness of insects. The most abundant and richest insect families were Formicidae (Hymenoptera) and Tenebrionidae (Coleoptera). Chao1 and Bootstrap were the best richness estimators. In this study, we found that the abundance, richness and composition of arthropod species, particularly insects, were associated to a vegetation gradient.Fil: Baudino, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio de Ecotono; ArgentinaFil: Cecchetto, Nicolas Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio de Ecotono; ArgentinaFil: Buffa, Liliana M.. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; ArgentinaFil: Visintin, Andrés Mario. Universidad Nacional de La Rioja. Secretaría de Ciencia y Tecnología. Centro de Investigación e Innovación Tecnológica; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; Argentin

Actualización de la distribución geográfica y nuevos registros de la fauna de Culicidae (Diptera) del Noroeste Argentino

The knowledge about the geographical distribution of Aedes patersoni Shanon and Del Ponte, Ae. scapularis (Rondani), Culex dolosus (Lynch Arribálzaga), Mansonia indubitans Dyar and Shannon, Psorophora cingulata (Fabricius), Toxorhynchites haemorrhoidalis separatus (Lynch Arribálzaga), Tx. purpureus (Theobald), Tx. theobaldi s. l. Dyar & Knab and Uranotaenia lowii Theobald in the Northwest of Argentina is extended. Likewise, they provided the first known localities for Ma. indubitans in the province of Salta and for Ae. serratus (Theobald), Ma. titillans (Walker) and Ps. ciliata (Fabricius) in the province of Jujuy. The presence of Ae. fulvithorax (Lutz), Ps. pallescens Edwards in Jujuy, Ur. pulcherrima Lynch Arribálzaga in Santiago del Estero and Anopheles pictipennis (Philippi) in Argentina, is discussed. This contribution updates the list of mosquitoes for the northwestern provinces of Argentina, increasing their numbers of species in Jujuy, La Rioja, Salta, Santiago del Estero and Tucumán to 68, 26, 102, 29 and 70 species, respectively. Additionally, information on the habitat of immature stages and the sanitary importance of the species mentioned is provided, as well as a complete list of the species present in the northwestern provinces of Argentina.Se amplía el conocimiento sobre la distribución geográfica de Aedes patersoni Shanon y Del Ponte, Ae. scapularis (Rondani), Culex dolosus (Lynch Arribálzaga), Mansonia indubitans Dyar y Shannon, Psorophora cingulata (Fabricius), Toxorhynchites haemorrhoidalis separatus (Lynch Arribálzaga), Tx. purpureus (Theobald), Tx. theobaldi s. l. Dyar & Knab y Uranotaenia lowii Theobald en el Noroeste de Argentina. Asimismo, brindan las primeras localidades conocidas para Ma. indubitans en la provincia de Salta y para Ae. serratus (Theobald), Ma. titillans (Walker) y Ps. ciliata (Fabricius) en la provincia de Jujuy. Se discute sobre la presencia de Ae. fulvithorax (Lutz) en la provincia de Salta, de Ps. pallescens Edwards en la provincia de Jujuy, de Ur. pulcherrima Lynch Arribálzaga en Santiago del Estero y de Anopheles pictipennis (Philippi) en Argentina. Esta contribución actualiza la lista de mosquitos para las provincias del noroeste argentino, incrementando su número en Jujuy, La Rioja, Salta, Santiago del Estero y Tucumán a 68, 26, 102, 29 y 70 especies, respectivamente. Adicionalmente, se aporta información sobre el hábitat en el que se recolectaron y la importancia sanitaria de las especies mencionadas, así como una lista completa de las especies presentes en las provincias del noroeste argentino.Fil: Apumaita, Jorgelina María del Rosario. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; ArgentinaFil: Linares, Mario Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; ArgentinaFil: Molina, Gustavo Ariel. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Superior de Entomología; ArgentinaFil: Visintin, Andrés Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Rossi, Gustavo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Stein, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional del Nordeste. Instituto de Medicina Regional; ArgentinaFil: Siches, Julieta Ailen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Almiron, Walter Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentin

New mosquito records (Diptera: Culicidae) from northwestern Argentina

The geographic distributions of Aedes casali, Ae. meprai, Culex acharistus, Cx. bidens, Cx. coronator, Cx. dolosus, Cx. saltanensis, Cx. imitator, Haemagogus janthinomys and Psorophora cyanescens are extended. This contribution updates the mosquito fauna listed for Argentina, increasing the number of species for the provinces of Jujuy, La Rioja and Santiago del Estero from 55 to 62, 22 to 25 and 25 to 26, respectively. Data on collection localities, habitat of immature stages, and health importance are also presented.Centro de Estudios Parasitológicos y de Vectore

Phlebotominae (Diptera: psycodidae) fauna in the Chaco region and Cutaneous Leishmaniasis transmission patterns in Argentina

In Argentina, the incidence of American Cutaneous Leishmaniasis (ACL) has shown a steady increase over the last few decades. In the Chaco biogeographical region, specifically, several outbreaks of ACL were recently reported in addition to the usual time-space scattering of ACL cases. However, little is known about the sandfly composition in the eastern, humid Chaco (HC) region or the western, dry Chaco (DC) region. Therefore, phlebotomine captures were performed throughout this region and an analysis of the distribution of reported ACL cases was conducted in order to assess the vector diversity in ACL endemic and epidemic scenarios in the Chaco region. The results support the hypothesis of two distinct patterns: (1) the DC, where Lutzomyia migonei was the most prevalent species, had isolated ACL cases and a zoonotic cycle; (2) the HC, where Lutzomyia neivai was the most prevalent species, had an increase in ACL incidence and outbreaks and an anthropozoonotic cycle. The epidemic risk in the Chaco region may be associated with the current climate trends, landscape modification, connection with other ACL foci, and Lu. neivai predominance and abundance. Therefore, changes in sandfly population diversity and density in the Chaco region are an indicator of emergent epidemic risk in sentinel capture sites.Facultad de Ciencias Naturales y Muse

Phlebotominae (Diptera: psycodidae) fauna in the Chaco region and Cutaneous Leishmaniasis transmission patterns in Argentina

In Argentina, the incidence of American Cutaneous Leishmaniasis (ACL) has shown a steady increase over the last few decades. In the Chaco biogeographical region, specifically, several outbreaks of ACL were recently reported in addition to the usual time-space scattering of ACL cases. However, little is known about the sandfly composition in the eastern, humid Chaco (HC) region or the western, dry Chaco (DC) region. Therefore, phlebotomine captures were performed throughout this region and an analysis of the distribution of reported ACL cases was conducted in order to assess the vector diversity in ACL endemic and epidemic scenarios in the Chaco region. The results support the hypothesis of two distinct patterns: (1) the DC, where Lutzomyia migonei was the most prevalent species, had isolated ACL cases and a zoonotic cycle; (2) the HC, where Lutzomyia neivai was the most prevalent species, had an increase in ACL incidence and outbreaks and an anthropozoonotic cycle. The epidemic risk in the Chaco region may be associated with the current climate trends, landscape modification, connection with other ACL foci, and Lu. neivai predominance and abundance. Therefore, changes in sandfly population diversity and density in the Chaco region are an indicator of emergent epidemic risk in sentinel capture sites.Facultad de Ciencias Naturales y Muse

Phlebotominae (Diptera: Psycodidae) fauna in the Chaco region and Cutaneous Leishmaniasis transmission patterns in Argentina

In Argentina, the incidence of American Cutaneous Leishmaniasis (ACL) has shown a steady increase over the last few decades. In the Chaco biogeographical region, specifically, several outbreaks of ACL were recently reported in addition to the usual time-space scattering of ACL cases. However, little is known about the sandfly composition in the eastern, humid Chaco (HC) region or the western, dry Chaco (DC) region. Therefore, phlebotomine captures were performed throughout this region and an analysis of the distribution of reported ACL cases was conducted in order to assess the vector diversity in ACL endemic and epidemic scenarios in the Chaco region. The results support the hypothesis of two distinct patterns: (1) the DC, where Lutzomyia migonei was the most prevalent species, had isolated ACL cases and a zoonotic cycle; (2) the HC, where Lutzomyia neivai was the most prevalent species, had an increase in ACL incidence and outbreaks and an anthropozoonotic cycle. The epidemic risk in the Chaco region may be associated with the current climate trends, landscape modification, connection with other ACL foci, and Lu. neivai predominance and abundance. Therefore, changes in sandfly population diversity and density in the Chaco region are an indicator of emergent epidemic risk in sentinel capture sites

Fecundity of Ochlerotatus albifasciatus (Diptera: Culicidae) from Córdoba, Argentina

Seasonal differences in the number and length of gonotrophic cycles of Ochlerotatus albifasciatus were determined in a temperate area of Argentina, in addition to analysis on number of eggs laid by females corresponding to the number of bloodfeedings per gonotrophic cycle throughout the year. Landing females were collected by using human bait and mechanical aspirators along the southwestern coast of Mar Chiquita Lake (in northeastern Córdoba Province) from February to November 2000. Collected females were kept in captivity under natural weather conditions, fed on a sugar solution (10%), and provided blood via a human host by different methods (treatment A: 1 bloodfeeding/gonotrophic cycle and treatment B: 2 or 3 bloodfeedings/gonotrophic cycle). A maximum of 5 gonotrophic cycles (average 2.24 +/- 1.11) were determined by dissecting ovarioles. The gonotrophic cycles were longer in females of treatment B (11.23 +/- 4.06 days) than those of treatment A (9.02 +/- 5 days). Females that completed the highest number of cycles were collected in winter and during the beginning of spring. The average number of eggs laid in each cycle was 90 (SD = 37.85) for treatment B females and 80 (SD = 29.99) for those of treatment A, with significant differences between treatments. Considering both treatments, the number of eggs laid was significantly higher after 3 blood meals than with 1 or 2 feedings. These results suggest that an increase in the number of feedings would lengthen the cycle and increase the production of eggs. No correlation was found relating to temperature and the length of the cycles, which suggests that the number of blood meals may be the determining factor in seasonal variations in egg production.Fil: Visintin, Andrés Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; ArgentinaFil: Almiron, Walter Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; ArgentinaFil: Ludueña Almeida, Francisco. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones Entomológicas de Córdoba; Argentin