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Search Results: 1 - 10 of 603001 matches for " María C.; Oscherov "
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Comunidad de escarabajos copronecrófagos (Coleoptera: Scarabaeidae) en dos bosques del Chaco Oriental Húmedo, Argentina
Damborsky,Miryam P.; Bar,María E.; álvarez Bohle,María C.; Oscherov,Elena B.;
Revista de la Sociedad Entomol?3gica Argentina , 2008,
Abstract: scarabaeinae community structure was compared in two habitats with different degrees of conservation: a native forest at pampa del indio provincial park, and a forest fragment at los alisos cattle farm. pitfall traps baited with carrion and cattle dung were left open for 72-hour periods in october, november and december 2006. 769 adults belonging to six tribes, 11 genera and 26 species were captured in all. at los alisos, ontherus sulcatus fabricius and onthophagus hirculus mannerheim were the dominant species. trichillum sp., canthon podagricus harold, malagoniella sp., gromphas lacordairei brullé, and two dichotomius hope species were only found at los alisos, whereas canthon septemmaculatus latreille and coprophanaeus jasius olivier were exclusively collected in pampa del indio. number of individuals and diversity were significantly higher at pampa del indio. the same proportions of coprophagous and necrophagous species were captured at los alisos, with most having endocoprid and paracoprid habits. pampa del indio was characterized by the presence of rollers and necrophagous species. this research is the first study of forest scarabaeinae biodiversity in chaco province.
Comunidad de escarabajos copronecrófagos (Coleoptera: Scarabaeidae) en dos bosques del Chaco Oriental Húmedo, Argentina Copro-necrophagous beetle community (Coleoptera: Scarabaeidae) in two forests from Eastern Humid Chaco, Argentina
Miryam P. Damborsky,María E. Bar,María C. álvarez Bohle,Elena B. Oscherov
Revista de la Sociedad Entomol?3gica Argentina , 2008,
Abstract: Se investigó y comparó la estructura de la comunidad de Scarabaeinae en dos ambientes con distinto grado de conservación. Se efectuaron muestreos en un bosque nativo del Parque Provincial Pampa del Indio y en un fragmento de bosque del establecimiento ganadero Los Alisos. Los ejemplares se capturaron con coprotrampas y necrotrampas que permanecieron activas durante 72 horas, en los meses de octubre, noviembre y diciembre de 2006. Se colectaron 769 individuos adultos pertenecientes a seis tribus, 11 géneros y 26 especies. En Los Alisos Ontherus sulcatus Fabricius y Onthophagus hirculus Mannerheim resultaron dominantes. Trichillum sp., Canthon podagricus Harold, Malagoniella sp., Gromphas lacordairei Brullé, y dos especies de Dichotomius Hope fueron exclusivas de este establecimiento. Canthon septemmaculatus Latreille y Coprophanaeus jasius Olivier sólo se colectaron en Pampa del Indio. El número de individuos y la diversidad alcanzaron valores significativamente superiores en Pampa del Indio. En Los Alisos, se constató igual proporción de coprófagos y necrófagos, y una mayoría de especies con hábitos endocópridos y paracópridos. En Pampa del Indio, se encontraron más especies de hábitos necrófagos y rodadores. La presente contribución constituye el primer estudio sobre la biodiversidad de Scarabaeinae en el ambiente de bosque de la provincia del Chaco. Scarabaeinae community structure was compared in two habitats with different degrees of conservation: a native forest at Pampa del Indio Provincial Park, and a forest fragment at Los Alisos cattle farm. Pitfall traps baited with carrion and cattle dung were left open for 72-hour periods in October, November and December 2006. 769 adults belonging to six tribes, 11 genera and 26 species were captured in all. At Los Alisos, Ontherus sulcatus Fabricius and Onthophagus hirculus Mannerheim were the dominant species. Trichillum sp., Canthon podagricus Harold, Malagoniella sp., Gromphas lacordairei Brullé, and two Dichotomius Hope species were only found at Los Alisos, whereas Canthon septemmaculatus Latreille and Coprophanaeus jasius Olivier were exclusively collected in Pampa del Indio. Number of individuals and diversity were significantly higher at Pampa del Indio. The same proportions of coprophagous and necrophagous species were captured at Los Alisos, with most having endocoprid and paracoprid habits. Pampa del Indio was characterized by the presence of rollers and necrophagous species. This research is the first study of forest Scarabaeinae biodiversity in Chaco province.
Detección de triatominos (Hemiptera: Reduviidae) en ambientes domésticos y extradomésticos. Corrientes, Argentina
Damborsky, Miryam Pieri;Bar, María Esther;Oscherov, Elena Beatriz;
Cadernos de Saúde Pública , 2001, DOI: 10.1590/S0102-311X2001000400018
Abstract: in order to identify intra- and extra-domiciliary triatomines, a study in different counties of corrientes province, argentina, was conducted from 1985 to 1995. triatoma infestans (klug, 1834), triatoma sordida (st?l, 1859), panstrongylus geniculatus (latreille, 1811), and panstrongylus megistus (burmeister, 1835) were detected in domestic ecotopes. t. infestans and t. sordida were also found in the peridomicile. triatoma platensis (neiva, 1913), psammolestes coreodes (bergroth, 1911), t. sordida, and triatoma rubrovaria (blanchard, 1843) were collected in sylvatic biotopes. t. infestans was confirmed as the predominant species in the domestic environment and was the only species infected with trypanosoma cruzi-like parasites. t. sordida was most frequent in extra-domiciliary ecotopes, but could be considered capable of colonizing human dwellings.
Contaminación por parásitos caninos de importancia zoonótica en playas de la ciudad de Corrientes, Argentina
MILANO,ALICIA MARíA FRANCISCA; OSCHEROV,ELENA BEATRIZ;
Parasitología latinoamericana , 2002, DOI: 10.4067/S0717-77122002000300006
Abstract: the present investigation was carried out with the aim to evaluating the presence canine nematoda parasites in the beaches of the city of corrientes. one hundred and twenty three samples of canine faecal matter and three hundred and twenty four sand samples proceeding from six beach in the city were analysed. the samples were processed individually by the following methods: sedimentation through centrifugation and willis flotation. among the faeces samples 59.3% resulted to be positive. the species found were ancylostoma spp. (95.9%), trichuris vulpis (22%), toxocara canis (4.1%) and toxascaris leonina (2.7%). sand contamination was of a 32.7% and the observed species were ancylostoma spp. (100%) and t. canis (0.3%). the obtained results indicate the need of implementing sanitation environmental measures
Presencia de Triatoma sordida St?l, 1859 en ecotopos urbanos de la ciudad de Corrientes, Argentina
Bar,María E.; Oscherov,Elena B.; Damborsky,Miryam P.;
Revista de Saúde Pública , 1993, DOI: 10.1590/S0034-89101993000200007
Abstract: with the intention of verifying the presence of t. sordida st?l 1859 in urban ecotopes in corrientes city, argentina, both, human dwellings and an extradomiciliary habitat were taken as a basis. a complete t. sordida population census was carried on in mitre park pigeon house and 400 pigeon nests (columbia livia) were dissected. the triatomineos samples that had been detected in human dwellings were sent to the arthropods laboratory by their inhabitants. these triatomineos were classified systematically and according to their age class. their feces were examined under a microscope 400 x, so as to identify trypanosoma cruzi. six eggs, 45 first-instar nymphs, 110 second-instar nymphs, 226 third-instar nymphs, 303 fourth-instar nymphs, 1.103 fifth-instar nymphs, 12 females and 11 males were collected from the pigeon house. the presence of this species was verified in the 27 houses, situated in 8 different neighborhoods in the city; 13 eggs, 33 different instar nymphs, 27 females and 9 males were captured, 82 samples altogether. no triatomineo was infected by t. cruzi. t. sordida, adults moved towards the houses in spring and summer. of the material found in human dwellings 33% was female. the adaptation of t. sordida to extra-domestic habitats and their tenfency to invade human houses has thus been verified. this fact should be taken into account in vector control programs.
Contaminación por parásitos caninos de importancia zoonótica en playas de la ciudad de Corrientes, Argentina CONTAMINATION WITH DOGS PARASITES EGGS OF ZOONOTICAL IMPORTANCE IN SAND OF THE BEACHES OF THE CITY OF CORRIENTES, ARGENTINA
ALICIA MARíA FRANCISCA MILANO,ELENA BEATRIZ OSCHEROV
Parasitología latinoamericana , 2002,
Abstract: The present investigation was carried out with the aim to evaluating the presence canine nematoda parasites in the beaches of the city of Corrientes. One hundred and twenty three samples of canine faecal matter and three hundred and twenty four sand samples proceeding from six beach in the city were analysed. The samples were processed individually by the following methods: sedimentation through centrifugation and Willis flotation. Among the faeces samples 59.3% resulted to be positive. The species found were Ancylostoma spp. (95.9%), Trichuris vulpis (22%), Toxocara canis (4.1%) and Toxascaris leonina (2.7%). Sand contamination was of a 32.7% and the observed species were Ancylostoma spp. (100%) and T. canis (0.3%). The obtained results indicate the need of implementing sanitation environmental measures
Presencia de Triatoma sordida St l, 1859 en ecotopos urbanos de la ciudad de Corrientes, Argentina
Bar María E.,Oscherov Elena B.,Damborsky Miryam P.
Revista de Saúde Pública , 1993,
Abstract: Con el objeto de verificar la presencia de T. sordida St l 1859, en ecotopos urbanos de la ciudad de Corrientes, Argentina se tomaron como base un habitat extradomiciliario y la vivienda humana. En el palomar situado en el Parque Mitre fue realizado un censo completo de población de T. sordida para lo cual fueron disecados 400 nidos de paloma (Columbia livia). Los ejemplares de triatominos detectados en las viviendas fueron enviados por los pobladores al Laboratorio de Artrópodos. Los triatominos fueron determinados sistemáticamente y por clase de edad. La materia fecal de los mismos fue examinada al microscopio para la identificación del Trypanosoma cruzi. En el palomar se colectaron: 6 huevos, 45 ninfas de primer estadío, 110 ninfas de segundo estadío, 226 ninfas de tercer estadío, 303 ninfas de cuarto estadío, 1.103 ninfas de quinto estadío, 12 hembras y 11 machos. Se constató la presencia de esta especie en 27 viviendas localizadas en 8 barrios de la Ciudad. Se capturaron 13 huevos, 33 ninfas de diferentes estadíos, 27 hembras y 9 machos, totalizando 82 individuos. Ningún triatomino resultó infectado por T. cruzi. Los adultos de T. sordida se desplazaron hacia el domicilio en primavera y verano. Es de destacar que el 33% del material hallado en las viviendas correspondió a hembras. Se ha comprobado la adaptación de T. sordida a un habitat extradomiciliario y su tendencia a invadir la vivienda humana, hecho que se debería ser tenido en cuenta en los programas de control de vectores.
Diphyllobothriidae en cánidos de la ciudad de Corrientes, Argentina.
Milano, Alicia María Francisca y Oscherov, Elena Beatriz
REDVET , 2005,
Abstract: El objetivo del presente trabajo fue detectar formas parasitarias de Diphyllobothriidae en materia fecal de perros de la ciudad de Corrientes. Se tomó una muestra de cada una de las heces depositadas en las aceras de la ciudad, las que se conservaron por separado en frascos rotulados, con formol al 10 %. Cada muestra se procesó en forma individual mediante los métodos de sedimentación por centrifugación con agua y flotación de Willis, los preparados se ti eron con solución lugol y se observaron por duplicado. Para la identificación se utilizaron características cualitativas y morfométricas del huevo. Se analizaron 362 muestras de materia fecal canina, en 17 (4,7%) de las cuales se observó la presencia de abundantes huevos de Diphyllobothriidae los que son de color marrón claro, ovoides, presentan opérculo y mamelón y miden en promedio 67,8μ de largo por 35,6μ de ancho. Por primera vez se cita la presencia de Diphyllobothriidae en perros de la ciudad de Corrientes, se afirma la necesidad de ampliar las investigaciones sobre la taxonomía, biología y ecología del parásito para establecer su importancia en salud animal y humana.
Detección de triatominos (Hemiptera: Reduviidae) en ambientes domésticos y extradomésticos. Corrientes, Argentina
Damborsky Miryam Pieri,Bar María Esther,Oscherov Elena Beatriz
Cadernos de Saúde Pública , 2001,
Abstract: Esta investigación tiene como objetivo identificar los triatominos que predominan en ambientes domésticos y extradomésticos de diferentes departamentos de la Provincia de Corrientes mediante muestreos llevados a cabo desde 1985 hasta 1995. En los ecótopos domiciliarios se detectaron Triatoma infestans (Klug, 1834), Triatoma sordida (St l, 1859), Panstrongylus geniculatus (Latreille, 1811) y Panstrongylus megistus (Burmeister, 1835). T. infestans y T. sordida se hallaron también en ambientes peridomésticos. Triatoma platensis (Neiva, 1913), Psammolestes coreodes (Bergroth, 1911), T. sordida y Triatoma rubrovaria (Blanchard, 1843) se colectaron en biótopos silvestres. En los domicilios, se confirmó el predominio de T. infestans. Esta especie fue la única parasitada por tripanosomas cruziformes. Si bien T. sordida fue más frecuente en los ecótopos extradomésticos, se demostró su tendencia a colonizar los ambientes domésticos.
Triatomines Involved in Domestic and Wild Trypanosoma cruzi Transmission in Concepción, Corrientes, Argentina
Bar María Esther,Damborsky Miryam Pieri,Oscherov Elena Beatriz,Milano Alicia María Francisca
Memórias do Instituto Oswaldo Cruz , 2002,
Abstract: An entomological and serological survey was performed in three localities of the Department of Concepción, Province of Corrientes, Argentina in 1998 and 1999, to identify triatomines species involved in domestic and wild transmission of Chagas disease. Triatomines were collected by man/hour capture in 32 houses randomly selected and 44 nearby outdoor ecotopes. Trypanosoma cruzi infection in triatomines was assessed by direct microscopic observation (400x) of feces and polymerase chain reaction. Serological techniques used for people were Indirect Hemagglutination Test and Indirect Fluorescent Test. Triatomines were collected in 28.1% of the houses and 31.8% of the wild biotopes. Triatoma infestans (Klug 1834) was exclusively found indoors and T. cruzi infected 60% of them. Triatoma sordida (St l 1859) was mainly found in extradomestic ecotopes where trypanosome infection rate reached 12.7%. Serological study of 98 local people showed that 29.6% were seroreactive; most of their houses were closed to wild biotopes colonized by T. sordida. Results indicate that there is an active T. infestans mediated transmission of Chagas disease in this zone that yields important human prevalence and that the populations of T. sordida in wild biotopes not only sustain the wild T. cruzi cycle but also represent an actual risk for people living in the area.
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