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Search Results: 1 - 10 of 567898 matches for " Bar María E. "
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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.
Life cycle and reproductive patterns of Triatoma rubrovaria (Blanchard, 1843) (Hemiptera: Reduviidae) under constant and fluctuating conditions of temperature and humidity
Damborsky, Miryam P.;Bar, María E.;Gorla, David;
Revista da Sociedade Brasileira de Medicina Tropical , 2005, DOI: 10.1590/S0037-86822005000500014
Abstract: the aim of this study was to evaluate the temperature and relative humidity influence in the life cycle, mortality and fecundity patterns of triatoma rubrovaria. four cohorts with 60 recently laid eggs each were conformed. the cohorts were divided into two groups. in the controlled conditions group insects were maintained in a dark climatic chamber under constant temperature and humidity, whereas triatomines of the ambiental temperature group were maintained at room temperature. average incubation time was 15.6 days in the controlled conditions group and 19.1 days in the ambiental temperature. in group controlled conditions the time from egg to adult development lasted 10 months while group ambiental temperature took four months longer. egg eclosion rate was 99.1% and 98.3% in controlled conditions and ambiental temperature, respectively. total nymphal mortality in controlled conditions was 52.6% whereas in ambiental temperature was 51.8%. mean number of eggs/female was 817.6 controlled conditions and 837.1 ambiental temperature. fluctuating temperature and humidity promoted changes in the life cycle duration and in the reproductive performance of this species, although not in the species mortality.
Life cycle and reproductive patterns of Triatoma rubrovaria (Blanchard, 1843) (Hemiptera: Reduviidae) under constant and fluctuating conditions of temperature and humidity
Damborsky Miryam P.,Bar María E.,Gorla David
Revista da Sociedade Brasileira de Medicina Tropical , 2005,
Abstract: The aim of this study was to evaluate the temperature and relative humidity influence in the life cycle, mortality and fecundity patterns of Triatoma rubrovaria. Four cohorts with 60 recently laid eggs each were conformed. The cohorts were divided into two groups. In the controlled conditions group insects were maintained in a dark climatic chamber under constant temperature and humidity, whereas triatomines of the ambiental temperature group were maintained at room temperature. Average incubation time was 15.6 days in the controlled conditions group and 19.1 days in the ambiental temperature. In group controlled conditions the time from egg to adult development lasted 10 months while group ambiental temperature took four months longer. Egg eclosion rate was 99.1% and 98.3% in controlled conditions and ambiental temperature, respectively. Total nymphal mortality in controlled conditions was 52.6% whereas in ambiental temperature was 51.8%. Mean number of eggs/female was 817.6 controlled conditions and 837.1 ambiental temperature. Fluctuating temperature and humidity promoted changes in the life cycle duration and in the reproductive performance of this species, although not in the species mortality.
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.
Registros y distribución de la especie afroasiática Digitonthophagus gazella (Coleoptera: Scarabaeidae: Scarabaeinae) en Argentina
álvarez Bohle,María C.; Damborsky,Miryam P.; Bar,María E.; Ocampo,Federico C.;
Revista de la Sociedad Entomol?3gica Argentina , 2009,
Abstract: the occurrence of the dung beetle digitonthophagus gazella fabricius (coleoptera: scarabaeidae) is reported for the first time for argentina. the record of this species represents an extension of its geographical range in south america. this species of afro asian origin was captured by manual collection in cattle dung, light traps, and dung baited pitfall traps in six provinces of northern and central argentina between 2006 and 2009.
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.
Registros y distribución de la especie afroasiática Digitonthophagus gazella (Coleoptera: Scarabaeidae: Scarabaeinae) en Argentina Records and distribution of the Afro Asian species Digitonthophagus gazella (Coleoptera: Scarabaeidae: Scarabaeinae) in Argentina
María C. álvarez Bohle,Miryam P. Damborsky,María E. Bar,Federico C. Ocampo
Revista de la Sociedad Entomol?3gica Argentina , 2009,
Abstract: Se cita por primera vez el escarabajo coprófago Digitonthophagus gazella Fabricius (Coleoptera: Scarabaeidae) para Argentina, por lo que se amplía su área de distribución geográfica en Sudamérica. Esta especie de origen afro-asiático fue capturada mediante colecta manual en estiércol de ganado bovino y equino, con trampas de luz y trampas de caída cebadas con estiércol en seis provincias del centro y norte argentino entre los a os 2006 y 2009. The occurrence of the dung beetle Digitonthophagus gazella Fabricius (Coleoptera: Scarabaeidae) is reported for the first time for Argentina. The record of this species represents an extension of its geographical range in South America. This species of Afro Asian origin was captured by manual collection in cattle dung, light traps, and dung baited pitfall traps in six provinces of Northern and Central Argentina between 2006 and 2009.
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.
Composición de la fauna de Araneae (Arachnida) de la Reserva provincial Iberá, Corrientes, Argentina
Avalos,Gilberto; Damborsky,Miryam P; Bar,María E; Oscherov,Elena B; Porcel,E;
Revista de Biología Tropical , 2009,
Abstract: composition of the araneae (arachnida) fauna of the provincial iberá reserve, corrientes, argentina. a survey of the spider community composition and diversity was carried out in grasslands and woods in three localities: colonia pellegrini, paraje galarza and estancia rincón (iberá province reserve). pit fall traps, leaf litter sifting, foliage beating, hand collecting and sweep nets were used. shannon?s diversity index, evenness, berger-parker?s dominance index, ? and diversity were calculated, and a checklist of spider fauna was compiled. species richness was estimated by chao 1, chao 2, first and second order jack-knife. a total of 4 138 spiders grouped into 150 species from 33 families of araneomorphae and two species from two families of mygalomorphae were collected. five species are new records for argentina and eleven for corrientes province. araneidae was the most abundant family (39.8%), followed by salticidae (10.9%), anyphaenidae (7.9%), tetragnathidae (7.4%), and lycosidae (5.5%). the other families represented less than 5% of the total catch. the web-builder guild had the highest number of specimens and the highest richness index. the abundance, observed richness, shannon diversity and evenness indexes were highest in colonia pellegrini woodland and paraje galarza grassland. alpha diversity represented 89% of the gamma; the remaining 11% corresponded to ? diversity. according to the indexes, between 67% and 97% of the existing spider fauna was represented in the collected specimens from iberá. rev. biol. trop. 57 (1-2): 339-351. epub 2009 june 30.
Toxicología subcrónica bucal del extracto fluido de Plantago lanceolata L
Talía Romay Penabad,María del Carmen Sotolongo Baró,Caridad Sebazco Pernas,María E Perdomo Paiba
Revista Cubana de Plantas Medicinales , 1996,
Abstract:
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