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Search Results: 1 - 10 of 469083 matches for " Paz María Salazar Schettino "
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Cuticular hydrocarbons of Chagas disease vectors in Mexico
Juárez, M Patricia;Carlson, David A;Salazar Schettino, Paz María;Mijailovsky, Sergio;Rojas, Gloria;
Memórias do Instituto Oswaldo Cruz , 2002, DOI: 10.1590/S0074-02762002000600012
Abstract: capillary gas-liquid chromatography was used to analyse the cuticular hydrocarbons of three triatomine species, triatoma dimidiata, t. barberi and dipetalogaster maxima, domestic vectors of chagas disease in mexico. mixtures of saturated hydrocarbons of straight and methyl-branched chains were characteristic of the three species, but quantitatively different. major methylbranched components mostly corresponded to different saturated isomers of monomethyl, dimethyl and trimethyl branched hydrocarbons ranging from 29 to 39 carbon backbones. sex-dependant, quantitative differences in certain hydrocarbons were apparent in t. dimidiata.
Cuticular hydrocarbons of Chagas disease vectors in Mexico
Juárez M Patricia,Carlson David A,Salazar Schettino Paz María,Mijailovsky Sergio
Memórias do Instituto Oswaldo Cruz , 2002,
Abstract: Capillary gas-liquid chromatography was used to analyse the cuticular hydrocarbons of three triatomine species, Triatoma dimidiata, T. barberi and Dipetalogaster maxima, domestic vectors of Chagas disease in Mexico. Mixtures of saturated hydrocarbons of straight and methyl-branched chains were characteristic of the three species, but quantitatively different. Major methylbranched components mostly corresponded to different saturated isomers of monomethyl, dimethyl and trimethyl branched hydrocarbons ranging from 29 to 39 carbon backbones. Sex-dependant, quantitative differences in certain hydrocarbons were apparent in T. dimidiata.
Comportamiento biológico de Triatoma pallidipennis (Hemiptera: Reduviidae) en el estado de Morelos, México
Bautista,Norma; Rojas,Gloria; De Haro,Irene; Bucio,Martha; Salazar Schettino,Paz María;
Boletín chileno de parasitología , 2001, DOI: 10.4067/S0365-94022001000200004
Abstract: t. pallidipennis was found naturally infected in localities of domestic, peridomestic and wild areas in the state of morelos, méxico. in agreement with the triatomines high potentiality like vectors of t. cruzi, protozoan that causes chagas' disease and the knowledge of these bugs in méxico, the aim of the present research was to collect triatomines for assessment of t. cruzi infection, to characterize and compare life cycles, identification of feeding preferences and observe indexes of experimental infectivity. seven isolates of t. cruzi were obtained, from differents localities which curves of parasites showed different behaviors. histopathological study, carried out by counting of amastigotes nests, which affected the gastrocnemius muscle and heard was observed. the life cycles of t. pallidipennis was completed in 131 days. the feeding preferences were rats, cats and pigs.
Iniciativa México: Propuesta para el control y vigilancia epidemiológica de la enfermedad de Chagas en México
Salazar Schettino,Paz María; Cravioto Q,Alejandro; Tapia Conver,Roberto;
Boletín chileno de parasitología , 2001, DOI: 10.4067/S0365-94022001000200008
Abstract: it is showed the programme for the knowledge, control and epidemiological surveillance of chagas disease in mexico.
Distribución Espacial de Vectores de la Enfermedad de Chagas en el Estado de Guanajuato 1998-2000 Distribución Espacial de Vectores de la Enfermedad de Chagas en el Estado de Guanajuato 1998-2000
Jorge López Cárdenas,Francisco Ernesto González Bravo,Paz María Salazar Schettino
Acta Universitaria , 2012,
Abstract: This study has been perfomed in order to verify the existence and location of vectors of Chagas disease in the entities of Guanajuato state to limit the territories and risk areas. Determining the infection of Trypanosoma cruzi in the vectors, evaluates the risk to human population. This research has been conducted evaluating the information of the labeled triatominos obtained by the field personnel of the Secretaria de Salud del estado de Guanajuato, and classified by the Laboratorio Estatal de Salud del Estado de Guanajuato. The information was obtained from 1998 to 2000 in the entities where work brigades are located and the reported abscence of vectors probably is due the absence of search on them. The index of infestation was not performed due the different search intensity across the territory and the sample method. Just the location of every studied specie to the collecting area was established. Triatoma mexicana, T. barberi, T. longipennis, T. pallidipennis y T. dimidiata, was present in 162 places of 25 entities of the states; at heighs of 870 to 2200 meters above sea level. Inside the house is the site where T. mexicana was present in a major frecuency, for T. barberi was the yard, for T. longipennis inside the house, as well as the T. pallidipennis and the ninphs, T. dimidiata which was collected once, did not reported collect site. El presente estudio se realizó con la finalidad de llevar a cabo la verificación de la existencia y la ubicación de los vectores de la enfermedad de Chagas en los municipios del Estado de Guanajuato y a través de esto, delimitar áreas de distribución espacial de las especies dentro de este territorio, contribuyendo así, a establecer zonas de riesgo y al determinar la infección del Trypanosoma cruzi en los vectores, se conocerá el riesgo para la población humana. Esta investigación se realizó a través de la información del envío etiquetado de triatominos obtenidos por personal de campo de la Secretaría de Salud de Guanajuato y enviados para su clasificación taxonómica al Laboratorio Estatal de Salud Pública del mismo estado. Se recabó información de tres a os (1998 - 2000) de los municipios donde se encuentran brigadas de trabajo y la ausencia reportada de vectores en algunos de ellos, probablemente se debe a la falta de búsqueda en los mismos. No se realizó el índice de infestación de vectores debido a que el método de búsqueda no tuvo la misma intensidad en todo el territorio, ni el método de muestreo lo permitió; sólo se estableció la localización de cada una de las especies según el área de donde fue colectada.
First Case of Natural Infection in Pigs: Review of Trypanosoma cruzi Reservoirs in Mexico
Salazar-Schettino Paz María,Bucio Martha Irene,Cabrera Margarita,Bautista Jacobo
Memórias do Instituto Oswaldo Cruz , 1997,
Abstract: An epidemiological research project was performed in the State of Morelos including collection of samples for blood smears and culture, serological tests, and xenodiagnoses from a total of 76 domestic and peridomestic mammals. Two strains of Trypanosoma cruzi were isolated by haemocultures; one from a pig (Sus scrofa), the first case of natural infection reported in Mexico, and the other from a dog (Canis familiaris). This study summarizes current information in Mexico concerning confirmed reservoirs of T. cruzi
Iniciativa México: Propuesta para el control y vigilancia epidemiológica de la enfermedad de Chagas en México Mexico iniciative: A proposal for the epidemiological control and surveillance of Chagas disease in Mexico
Paz María Salazar Schettino,Alejandro Cravioto Q,Roberto Tapia Conver
Boletín chileno de parasitología , 2001,
Abstract: It is showed the programme for the knowledge, control and epidemiological surveillance of Chagas disease in Mexico.
Triatoma mexicana Herrich-Schaeffer (Hemiptera: Reduviidae: Triatominae) Descripción de la Genitalia Externa del Macho y Morfología Externa de la Hembra Triatoma mexicana Herrich-Schaeffer (Hemiptera: Reduviidae: Triatominae) Description of the External Male Genitalia and External Morphology of the Female
Paz María Salazar Schettino,Gloria Elena Rojas Wastavino,José Santiago Rosales Pi?a,Mauro Omar Vences Blanco
EntomoBrasilis , 2013, DOI: 10.12741/ebrasilis.v6i1.275
Abstract: Triatoma mexicana fue descrita originalmente en 1848 por Herrich-Schaeffer nombrándola Conorhinus mexicanus Herrich-Schaeffer. Actualmente se registra su hallazgo en los estados de Guanajuato, Hidalgo Querétaro y San Luis Potosí. Los estudios sobre su distribución espacial, índices entomológicos, presencia en el intradomicilio y peridomicilio, biología y riesgo de transmisión de Trypanosoma cruzi Chagas demuestran que es una especie importante desde el punto de vista de salud pública. Con el propósito de ampliar el conocimiento biológico sobre la especie, en el presente estudio se hace la descripción de la hembra así como la genitalia externa del macho, en ejemplares capturados en el estado de Guanajuato. Triatoma mexicana was originally described in 1848 by Herrich-Schaeffer, naming Conorhinus mexicanus Herrich-Schaeffer. Its finding is currently registered in the States of Guanajuato, Hidalgo, Querétaro, and San Luis Potosí. Studies about the spatial distribution, the entomological indices, it presence indoor an outdoor in houses, it biology and risk of transmission of Trypanosoma cruzi Chagas show that it is an important species from the point of view of public health. With the purpose of extending the biological knowledge of this species, the present study is the description of the female as well as the external male genitalia, in specimens captured in the State of Guanajuato.
Triatoma mexicana (Hemiptera: Reduviidae) in Guanajuato, Mexico: house infestation and seasonal variation
Salazar Schettino, Paz María;Rosales Pi?a, José Santiago;Rojas Wastavino, Gloria;Cabrera Bravo, Margarita;Vences Blanco, Mauro;López Cárdenas, Jorge;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007005000118
Abstract: triatoma mexicana was described by herrich-schaeffer in 1848. in 1940, a male specimen was found in hidalgo. in 1970, this species was recorded in the state of queretaro. later, it was registered in guanajuato and san luis potosi. in the present paper we performed an investigation in 545 dwellings from three counties in the state of guanajuato, mexico, from march 2003 to may 2004. the search and capture of triatomines were seasonally performed indoors and outdoors. entomological indexes were calculated. the risk and no risk relations between triatomine presence and housing construction materials were analyzed. fourteen triatomines were collected indoors and 151 outdoors. the vectors were collected in houses built with either risky and non-risky materials. adults go indoors but do not settle there, hence, no relationship was found between the building materials and infestation of houses. conventional interventions like house improvement or insecticide spraying are not efficient for the control of t. mexicana, because its developmental cycle is accomplished outdoors in the area surrounding the houses.
Occurrence of hybrids and laboratory evidence of fertility among three species of the Phyllosoma complex (Hemiptera: Reduviidae) in Mexico
Martínez-Ibarra, José Alejandro;Salazar-Schettino, Paz María;Nogueda-Torres, Benjamín;Vences, Mauro Omar;Tapia-González, José María;Espinoza-Gutiérrez, Bertha;
Memórias do Instituto Oswaldo Cruz , 2009, DOI: 10.1590/S0074-02762009000800009
Abstract: in seven studied communities of western mexico, triatomine specimens were sympatrically collected, some with atypical morphological characteristics in contrast to pure specimens, which were presumed to be hybrids. more than 200 specimens of meccus pallidipennis and meccus longipennis with brown-yellow markings on dorsal connexival segments were collected in ahuacapán and quitupan. in la mesa, more than 60 specimens similar to meccus picturatus in most morphological characteristics (including size) were collected, although they presented a largely yellowish corium like m. pallidipennis. interfertility was proven between all of the studied wild hybrid specimens, as well as between all the experimental laboratory hybrids. two different phenotypes (m. picturatus and m. longipennis) were obtained from crosses between m. picturatus x m. picturatus and m. longipennis x m. longipennis from the three studied localities in state of nayarit as from la mesita. results support the hypothesis that the subspecific ranking of those triatomines may, therefore, be more appropriate because reproductive isolation has not been developed and complete interbreeding was recorded.
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