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Search Results: 1 - 10 of 19099 matches for " Gloria Elena Rojas Wastavino "
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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.
Estudio de la respuesta inmune humoral en cerdos infectados con huevos y posoncosferas de Taeina solium Study on immune humoral response in pigs infected with eggs and posoncospheresof Taenia solium
Gloria Rojas Wastavino,Patricia Tato Zaldívar,Sandra SolanoGalvez,Luis Herrera Montalvo
Boletín chileno de parasitología , 1999,
Abstract: Due to the importance of cysticercosis in Mexico and Latin America and to the fact that in the last years another mechanism of infection for this disease has been proposed, i.e. through postoncospheres and immunosuppression of the host, we have considered relevant to perform the present work, which consisted in assessing the immune response induced by dexamethasone as well as that produced by parasites in pigs infected with T. solium eggs, or postoncosphere-infected, and in postoncosphere-infected and dexamethasone-treated animals. We used 10 recently weaned pigs, three were used as controls, two of them without the drug and one with it; two were infected with T. solium eggs; five with postoncospheres receiving also dexamethasone three of them.We evaluated the humoral response against parasite antigen using indirect haemagglutination (IH) and ELISA methods Results of the immune humoral response revealed titres of up to 1:128 in T. solium eggs infected animals, of 1:16 in postoncosphere infected animals, and of 1:32 towards the end of the experiment in postoncosphere plus dexamethasone animals. Absorbance titres with ELISA confirmed these findings. Data obtained by IH show that the antibody titres of the pigs challenged with postoncospheres and postoncospheres plus dexamethasone are positive as compared to the titres obtained in the pigs infected with T. solium eggs. Results from the ELISA confirmed this finding, since, from weeks 14 to 17, the pigs became positive, behaving as those pigs that developed cysticercosis. This is relevant as it indicates that the antiposcosphere antibodies recognized antigens of T. solium larvae.
Estudio de la respuesta inmune humoral en cerdos infectados con huevos y posoncosferas de Taeina solium
Rojas Wastavino,Gloria; Tato Zaldívar,Patricia; SolanoGalvez,Sandra; Herrera Montalvo,Luis; Gutiérrez Quiroz,Manuel; SalazarSchettino,Paz;
Boletín chileno de parasitología , 1999, DOI: 10.4067/S0365-94021999000300004
Abstract: due to the importance of cysticercosis in mexico and latin america and to the fact that in the last years another mechanism of infection for this disease has been proposed, i.e. through postoncospheres and immunosuppression of the host, we have considered relevant to perform the present work, which consisted in assessing the immune response induced by dexamethasone as well as that produced by parasites in pigs infected with t. solium eggs, or postoncosphere-infected, and in postoncosphere-infected and dexamethasone-treated animals. we used 10 recently weaned pigs, three were used as controls, two of them without the drug and one with it; two were infected with t. solium eggs; five with postoncospheres receiving also dexamethasone three of them.we evaluated the humoral response against parasite antigen using indirect haemagglutination (ih) and elisa methods results of the immune humoral response revealed titres of up to 1:128 in t. solium eggs infected animals, of 1:16 in postoncosphere infected animals, and of 1:32 towards the end of the experiment in postoncosphere plus dexamethasone animals. absorbance titres with elisa confirmed these findings. data obtained by ih show that the antibody titres of the pigs challenged with postoncospheres and postoncospheres plus dexamethasone are positive as compared to the titres obtained in the pigs infected with t. solium eggs. results from the elisa confirmed this finding, since, from weeks 14 to 17, the pigs became positive, behaving as those pigs that developed cysticercosis. this is relevant as it indicates that the antiposcosphere antibodies recognized antigens of t. solium larvae.
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.
Insecticide and community interventions to control Triatoma dimidiata in localities of the State of Veracruz, Mexico
Wastavino, Gloria Rojas;Cabrera-Bravo, Margarita;García De La Torre, Guadalupe;Vences-Blanco, Mauro;Ruiz Hernández, Adela;Bucio Torres, Martha;Guevara Gómez, Yolanda;Mesa, Alejandro;Salazar Schettino, Paz María;
Memórias do Instituto Oswaldo Cruz , 2004, DOI: 10.1590/S0074-02762004000400015
Abstract: three different interventions to control triatoma dimidiata in the state of veracruz were implemented: x-1 = whole dwelling spraying, x-2 = middle wall spraying, x-3 = household cleaning. cyfluthrin was sprayed 3 times with 8 month intervals. after each spraying, insects were collected and sent to the laboratory to be recorded and to determine genus and species of the adult triatomine bugs, and nymphs were counted. trypanosoma cruzi presence was determined. with x-1, the infestation, colonization, and natural infection indexes were reduced to 0% in the 3 localities, with respect to t0. with x-2, the infestation index was reduced to 10% at t3 in 3 localities; the colonization index was reduced to 0% in only 1 locality at t3, and the natural infection index was reduced to 0% at t3. with x-3 the 3 indexes were not effectively reduced but they decreased with respect to the baseline study. insecticide application to the whole dwelling is a more efficient intervention than its application to only the lower half of the walls and to the cleaning of houses.
Estudio bioedafológico preliminar de la Isla Gorgona
Chamorro Bello Clara Elena,Torres Fernandez Orlando,Pinilla A. Gabriel,Rojas F. Gloria
Acta Biológica Colombiana , 1989,
Abstract: Los suelos de la Isla Gorgona son Inceptisoles con buena a baja saturación de bases (Eutropepts y Dystropepts respectivamente), con tendencia a ser ácidos y buena capacidad de intercambio catiónico. Domina en ellos la textura arcillosa: el contenido de materia orgánica es alto en los horizontes O y A, razón por la cual predominan, en la fauna edáfica las formas de hábitos fitófagos y saprófagos. Los más representativos de la fauna internadel suelo (0 a 40 ern) son Insecta y Annelida e Insecta y Aracnida en la faunasuperficial.
NUEVOS REGISTROS Y ANTECEDENTES DE LA FAMILIA CACTACEAE PARA CHILE EN LA REGION DE AISEN
Saldivia,Patricio; Rojas,Gloria;
Gayana. Botánica , 2008, DOI: 10.4067/S0717-66432008000200006
Abstract: maihuenia patagónica (phil.) britton & rose ana pterocactus australis (f.a.c.weber) backeb. are pointed for the first time in to the chilean vascular flora. furthermore, it is given new information about the distribution and ecology of other three species of cactaceae located at aisen region. all species were registered in chile only on the southern edge of the general carrera lake, in the region. there is included for each species a detailed description, their distribution, flora and associated vegetation, ecological aspects and it is proposed a classification about their conservation status in chile.
Valeriana moyanoi Speg. (Valerianaceae), nuevo registro para la flora de Chile
Saldivia,Patricio; Rojas,Gloria;
Gayana. Botánica , 2006, DOI: 10.4067/S0717-66432006000200006
Abstract: valeriana moyanoi speg. (valerianaceae), known until today just for the argentinean flora, was collected for the first time in chile in two places of the xi region of aysén; cerro rosado and the jeinimeni lake national reserve. this study includes a description of the species, its chilean-argentinean distribution, habitat and associate species
ESTUDIOS BOTáNICOS, PALEOAMBIENTE Y ARQUEOLOGíA: CERRO ONAS, TRES ARROYOS, TIERRA DEL FUEGO
Rojas Villegas,Gloria;
Chungará (Arica) , 2004, DOI: 10.4067/S0717-73562004000300040
Abstract: as a way of improving the efficiency to respond the queries on the paleoenvironment and the primitive inhabitant's environment, evidenced in the archaeological places, starting from the botanical analysis, i suggest the following sequence of studies, to be: current vegetation, rain pollen, study of fossil pollen, archaebotany study (charcoal, charred seeds, utensils, coprolites, wood and the evaluation of protection resources,feeding,fuel, tools, etc.). using the methodology some examples is given based on the results obtained in cerro onas, tres arroyos, tierra del fuego
Writing Using Blogs: A Way to Engage Colombian Adolescents in Meaningful Communication
Rojas álvarez,Gloria;
Profile Issues in Teachers` Professional Development , 2011,
Abstract: we report an action research project developed with ninth grade students of a public school in bogotá, colombia, and which focused on innovating english communication through writing blogs. the project took into account the implementation of a specific blog that proposes activities, suggestions, strategies and links, among other things, to increase communication in english. it also prompted the written production of students in the blogs when posting entries and communicating through them. some aspects of the project were developed in the classroom; others in the computers room, and others were developed by the students independently or collaboratively with classmates. findings show how students communicated through writing in blogs and the main characteristics of the interaction that took place when using them.
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