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Showing 201 - 400 of 892 Journals sorted alphabetically
Cuestiones Constitucionales     Open Access   (Followers: 2, SJR: 0.1, CiteScore: 0)
Cuicuilco     Open Access   (Followers: 1)
Cuicuilco. Revista de Ciencias Antropológicas     Open Access   (Followers: 1)
Cultivos Tropicales     Open Access   (Followers: 1)
Cultura y Representaciones Sociales     Open Access   (Followers: 1)
Culturales     Open Access   (Followers: 3)
Dados - Revista de Ciências Sociais     Open Access   (SJR: 0.37, CiteScore: 0)
De Jure     Open Access   (Followers: 1)
DELTA : Documentação de Estudos em Lingüística Teórica e Aplicada     Open Access   (SJR: 0.133, CiteScore: 0)
Dementia & Neuropsychologia     Open Access   (Followers: 10, SJR: 0.205, CiteScore: 0)
Dental Press J. of Orthodontics     Open Access   (Followers: 5, SJR: 0.489, CiteScore: 1)
Desacatos     Open Access   (Followers: 1)
Desacatos : Revista de Antropología Social     Open Access   (Followers: 1)
Desarrollo y Sociedad     Open Access   (Followers: 3, SJR: 0.109, CiteScore: 0)
Diálogo Andino - Revista de Historia, Geografía y Cultura Andina     Open Access   (Followers: 1, SJR: 0.116, CiteScore: 0)
Diánoia     Open Access   (Followers: 1)
Dimensión Empresarial     Open Access  
Discusiones Filosóficas     Open Access   (Followers: 1)
Dynamis : Acta Hispanica ad Medicinae Scientiarumque Historiam Illustrandam     Open Access   (Followers: 3, SJR: 0.131, CiteScore: 0)
e-J. of Portuguese History     Open Access   (Followers: 2, SJR: 0.101, CiteScore: 0)
e-Pública : Revista Eletrónica de Direito Público     Open Access   (Followers: 1)
Earth Sciences Research J.     Open Access   (Followers: 1)
Eclética Química     Open Access   (Followers: 1)
Ecología en Bolivia     Open Access  
Economia Aplicada     Open Access   (SJR: 0.208, CiteScore: 0)
Economia e Sociedade     Open Access  
EconoQuantum     Open Access  
Educação & Sociedade     Open Access   (Followers: 3)
Educação e Pesquisa     Open Access   (Followers: 1, SJR: 0.163, CiteScore: 0)
Educação em Revista     Open Access  
Educación Matemática     Open Access  
Educación Médica     Open Access   (Followers: 1, SJR: 0.236, CiteScore: 0)
Educación Médica Superior     Open Access   (Followers: 1, SJR: 0.237, CiteScore: 0)
Educación y Educadores     Open Access  
Educar em Revista     Open Access  
EDUMECENTRO     Open Access  
Eidos     Open Access   (SJR: 0.119, CiteScore: 0)
En-Claves del pensamiento     Open Access   (Followers: 1, SJR: 0.194, CiteScore: 0)
Encuentros     Open Access  
Ene : Revista de Enfermería     Open Access  
Enfermería Global     Open Access   (Followers: 3, SJR: 0.165, CiteScore: 0)
Enfermería Nefrológica     Open Access   (Followers: 1, SJR: 0.198, CiteScore: 0)
Enfoques     Open Access  
Engenharia Agrícola     Open Access   (SJR: 0.305, CiteScore: 1)
Engenharia Sanitaria e Ambiental     Open Access   (SJR: 0.218, CiteScore: 0)
Ensaio Avaliação e Políticas Públicas em Educação     Open Access   (Followers: 1, SJR: 0.254, CiteScore: 0)
Ensayos de Economía     Open Access   (Followers: 1)
Ensayos Revista de Economía     Open Access   (Followers: 1)
Entomologia y Vectores     Open Access   (Followers: 2)
Entre Ciencia e Ingeniería     Open Access   (Followers: 1)
Epidemiologia e Serviços de Saúde     Open Access  
Escritos de Psicología : Psychological Writings     Open Access   (Followers: 2)
Estudios Atacameños     Open Access   (Followers: 2, SJR: 0.446, CiteScore: 1)
Estudios Constitucionales     Open Access   (Followers: 5, SJR: 0.319, CiteScore: 0)
Estudios de Cultura Maya     Open Access   (Followers: 2, SJR: 0.272, CiteScore: 0)
Estudios de Economía     Open Access   (SJR: 0.121, CiteScore: 0)
Estudios de historia moderna y contemporánea de México     Open Access   (SJR: 0.101, CiteScore: 0)
Estudios Economicos     Open Access  
Estudios Filologicos     Open Access   (SJR: 0.107, CiteScore: 0)
Estudios Fronterizos     Open Access   (Followers: 1)
Estudios internacionales     Open Access   (Followers: 5)
Estudios Pedagogicos (Valdivia)     Open Access   (Followers: 1, SJR: 0.338, CiteScore: 0)
Estudios Políticos     Open Access  
Estudios Sociales     Open Access   (Followers: 2)
Estudios sociales : Revista de alimentación contemporánea y desarrollo regional     Open Access   (Followers: 1)
Estudios Socioterritoriales : Revista de Geografía     Open Access  
Estudos Afro-Asiáticos     Open Access   (Followers: 2)
Estudos Avançados     Open Access   (SJR: 0.232, CiteScore: 0)
Estudos de Psicologia (Campinas)     Open Access   (Followers: 1, SJR: 0.233, CiteScore: 0)
Estudos de Psicologia (Natal)     Open Access   (SJR: 0.117, CiteScore: 0)
Estudos Econômicos     Open Access   (SJR: 0.204, CiteScore: 0)
Estudos Históricos     Open Access   (Followers: 1)
EURE (Santiago) - Revista Latinoamericana de Estudios Urbano Regionales     Open Access   (SJR: 0.38, CiteScore: 1)
Ex aequo     Open Access  
FEM : Revista de la Fundación Educación Médica     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access   (Followers: 1)
Fisioterapia e Pesquisa     Open Access  
Fisioterapia em Movimento     Open Access  
Fitosanidad     Open Access  
Floresta e Ambiente     Open Access   (Followers: 1, SJR: 0.3, CiteScore: 0)
Folios     Open Access  
Food Science and Technology (Campinas)     Open Access   (Followers: 1, SJR: 0.467, CiteScore: 1)
Formación Universitaria     Open Access   (Followers: 4, SJR: 0.213, CiteScore: 1)
Frónesis     Open Access   (Followers: 1)
Frontera Norte     Open Access  
Gaceta Médica Boliviana     Open Access  
Gaceta Médica Espirituana     Open Access  
Galáxia (São Paulo)     Open Access  
Gayana (Concepcion)     Open Access   (SJR: 0.236, CiteScore: 0)
Gayana. Botanica     Open Access   (SJR: 0.234, CiteScore: 0)
Genetics and Molecular Biology     Open Access   (Followers: 15, SJR: 0.638, CiteScore: 2)
Geofísica internacional     Open Access   (SJR: 0.312, CiteScore: 1)
Gerokomos     Open Access   (Followers: 1, SJR: 0.257, CiteScore: 0)
Gestão & Produção     Open Access   (SJR: 0.156, CiteScore: 0)
Gestión y Política Pública     Open Access   (Followers: 2, SJR: 0.106, CiteScore: 0)
Hacia la Promoción de la Salud     Open Access  
Hallazgos     Open Access   (Followers: 1)
Hidrobiológica     Open Access   (SJR: 0.166, CiteScore: 0)
Historia     Open Access   (Followers: 2)
Historia (Santiago)     Open Access   (Followers: 1, SJR: 0.162, CiteScore: 0)
História (São Paulo)     Open Access   (SJR: 0.11, CiteScore: 0)
História, Ciências, Saúde - Manguinhos     Open Access   (Followers: 2, SJR: 0.144, CiteScore: 0)
Hoehnea     Open Access  
Horizonte Sanitario     Open Access   (Followers: 1)
Horizontes Antropológicos     Open Access   (Followers: 3, SJR: 0.233, CiteScore: 0)
Horticultura Brasileira     Open Access   (SJR: 0.605, CiteScore: 1)
HTS Theological Studies     Open Access   (Followers: 8, SJR: 0.448, CiteScore: 0)
Humanidades Médicas     Open Access  
IDESIA : Revista de Agricultura en Zonas Áridas     Open Access   (SJR: 0.223, CiteScore: 0)
Iheringia. Série Zoologia     Open Access   (Followers: 1, SJR: 0.26, CiteScore: 1)
Íkala : Revista de Lenguaje y Cultura     Open Access   (SJR: 0.112, CiteScore: 0)
Image & Text     Open Access   (Followers: 1)
Index de Enfermeria     Open Access   (Followers: 5, SJR: 0.113, CiteScore: 0)
Indo-Pacific J. of Phenomenology     Open Access   (Followers: 1)
Infectio     Open Access   (SJR: 0.133, CiteScore: 0)
Información Tecnológica     Open Access   (SJR: 0.197, CiteScore: 0)
Ingeniare : Revista Chilena de Ingenieria     Open Access   (Followers: 1, SJR: 0.239, CiteScore: 0)
Ingeniería Electrónica, Automática y Comunicaciones     Open Access  
Ingeniería Hidráulica y Ambiental     Open Access  
Ingeniería Industrial     Open Access  
Ingeniería Mecánica     Open Access   (Followers: 4)
Ingenieria Mecánica. Tecnologia y Desarrollo     Open Access   (Followers: 3)
Ingeniería y Competitividad     Open Access  
Ingenieria y Universidad     Open Access   (Followers: 1, SJR: 0.161, CiteScore: 1)
Ingeniería, Investigación y Tecnología     Open Access   (Followers: 1)
Innovar     Open Access   (SJR: 0.118, CiteScore: 0)
Interações (Campo Grande)     Open Access  
Interface - Comunicação, Saúde, Educação     Open Access   (Followers: 1, SJR: 0.417, CiteScore: 0)
Intersticios Sociales     Open Access   (Followers: 1)
Intervención     Open Access   (Followers: 1)
Intervención Psicosocial     Open Access   (SJR: 0.381, CiteScore: 1)
Intl. Brazilian J. of Urology     Open Access   (Followers: 4, SJR: 0.367, CiteScore: 1)
Intl. J. of Morphology     Open Access  
Intl. J. of Odontostomatology     Open Access   (Followers: 1)
Intl. Law: Revista Colombiana de Derecho Internacional     Open Access   (Followers: 3)
Investigación Administrativa     Open Access   (Followers: 1)
Investigación Bibliotecológica     Open Access   (Followers: 6, SJR: 0.274, CiteScore: 0)
Investigación Económica     Open Access   (Followers: 4, SJR: 0.132, CiteScore: 0)
Investigación y Desarrollo     Open Access   (Followers: 1)
Investigación y Educación en Enfermería     Open Access   (Followers: 1, SJR: 0.198, CiteScore: 0)
Investigaciones Geográficas     Open Access   (SJR: 0.246, CiteScore: 0)
Investigaciones Marinas     Open Access  
Iteckne     Open Access  
Iuris Tantum Revista Boliviana de Derecho     Open Access  
Ius et Praxis     Open Access   (SJR: 0.283, CiteScore: 0)
Izquierdas     Open Access   (SJR: 0.188, CiteScore: 0)
Iztapalapa : Revista de ciencias sociales y humanidades     Open Access   (Followers: 1)
J. of Applied Oral Science     Open Access   (SJR: 0.645, CiteScore: 2)
J. of Applied Research and Technology     Open Access   (SJR: 0.255, CiteScore: 1)
J. of Coloproctology     Open Access   (SJR: 0.167, CiteScore: 0)
J. of Energy in Southern Africa     Open Access   (Followers: 3, SJR: 0.249, CiteScore: 1)
J. of Epilepsy and Clinical Neurophysiology     Open Access   (Followers: 7)
J. of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 11, SJR: 0.146, CiteScore: 1)
J. of Seed Science     Open Access   (Followers: 1)
J. of Soil Science and Plant Nutrition     Open Access   (Followers: 11, SJR: 0.823, CiteScore: 2)
J. of Technology Management & Innovation     Open Access   (Followers: 5, SJR: 0.271, CiteScore: 1)
J. of the Brazilian Chemical Society     Open Access   (Followers: 2, SJR: 0.357, CiteScore: 1)
J. of the Brazilian Society of Mechanical Sciences     Open Access   (Followers: 2)
J. of the Chilean Chemical Society     Open Access   (Followers: 2, SJR: 0.201, CiteScore: 1)
J. of the Mexican Chemical Society     Open Access   (Followers: 2, SJR: 0.214, CiteScore: 1)
J. of the Selva Andina Research Society     Open Access   (Followers: 3)
J. of the South African Institution of Civil Engineering     Open Access   (Followers: 2, SJR: 0.174, CiteScore: 0)
J. of the Southern African Institute of Mining and Metallurgy     Open Access   (Followers: 6)
J. of Venomous Animals and Toxins     Open Access   (Followers: 2)
JISTEM : J. of Information Systems and Technology Management     Open Access   (Followers: 7)
Jornal Brasileiro de Nefrologia     Open Access   (SJR: 0.334, CiteScore: 1)
Jornal Brasileiro de Patologia e Medicina Laboratorial     Open Access   (SJR: 0.143, CiteScore: 0)
Jornal Brasileiro de Pneumologia     Open Access   (SJR: 0.448, CiteScore: 1)
Jornal Brasileiro de Psiquiatria     Open Access   (Followers: 2, SJR: 0.224, CiteScore: 0)
Jornal da Sociedade Brasileira de Fonoaudiologia     Open Access  
Jornal de Pneumologia     Open Access  
Jornal Vascular Brasileiro     Open Access   (SJR: 0.136, CiteScore: 0)
Justicia Juris     Open Access  
Kriterion: Revista de Filosofia     Open Access   (Followers: 1, SJR: 0.114, CiteScore: 0)
Kronos : Southern African Histories     Open Access   (Followers: 6)
La ventana. Revista de estudios de género     Open Access  
La zaranda de ideas     Open Access   (Followers: 1)
Laboreal     Open Access  
Lankesteriana     Open Access   (SJR: 0.458, CiteScore: 1)
Latin American Applied Research     Open Access   (Followers: 1)
Latin American J. of Aquatic Research     Open Access   (SJR: 0.289, CiteScore: 1)
Latin American J. of Economics     Open Access   (Followers: 1, SJR: 0.127, CiteScore: 0)
Latin American J. of Solids and Structures     Open Access   (Followers: 4, SJR: 0.522, CiteScore: 1)
Latinoamérica. Revista de estudios Latinoamericanos     Open Access   (Followers: 2)
Lecturas de Economía     Open Access  
Letras Históricas     Open Access   (Followers: 1)
Límite : Revista Interdisciplinaria de Filosofía y Psicología     Open Access  
Linguagem em (Dis)curso     Open Access  
Lingüística     Open Access   (SJR: 0.13, CiteScore: 0)
Lingüística y Literatura     Open Access   (Followers: 1)
Literatura y Lingüística     Open Access   (Followers: 1, SJR: 0.13, CiteScore: 0)
Lua Nova : Revista de Cultura e Política     Open Access   (SJR: 0.274, CiteScore: 0)
Luna Azul     Open Access  
Machado de Assis em Linha     Open Access   (SJR: 0.101, CiteScore: 0)
Madera y Bosques     Open Access   (Followers: 1)
Maderas. Ciencia y tecnología     Open Access   (Followers: 2, SJR: 0.546, CiteScore: 1)
Magallania     Open Access   (SJR: 0.354, CiteScore: 0)
Mana - Estudos de Antropologia Social     Open Access   (Followers: 2, SJR: 0.355, CiteScore: 0)
Manuscrito     Open Access  
Mastozoología Neotropical     Open Access   (SJR: 0.332, CiteScore: 1)

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Parasitología al día
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0716-0720 - ISSN (Online) 0717-6198
Published by SciELO Homepage  [892 journals]
  • Una nueva revista biomédica: Parasitología
           Latinoamericana

    •  
  • BLOOD SOURCES OF Triatoma dimidiata (Hemiptera: Reduvidae) IN THE CENTRAL
           PLATEAU OF COSIA RICA AT THE END OF THE XX CENTURY

    • Abstract: 267 kissing hugs Triatoma dimidiata (Hemiptera: Reduvidae) were collected in peridomestic habitats located in tthree Chagas' disease epidemiological regions of the Central plateau of Costa Rica. Gut extract were prepared from each triatomine. They were assayed in an immuno double-diffusion system (Outcherlony) for detecting the presence of different kind of vertebrate bloods. Trypanosoma cruzi infection was also tested by microscopical observation of fecal smear. 67.0% of the samples were positive for human blood, that was the most important food source for the insect (p < 0.05). Dog was another important host and the blood was found in 49.8% of the samples. Rat, mouse, didelphid and chicken bloods were positive in porcentajes under 15.0%. The data can not demostrate that T. dimidata has special preferences for the avian blood. However, when the data are evaluated as exhausted and excluyent categories, chicken blood represents the second in frequency (9.0%). It could means that T. dimidata can choose the chickens as host, when humans or dogs are not available. The T. cruzi infection rate was higher in insects that were positive by opposum and rodent bloods. It suggest the role that these kind of animals can play as selvatic and domestic T. cruzi reservoirs.RESUMEN Se colectaron 267 ejemplares de Triatoma dimidiata procedentes de comunidades costarricenses ubicadas en tres regiones epidemiológicamente importantes por la Enfermedad de Chagas. A partir de cada insecto, se prepararon extractos de contenido intestinal los cuales fueron utilizados para determinar la presencia de sangres de diferentes vertebrados en un sistema de doble inmunodifusión (Outcherlony). También los insectos fueron sometidos a un análisis de contenido fecal para determinar la posible infección con T. cruzi. El 67% de las muestras fue positiva por sangre de humano, lo que constituyó la fuente de alimentación más importante (p < 0,05). También fue notable la presencia de sangre de perro en los vectores analizados (49,8%). Las sangres de rata, ratón, didélfidos y gallinas se encontraron en porcentajes menores al 15,0%. A pesar de que no se pudo observar una ornitofila manifiesta, cuando las preferencias alimentarias fueron organizadas como cate-gorías exhaustivas y mutuamente excluyentes, la sangre de gallina constituyó la segunda categoría en frecuencia lo que denota que los triatominos pueden utilizar este sustrato alimenticio cuando la sangre humana y canina no están disponibles. Los porcentajes de infección por T. cruzi fueron altamente positivos en los insectos positivos por sangres de didélfidos y ratones, lo que sugiere el papel que estos animales podrían jugar con reservorios silvestres y domicilios de T. cruzi.
       
  • Immune diagnosis of human fasciolosis in children from Cajamarca,
           Perú

    • Abstract: The immunodiagnostic potential of a FAST-ELISA for the detection of antibodies in fasciolosis with sera from 6-12 year old children from Cajamarca, Peru was examined. Four children negative parasitologically were negative by FAST-ELISA. All 13 children found positive parasitologically were also positive by FAST-ELISA for 100% sensitivity. Twelve of the 13 infected children seroreverted 4 months post dihydroemetine therapy showing lower antibody levels as compared with the pretreatment sample. These results suggest that FAST-ELISA may be useful for the determination of infection and success of therapy in children with fasciolosis.Se estudio el potencial inmunodiagnóstico de un FAST-ELISA para la detección de anticuerpos contra de fasciolosis en niños de Cajamarca, Perú. Sueros de 4 niños no infectados fueron negativos mientras que 13 niños infectados fueron positivos a la prueba de FAST-ELISA. Doce de los niños infectados serorevirtieron con disminución de anticuerpos cuatro meses luego de terapia con dehidroemetina. Estos resultados indican la utilidad de la prueba de FAST-ELISA para detección de infección y predicción de cura en niños con fasciolosis.
       
  • EPIDEMIOLOGICAL EVALUATION OF THE ELISA AND WESTERN BLOT TECH- NIQUES IN
           THE DIAGNOSIS OF SHEEP HYDATID DISEASE IN THE XI REGION OF CHILE

    • Abstract: With the purpose of optimising the diagnosis of sheep hydatidosis in the XI Region of Chile and contributing to the sero-epidemiological study of this disease, ELISA and Electroimmuno Transfer (E.I.T.) were standarizated and evaluated technical and epidemiologicaly as a screening and reference tests, respectively. A raw extract of proteins taken from hydatid fluid of hepatic ovine cysts was used as antigen for ELISA and a fraction of enriched antigen B was used for E.I.T. The standarization of both tecniques was performed with positive and negative sera from sheeps confirmed by macroscopical inspection in slaugtherhouses and histopatology examination. The evaluation was done in 95 sera samples: 54 with confirmed hydatidosis, 11 sheeps with other ethiologies and 30 sera from apparently healthy animals. ELISA and E.I.T. presented a 83.3% and 97.6% of sensitivity, 75.6% and 100% of specificity, respectively. The Predectives Values, Positive (VPP) and Negative (VPN) are applicable to the Regional prevalence.Con el propósito de optimizar el diagnóstico de la hidatidosis ovina en la XI Región de Chile, y contribuir a los estudios seroepide-miológicos de esta enfermedad, se estanda-rizaron y evaluaron técnica y epidemioló-gicamente ELISA y E.I.T. como pruebas de tamiz y referencia, respectivamente. Un extracto crudo de proteínas obtenidas de líquido hidatídico proveniente de quistes ovinos hepáticos fue usado como antígeno para ELISA y una fracción de antígeno B enriquecido se utilizó para E.I.T. La estandarización de ambas técnicas fue realizada con sueros ovinos positivos y negativos confirmados por inspección macroscópica en mataderos y examen histopatológico. La evaluación fue realizada en 95 muestras de sueros: 54 con hidatidosis confirmada, 11 ovinos con otras etiologías y 30 sueros de animales aparentemente sanos. ELISA y E.I.T. presentaron un 83,3% y 97,6% de sensibilidad y un 75,6% y 100% de especificidad, respectivamente. Obteniéndose Valores Predictivos, tanto Positivo (VPP) como Negativo (VPN) aplicables a la prevalencia Regional.
       
  • DETERMINATION ON THE THERMAL REQUIREMENT TO THE POS-EMBRIONARY DEVELOPMENT
           OF Lucilia Cuprina (WIED., 1830) (DIPTERA: CALLIPHORIDAE)

    • Abstract: The objetive of this study was to analyze the post-embrionary development of Lucilia cuprina under different temperatures (20, 25, 30 and 35ºC), in order to determine the thermal constant of the different phases of this life cycle under laboratorial conditions. Thirty larva newly hatched were transfered to plastic recipients, containing 60 g of equine meat previously maitained 24 hours under 27ºC. After that, the recipients were kept in climatized chamber under different temperature. Each treatment was perfomed with three repetitions. The intersection of regression rate of the larval development shows that the temperature base was 10,35 and 10,13ºC, respectively, corresponding to the thermal constant 121,57 and 167,87 GD, respectively. The recognition of the thermal preference allowed us to determine that the larval development of L. cuprina on a diet of equine meat, at 25ºC, was the most adequate to the rearing of this diptera or under laboratoral conditions.O objetivo deste trabalho foi analisar o desenvolvimento pós-embrionário de Lucilia cuprina em diferentes temperaturas (20, 25 30 e 35º C), para determinar a constante térmica das diferentes fases do seu ciclo biológico, em condições de laboratório. Trinta larvas recém-eclodida foram transferidas para recipiente plástico, contendo 60 gramas de carne eqüina, previamente mantida por 24 horas sob temperatura de 27º C. Em seguida, estes recipientes foram alocados em câmara climatizada nas diferentes temperaturas. Cada tratamento constou de três repetições. A interseção da regressão da taxa de desenvolvimento larval e pupal mostra que a temperatura base foi de 10, 35 and 10,13 º C, respectivamente, correspondendo às constantes térmicas de 121,57 e 167,87 GD, respectivamente. O reconhecimento da predileção térmica, permite-nos assumir que o desempenho das larvas de L. cuprina em dieta a base de carne equina de 25º C foi a mais adequada à criação deste díptero em laboratório.
       
  • On the ultrastructure of Trichomonas vaginalis: cytoskeleton, endocytosis
           and hydrogenosomes

    • Abstract: This paper is focused on the study of the ultrastructure of Trichomonas vaginalis in liquid cultures. Its cytoskeleton, the morphology of its hydrogenosomes, and endocytosis phenomena have been observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). For the present study, the traditional techniques for SEM and TEM have been slightly modified for the processing of this flagellate. Following our experiments, it can be concluded that: 1. The modified techniques are adequate for the ultrastructural study of this protozoon. 2. There are no mitochondria in T. vaginalis. 3. T. vaginalis might use micropinocytosis processes related to coated vesicles as a habitual endo- and exocytosis mechanism, while phagocytosis is observed for major vesicles. 4. As to the cytoskeleton, microtubules are numerous and display different structures, which are analyzed in this paper. 5. Many hydrogenosomes are found in the cytoplasm of T. vaginalis underneath the undulating membrane and along the axostyle, each with electron-dense deposits in the manner of «operculums.»El presente estudio está referido a la ultraestructura de Trichomonas vaginalis, cultivadas en medio líquido. Su citoesqueleto, fenómenos de endocitosis y la morfología de sus hidrogenosomas fueron observados por microscopía electrónica de barrido y de transmisión. Las técnicas clásicas para el procesamiento al SEM y TEM de este flagelado, fueron discreta y sutilmente modificadas por nosotros. Como resultado de nuestras experiencias se concluye que: 1. Las técnicas modificadas empleadas son adecuadas para el estudio morfológico y ultraestructural de este Protozoo. 2. Al TEM su citoplasma no muestra mitocondrias. 3. Utiliza los fenómenos de micropinocitosis asociados con vesículas con cubierta como mecanismo habitual de endo y exocitosis selectiva, mientras que para partículas mayores la fagocitosis es frecuentemente vista. 4. Con referencia al citoesqueleto, los microtúbulos que recorren el parásito son numerosos, conformando estructuras diversas, las cuales son analizadas en este trabajo. 5. Posee numerosos hidrogenosomas alineados debajo de la membrana ondulante y a lo largo del axostylo, mostrando importantes depósitos electrón-denso a modo de «opérculo» en cada uno.
       
  • EPIDEMIOLOGICAL SURVEY OF Toxocara canis IN RECREATIONAL PARKS OF SAN JUAN
           DE LURIGANCHO DISTRICT, LIMA-PERU

    • Abstract: In this survey was carried out an epidemiological study of Toxocara canis in populous areas of the city of Lima - Peru. Soil samples were collected in five points of each one of 17 recreational parks belonged to eigth communities from San Juan of Lurigancho district, between April to June of 1998 and also January of 1999. The parks were clustered in humid and fairly dry according to their percentage of humidity presented. The technique employed for this parasitological research was the method of Willis, modified in the laboratory. The obtained results point out the presence of eggs of T. canis in 70,6% of the studied parks, including infective forms. There were not differences statistically significant between fairly dry and humid parks in relation to the presence of the parasite. The high frequency of contamination found in the analysed parks obligate the promotion of sanitary education in this community to avoid the risks of contamination with infective forms of T. canis in children and young those employ these parks.En el presente trabajo se realizó un estudio epidemiológico de T. canis en zonas populosas de la ciudad de Lima - Perú. Se colectaron muestras de tierra en cinco puntos de cada uno de 17 parques recreacionales de ocho comunidades del distrito de San Juan de Lurigancho, de abril a junio de 1998 y enero de 1999. La técnica empleada para el estudio parasitológico fue el método de Willis, con modificaciones. Los resultados obtenidos señalan la presencia de huevos de T. canis en el 70,6% de los parques estudiados, encontrándose inclusive formas infectivas. No se encontraron diferencias estadísticamente significativas entre los parques medianamente secos y los húmedos con relación a la presencia del parásito.
       
  • DYNAMIC OF GASTROINTESTINAL PARASITE INFECTION LEVELS IN GRAZING CATTLE

    • Abstract: A total of 54 young cattle were monthly submitted, during 1 year to coprological (Mac Master technique) and hematogical (microhematocrit) examination. Statistical differences in the fecal egg count (epg) of strongylids was found between sexes, corresponding the highest values to the males (P
       
  • COPROPARASITOLOGIC PROFILE OF CAPTIVE WILD MAMMALS IN PERNAMBUCO STATE,
           BRAZIL

    • Abstract: The wild animals are hosts of a large number of internal and external parasites which interfere in the performance of this animals in captivity. The aim of this study was to identify the gastrointestinal parasites of captive wild mammals from Parque Dois Irmãos, located in Recife city, Pernambuco state, Brazil. Fresh faecal samples of 62 mammals of the Artiodactyla (n=08), Carnivora (n=20), Perissodactyla (n=03), Primates (n=29) and Rodentia (n=02) orders were analyzed by direct, spontaneous sedimentation and flotation techniques. Among the 62 animals 46 (74.2%) showed positive results for helminths and/or protozoa, distributed at follows: 22 (75.9%) Primates, 19 (95.0%) Carnivora, 03 (35.7%) Artiodactyla, and 02 (100.0%) Rodentia. All the Perissodactyla showed negative results. The prevalence of poliparasitism was 90.7% and the gastrointestinal parasites identified were: Strongyloides fulleborni, Strongyloides sp, Baylisascaris sp, Toxascaris leonina, Trichuris vulpis, Trichuris sp, Ascaridoidea, Strongyloidea, Spiruroidea, Ancylostomatidae, Trematoda, Balantidium coli, Entamoeba coli, E. histolytica, Giardia sp and Coccidia. The spontaneous sedimentation technique was the most efficient in detecting gastrointestinal parasites ova, cysts and oocysts in faeces of the animals studied. This is the first record of gastrointestinal parasites in captive wild mammals in Pernambuco state, Brazil.A través de los métodos directo, de sedimentación y de flotación fueron analizadas muestras fecales de 62 mamíferos de las órdenes Artiodactyla (n=08), Carnivora (n=20), Perissodactyla (n=03), Primates (n=29) y Rodentia (n=02) mantenidos en cautiverio en el Parque Dois Irmãos, Recife, Pernambuco, Brasil. De los 62 animales analizados, 46 (74,2%) estaban parasitados de los cuales 22 (75,9%) pertenecían al orden Primates, 19 (95,0%) al orden Carnivora, 3 (37,5%) al orden Artiodactyla, y 2 (100%) al orden Rodentia. Los animales del orden Perissodactyla presentaron resultados negativos en todas las muestras analizadas. El poliparasitismo tuvo prevalecía de 90,7% y los parásitos gastrointestinales diagnosticados fueron Strongyloides fulleborni, Strongyloides sp, Baylisascaris sp, Toxascaris leonina, Trichuris vulpis, Trichuris sp, Ascaridoidea, Strongyloidea, Spiruroidea, Ancilostomídeos, Trematoda, Balantidium coli, Entamoeba coli, E. histolytica, Giardia sp y Coccídios. El método de sedimentación espontánea demostró ser el más eficiente en la detección de los parásitos gastrointestinales
       
  • CUTANEOUS MYASIS DUE TO Dermatobia hominis. PRESENTATION OF 4 CASES
           IN A FAMILY GROUP

    • Abstract: A chilean family traveled to Cuba and to a rainforest region in Panamá. At return to Chile they presented with painful erythematous swollen skin papules along their dorsum and thighs. The diagnosis of foruncular myiasis was made after identifying larvae of Dermatobia hominis by morphology. Three of the patients healed 2 days after surgical removal of the larvae and one of them healed after two weeks.Se presentan cuatro casos de myiasis forunculosa en un grupo familiar que viajó a Cuba y a regiones selváticas de Panamá. A su regreso a Chile, notaron lesiones cutáneas solevantadas, eritematosas y dolorosas, en cuyo interior se encontraron larvas de mosca de Dermatobia hominis, confirmadas por estudio morfológico. El tratamiento consistió en la extracción quirúrgica o manual de las larvas complementada con tratamiento antibiótico. Uno de los pacientes evolucionó tórpidamente y tres restantes favorablemente.
       
  • ECOLOGICAL ASPECTS OF THE INFRAPOPULATIONS OF Cucullanus genypteri
           (NEMATODA: CUCULLANIDAE) PARASITIC ON PINK CUSK-EEL, Genypterus
           brasiliensis (OSTEICHTHYES: OPHIDIIDAE) FROM COSTAL ZONE OF THE STATE OF
           RIO DE JANEIRO, BRASIL

    • Abstract: Between September of 2000 and January of 2001, 55 specimens of pink cusk-eel, Genypterus brasiliensis Regan, 1903 were captured from the coastal of the State of Rio de Janeiro, Brazil (aprox. 21-23° S, 41-45° W), and necropsied to study their cucullanid nematode. All fishes were parasitized for Cucullanus genypteri Sardella, Navone & Timi, 1997. A total of 1312 parasites were collected, with average of 23.8/fish. The cucullanid nematode of G. brasiliensis showed a typical pattern of distribution. Cucullanus genypteri showed an increase in abundance in relation to the host size. The sex of host did not influence the abundance of C. genypteri.Entre septiembre de 2000 y enero de 2001 fueron necropsiados 55 especimenes de congrio rosado, G. brasiliensis procedentes de la costa del estado del Río de Janeiro (21-23° S, 41-45° W), Brasil. Todos los congrios examinados estaban parasitados por C. genypteri, colectándose un total de 1.312 especimenes; con abundancia media de 23,8 ± 26,7. Cucullanus genypteri presentó un típico patrón de distribución sobredispersa o contagiosa. La abundancia de C. genypteri presentó correlación positiva con el tamaño corporal del hospedador. El sexo de los peces no influenció en la abundancia del parásito.
       
  • Prevalence of Tetratrichomonas didelphidis from the Opossum Didelphis
           albiventris in the Botanical Garden, Porto Alegre, Rio Grande do Sul,
           Brazil

    • Abstract: Tetratrichomonas didelphidis (Hegner and Ratcliffe 1927) Andersen and Reilly 1965 is a flagellate protozoan from the intestine, cecum and colon of Didelphis marsupialis Linnaeus, 1758. The prevalence of T. didelphidis in opossums D. albiventris was studied in the Botanical Garden, Porto Alegre City in the southernmost Brazilian State, Rio Grande do Sul, Brazil. T. didelphidis was found in seven of eight cultures of swabbed rectums, representing a prevalence of 87.5% in D. albiventris. In the present investigation it was observed that the T. didelphidis found in the intestine content of D. albiventris had the same morphological characteristics as those previously described by other authors in the D. marsupialis, being probably the same protozoan species in both host species.
       
  • Hepatoxylon trichiuri (HOLTEN,1802) DOLLFUS, 1942, HEPATOXYLIDAE DOLLFUS,
           1940 (EUCESTODA: TRYPANORHYNCHA) OF Prionace glauca (LINNAEUS, 1758) FROM
           THE COAST OF STATE OF RIO GRANDE DO SUL, AND OF Coryphaena hippurus
           LINNAEUS, 1758 FROM THE COAST OF STATE OF RIO DE JANEIRO, BRAZIL

    • Abstract: The prevalence was 86.4 % and mean intensity of infection was 9.1 of Hepatoxylon trichiuri of Prionace glauca, captured of the coastal waters of state of Rio Grande do Sul, and the prevalence was 4.9% and intensity of infection was 1.0 of Coryphaena hippurus, collected from a fish market of state of Rio de Janeiro. Hepatoxylon trichiuri was recorded by the first time of Prionace glauca in Brazil.Foi registrada prevalência de 86,4% e intensidade média de infecção de 9,1 de Hepatoxylon trichiuri em espécimes de Prionance glauca, capturados do litoral do estado do Rio Grande do Sul e prevalência de 4,9% e a intensidade de infecção de 1,0 em espécimes de Coryphaena hippurus, coletados de um mercado de peixes do estado do Rio de Janeiro. Este foi o primeiro registro de H. trichiuri em P. glauca no Brasil.
       
  • Babesia ernestoi, SYNONYM OF Babesia brasiliensis
           
    DIDELPHIDAE MARSUPIALS HEMOPARASITE

    • Abstract: Babesia ernestoi, the second specie of this genus described in South American opossums, have your characterization based on 2 morphological (dimension and stage morphology) and 2 biological aspects (parasitemy level and host specificity). These aspects are discussed and compared with those of Babesia brasiliensis, the other Babesiidae parasite of these hosts, being proposed that B. ernestoi be considered junior synonym of Babesia brasiliensis.Babesia ernestoi, la segunda espécie de este género descrita en marsupiales Sur Americanos, su caracterización estuvo basada en 2 aspectos morfológicos (dimensión y morfología) y 2 aspectos biológicos (nivel de parasitemia y especificidad por el hospedador). Estos aspectos son discutidos y comparados con los de la Babesia brasiliensis, otro parasito babesídeo de estos hospedadores, proponiendose que la B. ernestoi seja considerada sinonímia júnior de B. brasiliensis.
       
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