Now showing items 1-16 of 16

    • 15 años sin plaga de gusano barrenador 

      Núñez, Johnny (Universidad Nacional, Costa Rica, 2016-07-07)
      Un convenio de cooperación entre los países centroamericanos y los Estados Unidos, marcó el inicio de la erradicación de la mosca Cochiliomya hominivorax más conocida como gusano barrenador. Esta larva causó pérdidas ...
    • Case report: First documented case of cerebral angiostrongyliasis caused by Angiostrongylus costaricensis in a free-ranging opossum 

      Solorzano-Scott, Tamara; Aguilar-Vargas, Fernando; Cordero-Salas, Martha; Conejo, Amanda; Rojas, Alicia; Baldi, Mario (Frontiers, 2024-02-01)
      Angiostrongylus costaricensis is a metastrongyloid nematode that primarily infects the mesenteric arteries of wild rodents. This parasite is endemic in several regions of the American continent, and in humans, causes a ...
    • Climatic variability and landscape heterogeneity impact urban mosquito diversity and vector abundance and infection 

      HAMER, GABRIEL L.; WALKER, EDWARD D.; BROWN, WILLIAM M.; RUIZ, MARILYN O.; KITRON, URIEL D.; Chaves, Luis Fernando (Ecosphere, 2011-06-23)
      Urban habitat heterogeneity can modify interactions across species and lead to spatially fine grained differences in b-diversity patterns and their associated ecosystem services. Here, we study the impacts of landscape ...
    • Desparasitación selectiva Dirigida (DSD) en cabras 

      Torres Acosta, Juan Felipe J.; González Pech, Pedro G.; Pérez Cruz, Marissa; Canul-Ku, Hilda L.; Aguilar Caballero, Armando J.; Cámara Sarmiento, Ramón; Soto-Barrientos, Natalia (Comité Nacional Sistema Producto Caprinos, 2014-12)
      Los rumiantes que padecen infecciones severas de nematodos gastrointestinales (NGI) manifiestan signos clínicos como diarrea, pérdida de peso, cuello de botella (edema mandibular), anemia, debilidad y muerte. En la actualidad, ...
    • Disseminated toxoplasmosis in a captive porcupine (Coendou mexicanus) from Costa Rica 

      Peña, M. A.; Dubey, J. P.; Morales, Juan Alberto (American Society fo Parasitologists, 2016)
      An adult porcupine (Coendou mexicanus) from the National Zoo, San Jose, Costa Rica, died because of toxoplasmosis involving the heart, lungs, liver, and kidneys, Toxoplasma gondii was found in lesions and the diagnosis was ...
    • Editorial: Insights in infectious agents and disease: 2021 

      Cloeckaert, Axel; Guzman-Verri, Caterina (Frontiers Media S.A, 2023-07-10)
      The emergence and spread of infectious diseases with pandemic potential occurred trough human history, and were recently reviewed in the section Infectious Agents and Disease by Piret and Boivin (2021). Major pandemics and ...
    • Effect of neosporosis on productive and reproductive performance of dairy cattle in Costa Rica 

      ROMERO-ZUÑIGA, JUAN JOSÉ; Van Breda, S.; Vargas, Bernardo; Dolz, Gaby; Frankena, K. (Elsevier B.V, 2005-12)
      A cross-sectional study was conducted to assess the effect of neosporosis on productive and reproductive parameters in dairy cows. Cows (n = 2743) from 94 farms located in the most important dairy areas in Costa Rica were ...
    • Enfermedad de Chagas 

      Vargas Calvo, Valeria (Universidad Nacional, Costa Rica, 2020-11-12)
      El objetivo de este video es presentar una breve explicación sobre la enfermedad de Chagas, una zoonosis ocasionada por el protozoario Tripanosoma cruzi, que afecta a más de 100 mamíferos incluyendo al ser humano. Se señala ...
    • First report of bovine neosporosis in dairy cattle in Costa Rica 

      Pérez, E.; González, O.; Dolz, Gaby; Morales, Juan Alberto; Barr, B.; Conrad, P. A. (British Veterinary Association, 1998-05-09)
      NEOSPOROSIS has recently been recognised as a major cause of abortion in dairy cattle worldwide (Barr and others 1990, Duff and Otter 1994, Boulton and others 1995). The disease is caused by the protozoan parasite, ...
    • Indian Ocean Dipole drives malaria resurgence in East African highlands 

      Hashizume, Masahiro; Chaves, Luis Fernando; Minakawa, Noboru (SCIENTIFIC REPORTS, 2012-02-16)
      Malaria resurgence in African highlands in the 1990s has raised questions about the underlying drivers of the increase in disease incidence including the role of El-Nin ̃o-Southern Oscillation (ENSO). However, climatic ...
    • Indices de similitud entre taxocenosis de t1ebótomos (Diptera: Psychodidae) en un área endémica de leishmaniasis cutánea en Costa Rica 

      Herrero, Marco; Roja, Julio; Dobles, Alvaro; Jiménez Rocha, Ana Eugenia (Universidad de Costa Rica, 1993-12-01)
      A comparison of diversity between eight Costa Rican taxocenosis of phlebotorninae sandflies was made with the Sorensen sirnilarity coefficient. Sites Agua Blanca-Chirraca (C = 0.68), Ceiba Este-Chirraca (C = 0.66), La ...
    • Isolation of toxoplasma gondii from the keel-billed toucan (Ramphastos sulfuratus) from Costa Rica 

      Dubey, J. P.; Velmurugan, G. V.; Arguedasf, R.; Sut, C.; Morales, Juan Alberto (American Society of Parasitologists, 2009-04-01)
      Pectoral muscles from a captive keel-billed toucan (Ramphastos sulfuratus) from Costa Rica were fed to a Toxoplasma gondii– free cat, and the cat shed oocysts. Laboratory mice fed these oocysts developed antibodies to T. ...
    • Neospara caninum 

      Vargas Calvo, Valeria (Universidad Nacional, Costa Rica, 2020-09-05)
      El objetivo de este vídeo es presentar una breve explicación sobre la neosporosis, enfermedad de origen parasitario y su afección en los animales. Se indican sus consecuencias y alteraciones, formas de transmisión, control, ...
    • Prácticas de manejo y uso de antiparasitarios internos en fincas lecheras artesanales de Costa Rica 

      Luna-Tortós, Carlos; Cedeño Guevara, Humberto; Correa, M. (Universidad Nacional, Costa Rica, 2007)
      Con el objetivo de recabar información sobre las prácticas de manejo de antiparasitarios internos y el control de helmintos por parte de los productores, se implementó una encuesta en 60 fincas lecheras de Costa Rica durante ...
    • Reportan alta prevalencia de parásito abortivo en ovejas y cabras 

      Núñez Z., Johnny (Oficina de Comunicación, Universidad Nacional, 2019-03)
      El sector productivo nacional de pequeños rumiantes (ovejas y cabras) debe estar alerta. Una Investigación elaborada por especialistas de la Escuela de Medicina Veterinaria de la Universidad Nacional (EMV-UNA), con el apoyo ...
    • Ticks infesting humans in Central America: A review of their relevance in public health 

      Bermúdez C, Sergio; Domínguez A., Lillian; Troyo, Adriana; Venzal, José; Montenegro Hidalgo, Víctor Manuel (Elsevier, 2022)
      Ticks are blood-sucking arthropods that parasitize most groups of terrestrial or semiaquatic vertebrates. Humans are accidental hosts to the ticks; however, in humans the ticks can cause damages varying from simple ...