Browsing Artículos Científicos by Title
Now showing items 21-40 of 566
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Aislamiento, identificación y caracterización de hongos nematófagos depredadores nativos de Costa Rica
(Museo Nacional de Costa Rica, 2015)Tropical ecosystems provide biological resources with potential to be used in agricultu- re, for example, the predatory nematophagous fungi (PNF), which can be used as biological control agents of parasitic nematodes ... -
Amblyomma scutatum Neumann, 1899 (Ixodida: Ixodidae) parasitizing Ctenosaura similis (Gray, 1831) (Squamata: Iguanidae) in Costa Rica
(RESEARCH NOTE, 2023-07-31)A total of 38 ticks were collected on black spiny-tailed iguana, Ctenosaura similis, in a secondary dry forest from northern lowlands of Guanacaste, Costa Rica. At the time of finding, the animal has not mobility of the ... -
An Anatomical and Radiographic Study on the Vertebral Column of the Two-Toed Sloth (Choloepus hoffmanni)
(Universidad Nacional, Costa Rica, 2021-04-23)El Choloepus hoffmanni es un mamífero del superorden Xenarthra que se distribuye desde América Central hasta América del Sur. Estos animales comúnmente llegan a los centros de atención y valoración de fauna silvestre ... -
An electrophoretic study on phospholipase A2 isoenzymes in the venoms of Central American crotaline snakes
(Elsevier, 1992)The number and isoelectric points of phospholipase A2 isoenzymes were studied in the venoms of 12 Central American crotaline snakes of the genera Bothrops, Crotalus, Lachesis and Agkistrodon. The study was carried out by ... -
An environmental niche model to estimate the potential presence of venezuelan equine encephalitis virus in Costa Rica
(International Journal of Environmental Research and Public Health, 2020-12-30)Venezuelan equine encephalitis virus (VEEV) is an arbovirus transmitted by arthropods, widely distributed in the Americas that, depending on the subtype, can produce outbreaks or yearly cases of encephalitis in horses ... -
Analysis of ORF5 sequences of Porcine Reproductive and Respiratory Syndrome virus (PRRSV) circulating within swine farms in Costa Rica
(BMC Veterinary Research, 2021-06-12)Background: Worldwide, Porcine Reproductive and Respiratory Syndrome (PRRS) is among the diseases that cause the highest economic impact in modern pig production. PRRS was first detected in Costa Rica in 1996 and has since ... -
Analysis of TcdB proteins within the hypervirulent clade 2 reveals an impact of RhoA glucosylation on Clostridium difficile proinflammatory activities
(Infection and Immunity, 2016-03)Clostridium difficile strains within the hypervirulent clade 2 are responsible for nosocomial outbreaks worldwide. The increased pathogenic potential of these strains has been attributed to several factors but is still ... -
Analysis of test day yield data of Costa Rican dairy cattle
(Elsevier, 1998)Estimates of variance components for test day records in an animal model that considered multiple traits over multiple lactations were calculated using REML methodology. Test day records were classified into 11 periods ... -
Analysis of the association between density of Helicobacter spp and gastric lesions in dogs
(American Journal of Veterinary Research, 2017-12)OBJECTIVE To evaluate the correlation between the density of native gastric Helicobacter spp and the presence of gastric lesions in dogs. ANIMALS 80 dogs of various breeds, sexes, and ages. PROCEDURES Gastroscopic and ... -
Analysis of the most common causes of viscera condemnation in pigs (liver, kidney, heart), in a slaughterhouse of Costa Rica, and its economical implication
(M. & H. Schaper GmbH & Co., 2011)This is an analysis of the causes and costs of rejection of viscera from the daily post-mortem meat inspection records from a slaughterhouse located in the Metro politan area of the Central Valley. The records examined ... -
Anatomía del sistema respiratorio y del corazón del perezoso (Choloepus hoffmanni) de Costa Rica
(Universidad Nacional, Costa Rica, 2021-04-12)The two-toed sloth (Choloepus hoffmanni) faces various diseases related to the respiratory and circulatory system. Thus, prior knowledge of anatomy becomes relevant since it contributes to the study and ... -
Análisis de las causas más frecuentes de decomisos de vísceras en cerdos, en un matadero de Costa Rica y su implicación económica
(Revista Porcicultura Iberoamericana, 2011) -
Análisis descriptivo de las condiciones de conservación de un sitio de forrajeo de la tortuga verde del Pacífico (Chelonia mydas agassizii, Testudines: Chelonioidea) en el Golfo Dulce, Costa Rica; se toma como base el estado de salud de la tortuga y el hallazgo de plaguicidas en el ambiente / Descriptive analysis of the conservation conditions of a foraging site for the Pacific green turtle (Chelonia mydas agassizii, Testudines: Chelonioidea) in Golfo Dulce, Costa Rica, based on the turtle’s state of health and the discovery of pesticides in the environment
(Universidad Nacional, Costa Rica, 2015-12-11)El desarrollo de estrategias de manejo, que permitan la conservación de las tortugas marinas y del Golfo Dulce, requiere de insumos relacionados con la condición actual de la salud de estas poblaciones. Diversos estudios ... -
Anopheles albimanus (Diptera: Culicidae) Ensemble Distribution Modeling: Applications for Malaria Elimination
(MDPI, 2022)In the absence of entomological information, tools for predicting Anopheles spp. presence can help evaluate the entomological risk of malaria transmission. Here, we illustrate how species distribution models (SDM) could ... -
Anthelmintic resistance in commercial sheep farms in Costa Rica
(Elsevier B.V., 2021)Forty-eight commercial sheep farms were sampled between the years 2017 and 2019 to evaluate the percentage of reduction of the three families of broad-spectrum anthelmintic drugs available in Costa Rica - benzimidazoles ... -
Antigenic relationship between the animal and human pathogen Pythium insidiosum and nonpathogenic Pythium species
(American Society for Microbiology, 1987)Identification of the newly named pathogenic oomycete Pythium insidiosum and its differentiation from other Pythium species by morphologic criteria alone can be difficult and time-consuming. Antigenic anaysis by ... -
Antimicrobial activity of myotoxic phospholipases A2 from crotalid snake venoms and synthetic peptide variants derived from their C-terminal region
(Elsevier, 2005)A short peptide derived from the C-terminal region of Bothrops asper myotoxin II, a Lys49 phospholipase A2 (PLA2), was previously found to reproduce the bactericidal activity of its parent molecule. In this study, a panel ... -
Antimicrobial activity of the heliangolide chromolaenide and related sesquiterpene lactones
(Pergamon Press, 1980)Some sesquiterpene lactones are known to exhibit antimicrobial activity [1, 2]. More recently, it has been noted that the pseudoguainolide carpesiolin inhibits the growth of Xanthomonas oryzae [3]. Here, we report on ... -
Antimicrobial resistance and genetic diversity of Campylobacter spp. isolated from broiler chicken at three levels of the poultry production chain in Costa Rica
(International Association for Food Protection, 2021-07-29)Campylobacter spp. are considered the most common bacterial cause of human gastroenteritis, one of the four main causes of diarrheal disease worldwide, and they are one of the main foodborne pathogens causing hospitalizations ... -
Antimicrobial resistance genes in pigeons from public parks in Costa Rica
(Blackwell Verlag GmbH, 2017)Antimicrobial resistance is known to be an emerging problem, but the extent of the issue remains incomplete. The aim of this study was to determine the pres- ence or absence of nine resistance genes (blaTEM, catI, mecA, ...