RESUMEN
Thirty-eight taxa of Zygomycetes distributed in 15 genera were recorded from tapir (Tapirus terrestris), camel (Camelus bactrianus), horse (Equus caballus), deer (Cervus elaphus), agouti (Dasyprocta aguti), donkey (Equus asinus), llama (Llama glama) and waterbuck (Kobus ellipsiprymnus) dung collected at the Reserva Ecológica de Dois Irmãos located in Recife, State of Pernambuco, Northeast Brazil. The samples were collected on a monthly basis from June 2005 to May 2006, taken to the laboratory and incubated in moist chambers. Higher number of taxa was observed in the excrements of tapir, followed by deer and donkey. The highest number of species was detected for Mucor, followed by Pilobolus. Statistical analyses showed significant differences in richness of Zygomycetes taxa between the herbivore dung types. Differences of species composition, however, were weak. Seasonality influenced the Zygomycetes species composition but not its richness. Variations in taxa composition between ruminants and non-ruminants dung were non significant.
Asunto(s)
Secuencia de Bases , Bombyx/genética , Cactaceae/genética , Susceptibilidad a Enfermedades , Quitosano/aislamiento & purificación , Reactivadores Enzimáticos/análisis , Serratia marcescens/genética , Serratia marcescens/aislamiento & purificación , Activación Enzimática , Métodos , Métodos , VirulenciaRESUMEN
Microbial colonies were replicated on YNB© agar plates overlaid with soft agar containing the glucose-oxidase/peroxidase (BIOTROLr) system. The pink color developed around the colonies was the result of the reaction of this enzyme. This method proved to be very convenient for testing hundreds of colonies grown on agar plates for (beta)-galactosidase secretion by microbial cells.
Asunto(s)
beta-Galactosidasa , Pruebas Enzimáticas Clínicas , Técnicas In Vitro , Reactivadores Enzimáticos/análisis , Hidrólisis , MétodosRESUMEN
Un método para poner de manifiesto anticuerpos específicos en suero es la variante indirecta de la técnica de ELISA, en la cual un problema habitual es la absorción inespecífica de las inmunoglobulinas del suero a la fase sólida del sistema, lo que dificulta la interpretación correcta de los resultados. En este trabajo se analiza la función que desempeñan varios factores involucrados en la técnica, y con base en los resultados obtenidos se proponen algunas recomendaciones generales para su buen uso