RESUMEN
Mercury (Hg) is a highly toxic pollutant that endangers several marine animals, including green sea turtles (Chelonia mydas), particularly in their foraging grounds along Brazilian coastal waters. Environmental Hg levels differ along this extensive littoral, rendering mandatory Hg long-term assessments of the different Hg fate in different sectors of the Brazilian coast. This study quantifies total Hg concentrations in the liver and muscle of green sea turtle populations from three foraging coastal regions in northeastern Brazil and analyzes Hg concentration differences given the locality and size of 61 juvenile individuals sampled. The results showed wide variations in Hg concentrations in the liver (81-3135 ng g-1) and muscle (10.1-8569 ng g-1). There was no significant correlation between animal size and Hg concentrations. Also, no difference was found among areas, reflecting the opportunistic feeding habit of juveniles of this species. This suggests that, in the case of green turtles, the ontogenetic change of diet plays an important role in influencing Hg concentrations found in this species.
Asunto(s)
Mercurio , Tortugas , Contaminantes Químicos del Agua , Humanos , Animales , Brasil , Contaminantes Químicos del Agua/análisis , Monitoreo del Ambiente/métodos , Mercurio/análisis , Hígado/química , Músculos/químicaRESUMEN
Se realizó un estudio observacional, analítico y transversal, durante los meses de mayo y junio 1989, para la determinación de la presencia de bacterias patógenas en el área quirúrgica de gineco-obstetricia en el Centro Materno Infantil San Lorenzo, de Los Mina, Distrito Nacional, R. D. Se cultivaron muestras que fueron tomadas del personal médico, paramedico y del área quirúrgica (equipos hospitalarios, instrumental quirúrgico y ambiente del quirófano), de donde se tomaron 25 cultivos, 10 en el personal mencionado y 15 en el área quirúrgica. En total hubo crecimiento en 8 cultivos para un 32 por ciento , todos ellos bacilos gram negativos