In the African buffalo (Syncerus caffer) population of the Kruger National Park (South Africa) a primary sex-ratio distorter and a primary sex-ratio suppressor have been shown to occur on the Y chromosome.A subsequent autosomal microsatellite study indicated that two types of deleterious alleles with a negative effect on male body condition, but a
El artículo presenta un análisis de las dos Conferencias de Población realizadas en Bucarest y El Cairo, en las cuales se han debatido aspectos fundamentales, relacionados con el tamaño de la población mundial, la construcción de sociedad y familia y el respeto de los derechos humanos, entre otros.Estas conferencias marcan un hito importante
Established taxa within the Enterobacteriaceae wereisolated from cloacal swabs of Strix aluco chicks in nest boxes located at five research sites.ChromID ESBL medium (bioMerieux) was used to select a pool Goalie - Skates - Intermediate of Enterobacteriaceae strains producing extended-spectrum beta-lactamases.Drug sensitivity of the chosen strains w
Abstract Background Knowledge of the relative abundance and biting rates of riverine Wooden Blocks blackflies (vectors of onchocerciasis) is essential as these entomological indices affect transmission of the disease.However, transmission patterns vary from one ecological zone to another and this may be due to differences in species of blackfly vec