Reportamos los moluscos asociados a la valva derecha del ostión de roca Striostrea prismatica Gray, 1825. Un total doce valvas preservadas en alcohol al 96% fueron examinadas. Los las separados con ayuda un estereoscopio. Las analizadas tuvieron una longitud mínima 61.1 mm y máximo 84.2 mm. Se cuantificaron 164 valvas, representados por clases Gastropoda Bivalvia, 8 familias, 11 géneros, 12 esp...

This paper presents a distributed surveillance system to improve safety and security in public transport environments such as metropolitan railways, airports etc. The system is constructed by a set of modules that provide additional intelligence to detect potentially dangerous situations and provide more timely prevention and management of events. These modules include CCTV video processing, au...

We present a molecular phylogeny of snake genus Atractus, with an improved taxon sampling that includes 30 of the 140 species currently recognized. The phylogenetic tree supports the existence of at least three new species in the Pacific lowlands and adjacent Andean slopes of the Ecuadorian Andes, which we describe here. A unique combination of molecular, meristic and color pattern characters s...

Public transport systems play a vital role in the daily life of all citizens. There is a recognised need to shift transport patterns of usage from private means to public means as this has beneficial effects in terms of the environment, reduced road-related deaths and general quality of life. Public transport environments are complex ones involving a large number of people (passengers and staff...