ABSTRACT: The brown howler monkey (Alouatta guariba clamitans) is a primate species widely distributed in South America. Infections by protozoa are common primates. However, studies on primates Brazil scarce, so the goal of this study was to investigate DNA from apicomplexan Neospora caninum, Sarcocystis spp. and Toxoplasma gondii tissues A. clamitans. extraction performed tissue samples heart,...

A common strategy to identify new antiparasitic agents is the targeting of proteases, due their essential contributions parasite growth and development. Metacaspases (MCAs) are cysteine proteases present in fungi, protozoa, plants.

A complete analysis of the macroand microzooplankton of a warm monomictic lake indicates that Protozoa dominate the community numerically. During winter mixis, ciliates are found at densities of 1-8x 103.1iter-' and constitute up to 32% of the zooplankton community biomass. With summer stratification crustaceans decline, while both the relative and absolute abundance of protozoans and rotifers ...