). Thus, wild felids and domesticated cats may spread T. gondii oocysts in the environment. A cat may excrete millions of oocysts and oocysts can remain viable at 15–35 °C from 32 days to about a year ( Dubey, 2010). The climate in the region is tropical humid, favoring the viability of oocysts. The Amazon River dolphin feeds on fish ( Best and da Silva, 1993) and many of these fishes feed on shellfish. Although T. gondii does not multiply in cold blooded animals aquatic invertebrates and fish can be transport host

at T. gondii oocysts ( Lindsay et al., 2001, Arkush et al., 2003, Miller et al., 2008, Esmerini et al., 2010 and Massie et al., 2010). I. geoffrensis live in rivers where there is a significant seasonal variation in water level, with check details annual average amplitude of 10.6 m ( Ramalho et al., 2009). The seasonal variation in water levels directly influences the habitat distribution and density of botos ( Martin and da Silva, 2004a). Variations in the density

of botos PD0332991 are substantially due to fish migration, dictated by changes in water level and concentrations of dissolved oxygen. These dolphins use preferably occupy the margins of main rivers, streams and lakes ( Martin and da Silva, 2004a). None of the cities or riverside communities of the region have a sewage treatment system, facilitating the contact of these animals with the polluted waters, especially during the dry season when the water level is low and animals are more concentrated. During floods, dolphins are scattered in areas of flooded forests ( Martin and da Silva, 2004b), which can become infected by oocysts from feces of wild cats living in the Reserve. The Amazon River dolphin is a long-lived animal at the top of the food chain, and is therefore a sentinel of environmental contamination (Lailson-Brito et al., 2008). The species inescapably lives in close proximity to man, and consumes some of the same food. The results suggest a possible contamination by T. gondii oocysts in the aquatic environment where these animals live. We thank the interns

of Projeto Boto for their help in capture of animals, collection and analysis of data and the fisherman team for their dedication and care and handling the animals. This paper Astemizole is part of the collaboration agreement between Instituto Nacional de Pesquisas da Amazônia/MCT and Instituto de Desenvolvimento Sustentável Mamirauá-OS/MCT. We gratefully acknowledge funding from Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq), Instituto Nacional de Pesquisas da Amazônia (INPA) and Petrobrás Ambiental. “
“The authors regret that there were errors in the ELISA percentages in Table 1, which required correction of the results presented in Table 2, and Table 3 and the model. The corrections appear as follows.