Occurrence of BIOMPHALARIA GLABRATA and PHYSA ACUTA (gastropoda: mollusca) snails in Quinta da Boa Vista municipal park, Rio de Janeiro, RJ, Brazil

The human species has an emotional connection with nature called “biophilia” (or, love for life). This connection goes from generation to generation, being one of the reasons why green spaces are present in large cities. Quinta da Boa Vista is a municipal park in Rio de Janeiro located in the Sao Cristovao neighborhood in the northern part of the city. Its main attraction is the artificial lake system, a leisure attraction for the local community. This article reports the presence of Biomphalaria glabrata and Physa acuta snails around the main lake in the Quinta da Boa Vista Municipal Park in Rio de Janeiro, RJ. Seventy-one B. glabrata and twenty-seven P. acuta snails were collected. The snails were measured and examined for the presence of trematode larvae according to standardized procedures. The prevalence rate of B. glabrata was estimated at 15.5%. Rediae and cercariae resembling those of the species Typhlocoelum cucumerinum (Typhlocoelidae, Digenea) which parasitizes aquatic birds of the order Anseriformes were found. This study reinforces the importance of monitoring park lakes and ponds to better understand the risk of helminth transmission by molluscan vectors.KEY WORDS: Snails; Schistosomiasis; Digenea; Quinta da Boa Vista; Rio de Janeiro.