2015-05-182015-05-182010-02ALMEIDA, MP. et al. Diet of the freshwater stingray Potamotrygon motoro (Chondrichthyes: Potamotrygonidae) on Marajó Island (Pará, Brazil). Brazilian Journal of Biology, São Carlos, v. 70, n. 1, p. 155-162, fev. 2010. Disponível em: <http://www.scielo.br/pdf/bjb/v70n1/22.pdf>. Acesso em: 22 abr. 2015. <http://dx.doi.org/10.1590/S1519-69842010000100022>.1519-6984https://repositorio.ufpa.br/handle/2011/6679The stomach contents of 137 examples of Potamotrygon motoro caught in 3 locations (Muaná, Afuá and Lake Arari) on Marajó Island were analysed. The values of the Index of Relative Importance (IRI) and its respective percentage (%IRI) were calculated. The level of repletion 1 (¼ full) was the most representative for both sexes, as well as for immature and mature specimens. Most of the food items found were well-digested. The food items identification indicated the presence of 15 orders, including insects, mollusks, crustaceans, annelids and fish. Differences in diet were observed among the locations studied when comparing %IRI, crustaceans being the most preferred in Afuá, fish in Lake Arari and mollusks in Muaná.engAcesso AbertoPeixeRaia de água doceDietaChondrichthyesEstuáriosIlha de Marajó - PAPará - EstadoAmazônia brasileiraArtigo de Periódico