| gnathostomatidae nematode parasite of colomesus psittacus (osteichthyes, tetraodontiformes) in the ilha de marajó, brazilian amazon. | the genus gnathostoma comprises 17 species, whose adult specimens are found in the stomach serosa of animals that consume raw fish; some species of the genus are zoonotic agents. the present study describes the presence of a nematode (gnathostomatidae) parasitizing the digestive tract of colomesus psittacus in the ilha de marajó in the eastern brazilian amazon. thirty specimens of c. psittacus were collected in the municipality of soure, ilha de marajó, state of pará, brazil, transported to the ... | 2017 | 28977248 |