We report the finding of cysts and larvae of Strongyluris in specimens of L. fulica from an urban area of the municipality of Maringá in northern Paraná State, southern Brazil. Thirty-seven young adult snails were collected at three sites: 15 in riparian forest; 14 in a vegetable garden; and eight in a residential garden. We found a total of 16 cysts with nematode larvae in three of the 15 snails collected in riparian forest. The parasites were identified as larvae of the genus Strongyluris, which are parasites of the gastrointestinal tract of amphibians and reptiles. Lissachatina fulica is established in urban areas of 33% of the municipalities of the state of Paraná. The species has spread rapidly through the urban area of the municipality of Maringá, which may contribute to the transmission of nematode larvae of medical and veterinary interest to humans and other animals.
Keywords: Invasive snail; Parasitic nematode; Urban environments.
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