“…Thus, knowing aspects of its ecology and geographical distribution becomes very important for the data production to be used as a basis for bioassessment research and for public health issues, since Lumbriculus variegatus (Müller, 1774) (Lumbriculidae, Clitellata) was identified in as the intermediate host of Dioctophyme renale (Goeze, 1782) (Nematoda, Dioctophymatidae) (Mace and Anderson, 1975). Dioctophyme renale has a worldwide distribution and can affect dogs, cats, wild mammals and even human (Mascarenhas et al, 2018) being characterized as zoonosis (Pedrassani and Nascimento, 2015). The life cycle of parasite occurs through the ingestion of eggs by Lumbriculus variegatus, which is the only intermediate host essential for the continuation of the cycle.…”