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This study made a survey on the ciliate protozoans from Peritrichid and Suctorian taxa, epibionts of Pomacea lineata (Spix, 1827) (Ampullariidae). Fifty mollusks were collected in places of irrigation ditches and shell was scraped with a scalpel and the extracted material was analyzed in vivo by light microscopy. All examined mollusks presented epibiont ciliates on their shells. For the first time epibiont ciliates in P. lineata was record. Seven genera of ciliates: five peritrichids and two suctorians, were identified and classified within the subclass Peritrichia: Carchesium Ehrenberg, 1838 (Vorticellidae), Epistylis Ehrenberg, 1830 (Epistylidae), Opercularia Stein, 1854 (Operculariidae), Vaginicola Lamarck, 1816 (Vaginicolidae) and Vorticella Linnaeus, 1767 (Vorticellidae); and Suctoria: Acineta Ehrenberg,1834 (Acinetidae) and Tokophrya Bütschli,1889 (Tokophrydae). The results showed that P. lineata constitute the microenvironment of a ciliate protozoan community that presents complex trophic interactions. O objetivo do presente estudo foi realizar um levantamento dos protozoários ciliados dos táxons Peritrichia e Suctoria, epibiontes de Pomacea lineata (Spix, 1827) (Ampullariidae). Cinqüenta moluscos foram coletados em ambientes de vala de irrigação, em Juiz de Fora, Minas Gerais. As conchas dos moluscos foram raspadas com bisturi e o material extraído analisado in vivo sob o microscópio de luz. Todos os moluscos examinados apresentaram ciliados epibiontes em suas conchas. Registra-se pela primeira vez ciliados epibiontes em P. lineata. Sete gêneros de ciliados: cinco peritríquios e dois suctórios foram identificados e classificados nas subclasses Peritrichia : Carchesium Ehrenberg, 1838 (Vorticellidae), Epistylis Ehrenberg, 1830 (Epistylidae), Opercularia Stein, 1854 (Operculariidae), Vaginicola Lamarck, 1816 (Vaginicolidae) e Vorticella Lìnnaeus, 1767 (Vorticellidae); e Suctoria: Acineta Ehrenberg, 1834 (Acinetidae) e Tokophrya Bütschli, 1889 (Tokophrydae). Os resultados deste estudo demonstraram que P. lineata constitui o microambiente de uma comunidade de protozoários ciliados que exibem interações tróficas complexas

First record of epibionts peritrichids and suctorians (Protozoa, Ciliophora) on Pomacea lineata (Spix, 1827)