An ultrastructural and histopathological study of Henneguya pellucida n. sp. (Myxosporea: Myxobolidae) infecting Piaractus mesopotamicus (Characidae) cultivated in BrazilE.A. Adriano, S. Arana and N.S. CordeiroParasite, 12 3 (2005) 221-227DOI: https://doi.org/10.1051/parasite/2005123221