An unusual infection of Henneguya sp. (Myxozoa, Myxosporea, Myxobolidae) in the gills of Hoplosternum littorale Hancock, 1928 (Osteichthyes, Callichthyidae) from Middle Paraná River, Santa Fe, Argentina

EIRAS, J.C.; CHEMES, S.B.; CASABIANCA, R.; TAKEMOTO, R.; ROSSI, L. M.; PAVANELLI, C.

Bull.Eur.Ass. Fish. Pathol.

European Association Of Fish Pathologists

Año: 2008 vol. 28 p. 22 - 26

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:PT; mso-fareast-language:PT;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> It is described the infection of Henneguya sp. on the gills of one specimen of Hoplosternum littorale Hancock, 1928 (Osteichthyes, Callichthyidae) from Middle Paraná River, Argentina. The parasites form large intralamellar plasmodia covering completely the gills of the host forming a corn-cob like structure. The gills are spongiotic and hyperplasic and their breeding capacity is almost completely impaired. The survival of the host is likely to be assured by his ability to breath air through intestinal epithelia. It is proposed to name this clinical symptom as “Corn-cob gill disease”.