Observations on Tripartiella bursiformis, Trichodina nigra and a Pathogenic Trichodinid, Trichodina fultoni

Abstract

A series of epizootics caused by Trichodina fultoni is reported. Fish kept in running water at 12-�c showed severe signs of trichodiniasis. At 12-�C T. fultoni lacked strict host specificity, but demonstrated some preference.A redescription of Tripartiella burstformis, using the silver impregnated techniques, is given. This ciliate is reported from Acantharchus pomotis. Trichodina nigra is reported from the same host