| first record of trichodina heterodentata (ciliophora: trichodinidae) from channel catfish, ictalurus punctatus cultivated in brazil. | this study characterises morphologically trichodina heterodentata duncan, 1977 from channel catfish, ictalurus punctatus (rafinesque, 1818) in the state of santa catarina, brazil. body and gill smears were air-dried at room temperature, impregnated with silver nitrate and/or stained with giemsa. ten characteristics were selected to compare the present material with other morphological characterisations of t. heterodentata. prevalence rate was 100%, mean intensity 89,333.70 (3,125 to 299,100 para ... | 2010 | 20730352 |