| trichodina magna van as and basson, 1989 (ciliophora: peritrichia) from cultured nile tilapia in the state of santa catarina, brazil. | specimens of trichodina magna van as and bassson, 1989 (ciliophora: peritrichia) from the nile tilapia oreochromis niloticus collected from october 2004 to june 2005 in fish ponds situated in three regions of santa catarina state, brazil are described here. wet smears of skin and gills were prepared in the field, air dried, impregnated with klein's dry silver method and giemsa's solution. from a total of 146 examined fish, 36 were parasitized on the skin, 14 in the gills and 33 on the skin and g ... | 2008 | 18470393 |