title: Trichodina colisae (Ciliophora: Trichodinidae): new parasite records for two freshwater fish species farmed in Brazil.
abstract: Family Trichodinidae comprises ciliate protozoa distributed worldwide; they are considered some of the main parasitological agents infecting cultivated fish. However, the trichodinidae parasitizing important fish species cultured in Brazil are unknown, and more taxonomic studies on this group of parasites are required. This research morphologically characterizes Trichodina colisae Asmat & Sultana, (2005) of pacu (Piaractus mesopotamicus) and patinga hybrid (P. mesopotamicus × P. brachypomus) cultivated in the central and southeast regions of the country. Fresh assemblies were made from mucus scraped from the skin, fins and gills, fixed with methanol and, subsequently, impregnated with silver nitrate and stained with Giemsa for assessment under light microscopy. This research reports not only the second occurrence of T. colisae in the world, but also its first occurrence in South America.
authors.affiliation: Laboratório AQUOS - Sanidade de Organismos Aquáticos, Departamento de Aquicultura, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil.
authors.forename: Gabriela Tomas
authors.initials: GT
authors.lastname: Jerônimo
authors.forename: Natália da Costa
authors.initials: Nda C
authors.lastname: Marchiori
authors.forename: Santiago Benites de
authors.initials: SB
authors.lastname: Pádua
authors.forename: José
authors.initials: J
authors.lastname: Dias Neto
authors.forename: Fabiana
authors.initials: F
authors.lastname: Pilarski
authors.forename: Márcia Mayumi
authors.initials: MM
authors.lastname: Ishikawa
authors.forename: Maurício Laterça
authors.initials: ML
authors.lastname: Martins
mesh_terms: D000818:Animals; D001938:Brazil; D060126:Characidae / Q000469:parasitology*; D016798:Ciliophora / Q000502:physiology*; D005618:Fresh Water