title: Ectoparasitic species of the genus Trichodina (Ciliophora: Peritrichida) parasitising British freshwater fish.
abstract: Seven species of the genus Trichodina Ehrenberg, 1838 were identified during a sampling programme of twenty freshwater fish species from approximately sixty sites in Scotland, England and Wales. Species found include: Trichodina acuta Lom, 1961 from Cyprinus carpio L., Carassius auratus L., Oncorhynchus mykiss (Walbaum), Salmo trutta L. and Phoxinus phoxinus L.; Trichodina domerguei Wallengren, 1897 from Gasterosteus aculeatus L.; Trichodina tenuidens Faure-Fremiet, 1944 from Gasterosteus aculeatus; Trichodina pediculus Ehrenberg, 1838 from Gasterosteus aculeatus; Trichodina modesta Lom, 1970 from Abramis brama L.; Trichodina nigra Lom, 1960 from Cyprinus carpio, Salmo trutta and Oncorhynchus mykiss; and Trichodina intermedia Lom, 1960 from Phoxinus. Morphological variation within and between host populations and host specificity of the Trichodina species recovered are described.
authors.affiliation: Institute of Aquaculture, University of Stirling, UK. crichards@cix.compulink.co.uk
authors.forename: W H
authors.initials: WH
authors.lastname: Gaze
authors.forename: R
authors.initials: R
authors.lastname: Wootten
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000145:classification* / Q000302:isolation & purification; D005399:Fishes / Q000469:parasitology*; D005618:Fresh Water; D006113:United Kingdom