Trichodinids (Ciliophora : Trichodinidae) from native and exotic Australian freshwater fishes

Dove, Alastair D. M. and O'Donoghue, Peter J. (2005) Trichodinids (Ciliophora : Trichodinidae) from native and exotic Australian freshwater fishes. Acta Protozoologica, 44 1: 51-60.

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Author Dove, Alastair D. M.
O'Donoghue, Peter J.
Title Trichodinids (Ciliophora : Trichodinidae) from native and exotic Australian freshwater fishes
Journal name Acta Protozoologica   Check publisher's open access policy
ISSN 0065-1583
Publication date 2005
Sub-type Article (original research)
Open Access Status File (Publisher version)
Volume 44
Issue 1
Start page 51
End page 60
Total pages 10
Place of publication Warsaw
Publisher Nencki Institute Experimental Biology
Collection year 2005
Language eng
Subject C1
300508 Parasitology
630202 Sown grasses
Abstract There are very few data on trichodinids of freshwater fishes in Australia. 2003 fishes were surveyed across Eastern Australia to investigate the diversity of trichodinids present, to determine which species have been introduced with exotic fishes and to determine the extent to which these species have crossed into native fish Populations. Twenty-one putative trichodinid species were recovered from the 33 fish species examined. Trichodina heterodentata, T. mutabilis and T. reticulata were the exotic species recovered regularly; a single specimen matched a fourth exotic species, T acuta. All four exotic species are redescribed from Australian material. Trichodina heterodentata was recorded from 17 species of fishes, 15 of which were new host records; this species is identified as one of emerging importance in fish parasitology and a list of its known hosts is presented. Two new native species are also described based on silver stained specimens: T cribbi sp. n. from Hypseleotris galii, H. klunzingeri, and Hypseleotris sp. 5; and T. bassonae sp. n. from Selenotoca multifasciata. Trichodina cribbi is characterised by a large circular central inclusion and approximately 28 denticles, which have a blade length slightly greater than the ray length. Trichodina bassonae is characterised by a small, round, central inclusion and approximately 25 denticles, which have straight, non tapering rays that are in line with the leading edge of the denticle blade. It is estimated that the Australian trichodinid fauna may include up to 150 as yet undescribed species and represents a major source of unexplored biodiversity.
Keyword Microbiology
Trichodina Bassonae Sp N.
Trichodina Cribbi Sp N.
Ectoparasites Ciliophora
Reticulata Hirschmann
Host Specificity
Q-Index Code C1

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