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Taxonomic Assessment of Three North American Trichodinids by Reevaluating the Taxon Validity of Trichodina heterodentata Duncan, 1977 (Peritrichia)

Publication date: 24.09.2019

Acta Protozoologica, 2019, Volume 58, Issue 3, pp. 125 - 139

https://doi.org/10.4467/16890027AP.19.013.11914

Authors

,
Gerhard P. de Jager
Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa
All publications →
Linda Basson
Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa
All publications →

Titles

Taxonomic Assessment of Three North American Trichodinids by Reevaluating the Taxon Validity of Trichodina heterodentata Duncan, 1977 (Peritrichia)

Abstract

Trichodina heterodentata was first described from fish breeding farms in the Philippines by Bryan Duncan in 1977 as ectoparasites of imported cichlids, more specifically the southern African Oreochromis mossambicus (Peters, 1852) from the Limpopo River System. This trichodinid has subsequently been described from almost every continent, bar North America. Being a cosmopolitan species, with a preference for cichlid hosts, it has unambiguous morphological features, but with distinct variances between and within populations. After reviewing previous descriptions of North American trichodinids, analysing the morphological data (both generally published information along with the original type material from the Smithsonian Museum, Washington, U.S.A.) and investigating the distribution patterns of the southern African introduced O. mossambicus throughout the North American water systems, three of the four studied trichodinids (T. hypsilepis Wellborn, 1967, T. salmincola Wellborn, 1967 and T. vallata Wellborn, 1967) are proposed to represent the same species as T. heterodentata. According to nomenclature rules T. hypsilepis henceforth represents the valid taxon (synonyms: T. salmincola, T. vallata and T. heterodentata). This not only questions the validity of several trichodinid species, but also indicates the probability of an African alien introduction into North America.

References

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Information

Information: Acta Protozoologica, 2019, Volume 58, Issue 3, pp. 125 - 139

Article type: Original article

Authors

Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa

Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa

Published at: 24.09.2019

Article status: Open

Licence: CC BY-NC-ND  licence icon

Percentage share of authors:

Gerhard P. de Jager (Author) - 50%
Linda Basson (Author) - 50%

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