Ichthyophonus irregularis sp. nov. from the yellowtail flounder Limanda ferruginea from the Nova Scotia shelf

Rand, Thomas G., White, Kelly, Cannone, Jamie J., Gutell, Robin R., Murphy, Colleen A. and Ragan, Mark A. (2000) Ichthyophonus irregularis sp. nov. from the yellowtail flounder Limanda ferruginea from the Nova Scotia shelf. Diseases of Aquatic Organisms, 41 1: 31-36. doi:10.3354/dao041031

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Author Rand, Thomas G.
White, Kelly
Cannone, Jamie J.
Gutell, Robin R.
Murphy, Colleen A.
Ragan, Mark A.
Title Ichthyophonus irregularis sp. nov. from the yellowtail flounder Limanda ferruginea from the Nova Scotia shelf
Formatted title
Ichthyophonus irregularis sp. nov. from the yellowtail flounder Limanda ferruginea from the Nova Scotia shelf
Journal name Diseases of Aquatic Organisms   Check publisher's open access policy
ISSN 0177-5103
1616-1580
Publication date 2000-05-01
Year available 2000
Sub-type Article (original research)
DOI 10.3354/dao041031
Open Access Status File (Publisher version)
Volume 41
Issue 1
Start page 31
End page 36
Total pages 6
Place of publication Oldendorf, Germany
Publisher Inter-Research
Language eng
Formatted abstract
A previously described unusual form of the protistan parasite Ichthyophonus, differing in morphological and developmental features from I. hoferi sensu Plehn & Mulsow, was recovered from yellowtail flounder Limanda ferruginea Storer from the Brown¹s Bank area of the Nova Scotia shelf. The nuclear gene encoding the rRNA of the small ribosomal subunit was amplified from this unusual form of Ichthyophonus using the polymerase chain reaction, sequenced and aligned with other eukaryote small subunit (ssu)-rDNAs. Inferred phylogenetic trees clearly show that its ssu-rDNA is distinct from those of 2 isolates of I. hoferi sensu Plehn & Mulsow from different hosts and geographical locations (herring in the North Sea, and yellowtail flounder from the Nova Scotia shelf). We consider the unusual form to be a separate species, I. irregularis. The occurrence of a second, distinct type of Ichthyophonus within a single host species raises the possibility that ichthyophoniasis could be produced by different (although related) pathogens, and in some cases, by concurrent infections of the two.
Keyword Ichthyophonus hoferi
Ichthyophonales
Ichthyophoniasis
Limanda ferruginea
Ssu-rDNA
Phylogeny
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID GM48207
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Institute for Molecular Bioscience - Publications
 
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