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Kudoa alliaria in flesh of Argentinian hoki Macruronus magellanicus (Gadiformes; Merlucciidae)

2006; Inter-Research; Volume: 69; Linguagem: Inglês

10.3354/dao069259

1616-1580

Christopher M. Whipps, BK Diggles,

Marine Ecology and Invasive Species

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 69:259-263 (2006) - doi:10.3354/dao069259 Kudoa alliaria in flesh of Argentinian hoki Macruronus magellanicus (Gadiformes; Merlucciidae) Christopher M. Whipps1,*, Benjamin K. Diggles2 1Center for Fish Disease Research, Department of Microbiology, 220 Nash Hall, Oregon State University, Corvallis, Oregon 97331-3404, USA 2DigsFish Services Pty Ltd., 32 Bowsprit Cres, Banksia Beach, Queensland 4507, Australia *Email: whippsc@onid.orst.edu ABSTRACT: Myxozoans of the genus Kudoa are widespread parasites of marine fishes and primarily infect the body musculature of their hosts. Although Kudoa species are not usually associated with host mortality, some do form macroscopic cysts in the tissue and some are associated with post mortem tissue degradation. This is of concern to commercial fisheries as fillets may be unmarketable due to these infections. Because different species of Kudoa have different effects on their hosts, it is important to correctly identify species with epidemiological relevance, distinguishing those that are benign from those that are associated with these detrimental effects. Using morphological and molecular analyses, we identified K. alliaria infecting Argentinian hoki Macruronus magellanicus. Comparisons of the small subunit ribosomal DNA sequence revealed that K. alliaria is genetically very similar to K. rosenbuschi. Furthermore, there is significant overlap in myxospore dimensions between descriptions of these 2 Kudoa species as well as those of other Patagonian fishes. Thus, without careful examination of the myxospore dimensions, it may be difficult to identify these species on a routine basis. It is critical to accurately identify K. alliaria as, unlike K. rosenbuschi, it is not associated with tissue degradation. Ambiguities in some species descriptions highlight the need for thorough morphological analyses accompanied by molecular comparisons to clarify the species boundaries between Kudoa parasites of Patagonian fishes. KEY WORDS: Kudoa alliaria · Kudoa rosenbuschi · Myxospore morphology · Patagonia · Argentina · Small subunit ribosomal DNA Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 69, No. 2-3. Online publication date: April 06, 2006 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2006 Inter-Research.