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Molecular characterization of the myoliquefactive fish parasite Kudoa mirabilis (Cnidaria, Kudoidae) from SE Indian Ocean and its phylogenetic relationship with the Kudoa thyrsites species complex
- Source :
- 8:1352, Microorganisms, Microorganisms, Vol 8, Iss 1352, p 1352 (2020), Volume 8, Issue 9
- Publication Year :
- 2020
- Publisher :
- MDPI, 2020.
-
Abstract
- Myxosporean parasites of the genus Kudoa are fish parasites of great economic importance, as some species can affect the fish fillet quality by producing macroscopic cysts or generating post mortem myoliquefaction, commonly referred to as &lsquo<br />soft flesh&rsquo<br />Kudoa mirabilis is a &lsquo<br />inducing species originally described based on morphology in the musculature of Trichiurus lepturus from the Indian Ocean. An integrative morphological and genetic characterization of K. mirabilis from the type host caught off the coast of Tanzania is here provided. The spores were stellate with four unequal polar capsules, showing similarities to Kudoa thyrsites. For comparative and validation purpose, K. mirabilis was compared morphologically and genetically with K. thyrsites reference isolates, including new obtained samples from the type host Thyrsites atun caught in the SE Atlantic Ocean. Morphological analyses of spores revealed key diagnostic characters clearly distinguishing the two Kudoa species. Phylogenetic analyses based on SSU and LSU rRNA genes demonstrated that K. mirabilis is a distinct and valid species, representing a sister group to a K. thyrsites subclade that comprises several isolates from Japan and one single isolate from South Africa. This finding raises questions about the true diversity likely hidden in the K. thyrsites complex.
- Subjects :
- Microbiology (medical)
Species complex
fish parasite
Zoology
sister species
Microbiology
Trichiurus lepturus
type host
030308 mycology & parasitology
molecular characterization
03 medical and health sciences
Genus
Virology
allometric characters
Kudoa thyrsites
lcsh:QH301-705.5
030304 developmental biology
0303 health sciences
myoliquefaction
Phylogenetic tree
biology
Thyrsites atun
fungi
kudoa mirabilis
Kudoa thyrsites complex
biology.organism_classification
‘soft flesh’
lcsh:Biology (General)
Sister group
kudoa thyrsites complex
Kudoa
Kudoa mirabilis
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- 8:1352, Microorganisms, Microorganisms, Vol 8, Iss 1352, p 1352 (2020), Volume 8, Issue 9
- Accession number :
- edsair.doi.dedup.....1d3bd5e98f3705555a84fd820ae84d6c