Parvicapsula curvatura n. sp. in cultured olive flounder Paralichthys olivaceus and phylogenetic characteristics of the genus Parvicapsula

Parvicapsula curvatura n. sp. (Myxozoa; Bivalvulida) was found in the urinary bladder of olive flounder Paralichthys olivaceus cultured in a fish farm on Jeju Island, ROK. When laterally viewed, the parasite has asymmetrical curved spores that measure 9.6-11.6 µm in length. Furthermore, it has 2 sub...

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Bibliographic Details
Published in:Diseases of aquatic organisms 2018-09, Vol.130 (3), p.199-207
Main Authors: Shin, Sang Phil, Nam Jin, Chang, Chang Sohn, Han, Lee, Jehee
Format: Article
Language:English
Subjects:
Aldehydes
Animals
Aquaculture
Bladder
DNA, Ribosomal
Fish
Fish Diseases
Fish farms
Flounder - microbiology
Host specificity
Morphology
Myxozoa - isolation & purification
Paralichthys olivaceus
Parasites
Phylogenetics
Phylogeny
Spores
Urinary bladder
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Summary:Parvicapsula curvatura n. sp. (Myxozoa; Bivalvulida) was found in the urinary bladder of olive flounder Paralichthys olivaceus cultured in a fish farm on Jeju Island, ROK. When laterally viewed, the parasite has asymmetrical curved spores that measure 9.6-11.6 µm in length. Furthermore, it has 2 subspherical polar capsules at the apex. Based on the phenotypical traits, it is most similar to P. limandae but differs in the shape of polar capsule, locality, and host specificity (family level). BLAST analysis indicated that P. curvatura was closest to P. unicornis and P. petuniae via 18S and 28S rDNA sequences, respectively. The 18S rDNA from P. curvatura was used in molecular phylogenetic analyses of Parvicapsula spp. to examine the congruence of phylogeny with spore morphology, locality, and host specificity. The results demonstrated that the spore morphotype was correlated with the phylogeny of the genus Parvicapsula, and the parasites have speciated into an oblong and semicircular spore type.
ISSN:0177-5103
1616-1580
DOI:10.3354/dao03276