Kudoa prunusi n. sp. (Myxozoa: Multivalvulida) from the brain of Pacific bluefin tuna Thunnus orientalis (Temminck & Schlegel, 1844) cultured in Japan

Abstract Kudoa prunusi n. sp. (Myxozoa; Multivalvulida) is described from the brain of Pacific bluefin tuna Thunnus orientalis cultured in Japan. Numerous white cysts, up to 0.5 mm in size, were found on and in the brain. Spores having typically five spore valves and five polar capsules resembled a...

Full description

Saved in:
Bibliographic Details
Published in:Parasitology international 2011-01, Vol.60 (1), p.90-96
Main Authors: Meng, F, Yokoyama, H, Shirakashi, S, Grabner, D, Ogawa, K, Ishimaru, K, Sawada, Y, Murata, O
Format: Article
Language:English
Subjects:
Animals
brain
Brain - parasitology
cherries
DNA, Protozoan - genetics
Fish Diseases - parasitology
Gastroenterology and Hepatology
Infectious Disease
Japan
Kudoa
Marine
Multivalvulida
Myxozoa
Myxozoa - classification
Myxozoa - isolation & purification
New species
nucleotide sequences
Pacific bluefin tuna
parasitology
Phylogeny
Prunus
ribosomal DNA
RNA, Ribosomal, 18S - genetics
RNA, Ribosomal, 28S - genetics
Sequence Analysis, DNA
Sillago ciliata
Species Specificity
spores
Spores, Protozoan - isolation & purification
Thunnus orientalis
Tuna - parasitology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Kudoa prunusi n. sp. (Myxozoa; Multivalvulida) is described from the brain of Pacific bluefin tuna Thunnus orientalis cultured in Japan. Numerous white cysts, up to 0.5 mm in size, were found on and in the brain. Spores having typically five spore valves and five polar capsules resembled a five-petal cherry blossom in apical view and were conical shape with a round bottom in side view. Average spore size was 9.63 (8.5–10.3) μm in width and 7.50 (6.7–8.6) μm in length. The spore dimensions of K. prunusi overlapped with those of Kudoa yasunagai ex Sillago ciliata having five to six spore valves, but they were clearly distinct in spore shape, 18S rDNA and 28S rDNA sequences (0.3% and 1.7% differences, respectively). Phylogenetic analysis of 18S rDNA revealed that K. prunusi grouped with the brain-infecting multivalvulid species, K. yasunagai , K. chaetodoni , K. lethrini and K. neurophila , rather than five-valved Kudoa spp. Combined with morphological, molecular and biological differences, K. prunusi was proven to be a new species.
ISSN:1383-5769
1873-0329
DOI:10.1016/j.parint.2010.11.006