Kudoa tanakai n. sp. (Myxozoa: Myxosporea: Multivalvulida), a new kudoid species with spheroid myxospores from the scalpel sawtail (Actinopterygii: Prionurus scalparum) from western Japan.
Journal
Systematic parasitology
ISSN: 1573-5192
Titre abrégé: Syst Parasitol
Pays: Netherlands
ID NLM: 8111384
Informations de publication
Date de publication:
09 Jan 2024
09 Jan 2024
Historique:
received:
27
08
2023
accepted:
16
11
2023
medline:
9
1
2024
pubmed:
9
1
2024
entrez:
9
1
2024
Statut:
epublish
Résumé
We describe a new kudoid species, Kudoa tanakai n. sp., in the scalpel sawfish, Prionurus scalprum (Actinopterygii: Acanthuriformes: Acanthuridae), from the natural water around western Japan. The plasmodia were filamentous, localized in pseudocysts in the myofibers of the trunk muscles. The occurrence of plasmodia in the trunk muscle showed no site preference. Its myxospores were spheroid, measuring 6.6-7.6 (7.0) µm by 5.8-6.9 (6.3) µm in apical view (width) and 5.7-6.6 (6.2) in length (n = 30), with four shell valves and a corresponding number of spheroid polar capsules. Shell valves lacked apical protrusions, but scanning electron microscopy revealed that one of the four shell valves had two semi-lunar flaps at its apical terminus. Nucleotide sequencing of the small and large subunit ribosomal RNA genes of the present isolate showed phylogenetic affinities to kudoid species characterized by spheroid myxospores, such as K. musculoliquefaciens, K. hemiscylli, and K. carcharhini, but was molecularly and morphometrically distinct from these and other kudoid species. For direct comparison, Kudoa hemiscylli was collected from the Pacific spadenose shark, Scoliodon macrorhynchos (Elasmobranchii: Carcharhiniformes: Carcharhinidae), in the South China Sea off Guangdong Province, China, and the myxospore surface of the species was observed using scanning electron microscopy. Our study describes the new host and distribution record of this kudoid species originally described from a variety of elasmobranchs in the Australian Coral Sea.
Identifiants
pubmed: 38193985
doi: 10.1007/s11230-023-10137-w
pii: 10.1007/s11230-023-10137-w
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
13Subventions
Organisme : Faculty of Agricultural Science, Guangdong Ocean University
ID : R17022
Organisme : Japan Society for the Promotion of Science
ID : Bridge Fellowship Program for JYZ
Organisme : Yanmar Environmental Sustainability Support Association
ID : KI0222007
Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Nature B.V.
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