A Novel Parasitic, Syndinean Dinoflagellate Euduboscquella triangula Infecting the Tintinnid Helicostomella longa SCIE SCOPUS

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Title
A Novel Parasitic, Syndinean Dinoflagellate Euduboscquella triangula Infecting the Tintinnid Helicostomella longa
Author(s)
Choi, Jung Min; Jung, Jae Ho; Kim, Ki Hong; Coats, D. Wayne; Kim, Young Ok
KIOST Author(s)
Choi, Jung Min(최정민)Kim, Young Ok(김영옥)
Alternative Author(s)
최정민; 김영옥
Publication Year
2021-08-12
Abstract
A tintinnid species, Helicostomella longa, infected by the parasitic dinoflagellate Euduboscquela triangula n. sp. was discovered from the southern coast of Korea in August of 2015 and 2016. Parasite morphology and development were analyzed by observation of live cells and protargol-stained specimens. The parasite was determined to be a new species in the genus Euduboscquella based on morphological and molecular data. A representative sequence of the novel species clustered in Euduboscquela group I. The morphological and developmental features of E. triangula were distinguished from those of its congeners by: (1) numerous shallow and intertwining grooves on an inconspicuous shield; (2) sporocytes initially forming a short chain, but separating after the second or third division regardless of spore type; (3) production of motile mushroom-shaped dinospores, non-motile spherical spores, and non-motile triangular spores. Dinospores were formed by ca. 28% of infections, while both non motile spherical and triangular spores occurred at a frequency of ca. 36%. All spore types showed completely identical 18S rDNA sequences. Parasite prevalence was 15.5 and 8.3% on 17 and 24 August of 2015, respectively, with infection intensity on both dates being 1.3.
ISSN
2296-7745
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41578
DOI
10.3389/fmars.2021.720424
Bibliographic Citation
FRONTIERS IN MARINE SCIENCE, v.8, 2021
Publisher
FRONTIERS MEDIA SA
Subject
N. SP DINOFLAGELLATA; INTRACELLULAR PARASITE; DUBOSCQUELLA-CACHONI; MOLECULAR PHYLOGENY; CILIATE; MORPHOLOGY; DIVERSITY; SEA
Keywords
Euduboscquella; Helicostomella; marine parasite; syndinean dinoflagellate; tintinnid
Type
Article
Language
English
Document Type
Article
Publisher
FRONTIERS MEDIA SA
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