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New species and combination in section Oceanica, genus Protoperidinium (Peridiniales, Dinophyceae) from Vietnamese waters
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  • Luom Phan,
  • Maxim Krakhmalnyi,
  • Ha Le,
  • Van Tran,
  • Hue Tran,
  • Ngoc Duyen Huynh,
  • Behrouz Darki,
  • Aleksandr Krakhmalnyi
Luom Phan
Institute of Oceanography, Vietnam Academy of Science and Technology

Corresponding Author:[email protected]

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Maxim Krakhmalnyi
Institute for Evolutionary Ecology of NAS of Ukraine
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Ha Le
Vinh University
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Van Tran
Institute of Oceanography, Viet Nam Academy of Science and Technology
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Hue Tran
Institute of Oceanography, Viet Nam Academy of Science and Technology
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Ngoc Duyen Huynh
Institute of Oceanography, Viet Nam Academy of Science and Technology
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Behrouz Darki
Faculty of Marine Sciences Tarbiat Modares University
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Aleksandr Krakhmalnyi
Institute for Evolutionary Ecology of NAS of Ukraine
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Abstract

A new heterotrophic dinoflagellate, Protoperidinium vietnamicum sp. nov. was described from the coastal waters of Viet Nam. It is characterized by its elongation, pentagonal to pyriform body in ventral or dorsal view, and moderately dorsoventrally compressed. Epitheca is tapering into a robust apical horn and shorter than antapical horns. Cingulum equatorial, slightly descending. Sulcus wide, shallow, and slightly oblique. Plate 1’ is ortho-type, and intercalary 2a and 3a plates are pentagonal. Plate 1a is quadrangular, and its area is approximately triple times smaller than plate 3a. A new combination is proposed, the Protoperidinium curvicorne (Böhm) comb. nov. has distinct morphological features from other members of the section Oceanica. It presents a large cell-sized species with a round, broad body, and strong dorsoventral compression. The epitheca abruptly transitions into a slender apical horn strongly tilted towards the ventral side. Cingulum is narrow, shallow, descending, and strongly inclined relative to the equatorial plane of the cell. The plate 1’ is ortho-type, and 2а and 3а are asymmetrical and pentagonal. Both species are provided with detailed descriptions and are illustrated with line drawings, as well as with light microscopy images and SEM micrographs. In-depth discussion and comparison with similar species are presented.
18 Aug 2023Submitted to Nordic Journal of Botany
18 Aug 2023Submission Checks Completed
18 Aug 2023Assigned to Editor
18 Aug 2023Review(s) Completed, Editorial Evaluation Pending
18 Aug 2023Reviewer(s) Assigned
06 Oct 2023Editorial Decision: Revise Minor
30 Oct 20231st Revision Received
30 Oct 2023Submission Checks Completed
30 Oct 2023Assigned to Editor
30 Oct 2023Review(s) Completed, Editorial Evaluation Pending
30 Oct 2023Reviewer(s) Assigned
08 Nov 2023Editorial Decision: Revise Minor
09 Nov 20232nd Revision Received
09 Nov 2023Submission Checks Completed
09 Nov 2023Assigned to Editor
09 Nov 2023Review(s) Completed, Editorial Evaluation Pending
17 Nov 2023Editorial Decision: Revise Minor
17 Nov 20233rd Revision Received
17 Nov 2023Assigned to Editor
17 Nov 2023Submission Checks Completed
17 Nov 2023Review(s) Completed, Editorial Evaluation Pending
21 Nov 2023Editorial Decision: Accept