Plagiodinium ballux sp. nov. (Dinophyceae), a deep (36 m) sand dwelling dinoflagellate from subtropical Japan
| Autor: | Mahmutjan Dawut, Ryuta Terada, Takeo Horiguchi, Norico Yamada |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
biology
Phylogenetic tree Dinoflagellate Plant Science Aquatic Science biology.organism_classification phylogeny small subunit rDNA Agricultural and Biological Sciences (miscellaneous) ultrastructure Epitheca Type species taxonomy Benthic zone Phylogenetics Botany morphology Taxonomy (biology) Benthic large subunit rDNA Dinophyceae |
| Zdroj: | Phycological research. 67(1):12-20 |
| ISSN: | 1322-0829 |
| Popis: | A new species of marine sand-dwelling dinoflagellate, Plagiodinium ballux N. Yamada, Dawut, R. Terada & T. Horiguchi is described from a deep (36 m) seafloor off Takeshima Island, Kagoshima Prefecture, Japan in the subtropical region of the northwest Pacific. The species is thecate and superficially resembles species of Prorocentrum, but possesses an extremely small epitheca. The cell varies from ovoid to a rounded square, and is small (15.0-22.5 mu m in length) and laterally compressed. The thecal plates are smooth and the thecal plate arrangement (Po, 1 ', 0a, 5 '', 5C, 2S, 5"', 0p, 1 '''') is similar to that of Plagiodinium belizeanum, the type species of the genus. Molecular phylogenetic analyses based on SSU rDNA and partial LSU rDNA reveal that the dinoflagellate is closely related to P. belizeanum, but it can be clearly distinguished by its size and cell shape. This suite of morphological and molecular differences leads to the conclusion that this deep benthic dinoflagellate represents a new species of the genus Plagiodinium. |
| Databáze: | OpenAIRE |
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