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Ceratocorys mariaovidiorum sp. nov. (Gonyaulacales), a new dinoflagellate species previously reported as Protoceratium reticulatum
Salgado, P.; Fraga, S.; Rodriguez, F.; Riobó, P.; Bravo, I. (2018). Ceratocorys mariaovidiorum sp. nov. (Gonyaulacales), a new dinoflagellate species previously reported as Protoceratium reticulatum. J. Phycol. 54(1): 126-137. https://dx.doi.org/10.1111/jpy.12609
In: Journal of Phycology. Blackwell Science: New York. ISSN 0022-3646; e-ISSN 1529-8817
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| Trefwoorden |
Gonyaulacales [WoRMS]; Protoceratium reticulatum (Claparède & Lachmann) Bütschli, 1885 [WoRMS]
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| Author keywords |
Ceratocorys mariaovidiorum; Ddnoflagelate; ITS rDNA; reticulated plates |
| Auteurs | | Top |
- Salgado, P.
- Fraga, S.
- Rodriguez, F.
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| Abstract |
The family Ceratocoryaceae includes the genera Ceratocorys, Protoceratium and Schuettiella, whose phylogenetic relationships are poorly known. Here, the new non-yessotoxin-producing species of the genus Ceratocorys, Ceratocorys mariaovidiorum sp. nov., previously reported as the toxic Protoceratium reticulatum, is described from examinations by light and scanning electron microscopy, molecular phylogeny, and toxin analyses. The species description is made from culture samples of strains CCMP1740 and CCMP404 from USA waters. Ceratocorys mariaovidiorum is globular and has thick and strongly reticulated plates with one pore within each reticule, just like Protoceratium reticulatum, but the key difference between the two species is the presence of five precingular plates in C. mariaovidiorum instead of six as in P. reticulatum. The thecal plate formula is Po, 4’, 0a, 5’’, 6c, ~7s, 5’’’, 0p, 2’’’’. The apical pore plate is oval with a λ-shaped pore. The first apical plate is narrow with a ventral pore on the right anterior side; it contacts the apical pore plate and its contact with the anterior sulcal plate is slight or absent. The fourth precingular plate of other Gonyaulacales is absent. Ceratocorys mariaovidiorum may have small spines on the second antapical plate. A phylogenetic study based on ITS/5.8SrDNA supports the morphological classification of C. mariaovidiorum as a new species of Ceratocorys and in a different clade from P. reticulatum. |
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