Opisthoaulax Calado, 2011

Holotype species: Opisthoaulax vorticella (F.Stein) Calado

Original publication and holotype designation: Calado, A.J. (2011). On the identity of the freshwater dinoflagellate Glenodinium edax, with a discussion on the genera Tyrannodinium and Katodinium, and the description of Opisthoaulax gen. nov. Phycologia 50(6): 641-649.

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Description: Epicone 1.5–2.5 times the length of the hypocone, chloroplasts absent. Cells more or less dorsoventrally compressed. With distinct eyespot in the sulcus. Propagation by formation of 4-8 zoospores in the non-motile stage has been observed in O. vorticella, O. musei and O. fastigata. Cyst, where known, with paracingulum and two axial horns as in Tovellia.

Information contributed by: Moestrup & Calado (2018). The most recent alteration to this page was made on 2021-09-06 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Moestrup, Ø. & Calado, A.J. (2018). Süßwasserflora von Mitteleuropa. Dinophyceae. Vol. 6 pp. [i]-xii, [1]-560, 421 figures. Berlin: Springer Spektrum.

Comments: Although currnetly (October 2018) not examined with molecular methods, there is little doubt that Opisthoaulax is a close relative of Tovellia (Moestrup & Calado 2018: 366).

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=51236

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 September 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024