163,924 species and infraspecific names are in the database, 22,783 images, 63,106 bibliographic items, 484,278 distributional records.

Asterodinium Sournia, 1972

Classification:
Empire Eukaryota
Kingdom Chromista
Subkingdom Harosa (supergroup SAR)
Infrakingdom Halvaria
Phylum Miozoa
Subphylum Myzozoa
Infraphylum Dinozoa
Superclass Dinoflagellata
Class Dinophyceae
Order Gymnodiniales
Family Kareniaceae

Holotype species: Asterodinium gracile Sournia

Original publication and holotype designation: Sournia, A. (1972). Quatre nouveaux Dinoflagell├ęs du plancton marin. Phycologia 11(1): 71-74, 8 figs.
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Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as neuter.

Most recent taxonomic treatment adopted: Benico, G., Takahashi, K., Lum, W.M. & Iwataki, M. (2019). Morphological variation, ultrastructure, pigment composition and phylogeny of the star-shaped dinoflagellate Asterodinium gracile (Kareniaceae, Dinophyceae). Phycologia 58(4): 405-418.

Taxonomic notes
Family Kareniaceae (Benico et al., 2019: 416). - (26 Aug 2019) - Wendy Guiry

Description: Medium-sized (ca. 80 ┬Á;m) star-shaped organism with 5 arms and a cingulum separating the epicone with one apical and 2 lateral arms from the hypocone with 2 diverging antapical arms. Typical dinokaryon is located in the hypocone. Numerous chloroplasts which seem to act as skeleton in the arms. Flagella not known, as only described from fixed material. Cell covering apparently rigid, but not divided into thecal plates. Sexual reproduction and cyst formation not known. Sournia (1986) placed this genus in an separate order Brachydiniales but speculates that it may be only a developmental stage of other dinoflagellates. Marine plankton, so far known only from its author from waters off Madagascar, Indian Ocean.

Information contributed by: M. Elbrächter. The most recent alteration to this page was made on 26 Aug 2019 by M.D. Guiry.

Numbers of names and species: There are 3 species names in the database at present, of which 2 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

References
Benico, G., Takahashi, K., Lum, W.M. & Iwataki, M. (2019). Morphological variation, ultrastructure, pigment composition and phylogeny of the star-shaped dinoflagellate Asterodinium gracile (Kareniaceae, Dinophyceae). Phycologia 58(4): 405-418.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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.

Created: 07 September 2004 by Robert Wilkes

Verified by: 26 August 2019 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=47277

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 26 October 2021.

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