WoRMS taxon details
original description
Norris, D. R.; Bomber, J. W.; Balech, E. (1985). Benthic dinoflagellates associated with ciguatera from the Florida Keys. I. Ostreopsis heptagona sp. nov. <em>In: Toxic Dinoflagellates (Ed. by D.M. Anderson, A.W. White & D.G. Baden), pp. 39-44. Elsevier Science Publishing.</em> [details] Available for editors [request]
basis of record
Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. <em>Acta Bot. Croat.</em> 64(1): 129-212. [details]
additional source
Guiry, M.D. & Guiry, G.M. (2024). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
additional source
Tomas, C.R. (Ed.). (1997). Identifying marine phytoplankton. Academic Press: San Diego, CA [etc.] (USA). ISBN 0-12-693018-X. XV, 858 pp., available online at http://www.sciencedirect.com/science/book/9780126930184 [details]
ecology source
Hansen, P. J.; Tillmann, U. (2020). Mixotrophy in Dinoflagellates: Prey Selection, Physiology and Ecological Importance in Dinoflagellates: Classification, Evolution, Physiology and Ecological Significance. <em>Ed: Subba Rao Durvasula. Publisher: Nova Science Publishers, Inc. New York, USA.</em> [details]
ecology source
Mitra, A.; Caron, D. A.; Faure, E.; Flynn, K. J.; Leles, S. G.; Hansen, P. J.; McManus, G. B.; Not, F.; Do Rosario Gomes, H.; Santoferrara, L. F.; Stoecker, D. K.; Tillmann, U. (2023). The Mixoplankton Database (MDB): Diversity of photo‐phago‐trophic plankton in form, function, and distribution across the global ocean. <em>Journal of Eukaryotic Microbiology.</em> 70(4)., available online at https://doi.org/10.1111/jeu.12972 [details]
ecology source
Faust, M. A.; Morton, S. L.; Q, J. P. (1996). Further SEM studies of marine dinoflagellates: the genus Ostreopsis (Dinophyceae). <em>J. Phycol.</em> 32: 1053-1065. [details]
From editor or global species database
LSID urn:lsid:algaebase.org:taxname:49565 [details]From regional or thematic species database
Description Relatively large cells, broadly ovoidal, tapering ventrally in apical viewPlate 1’ peculiar and heptagonal, i.e. having a suture with 5’’, which is not present in other species. Plate 2’ small, about twice the size of Po. Cingulum very narrow (1.5–3.0 μm). Sulcus recessed and hidden, transversally elongated. Plate 2’’’’ long, and broadest ventrally. Theca ornamented with many small protuberances containing a pore (0.30 μm in diameter, Faust et al. 1996). An heptagonal plate 1’ has also been found in cultures of O. ovata (Besada et al. 1982) in an aberrant specimen, and more recently in a strain of O. cf. ovata by Penna et al. (2010). Although these species are much smaller in size than O. heptagona, the heptagonal shape of the 1’ plate is not an unambiguous character to identify this species. [details]
Harmful effect There are no records of toxin production by this species in nature. However, when originally described from Florida (Norris et al. 1985), cultured cells showed limited toxicity based on the mouse bioassay [details]
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