Ecology
provided by NMNH Marine Dinoflagellates
O. lenticularis can be benthic, epiphytic or tycoplanktonic (Steidinger & Tangen 1996), associated with macroalgae, in the plankton, attached to soft coral and between sand grains. Engulfed cells were often observed in this species collected from Belizean waters (Faust et al. 1996).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Habitat and Locality
provided by NMNH Marine Dinoflagellates
Populations of O. lenticularis were originally found in the Gambier and Society Islands and New Caledonia, Pacific Ocean, associated with macroalgae (Fukuyo 1981). Populations can be found from tropical shallow waters to offshore reefs (Steidinger & Tangen 1996). Cells have been observed epiphytic on macroalgae (Dictyota sp. and Acanthophora spicifera) in the Caribbean region (Carlson & Tindall 1985; Ballantine et al. 1988; Morton & Faust 1997) and the SW Indian Ocean (Quod 1994). In the Caribbean, this species has been observed in the plankton (Faust 1995), attached to soft corals (Ballantine et al. 1985; Carslon & Tindall 1985) and between sand grains (Ballantine et al. 1985; Carslon & Tindall 1985; Faust 1995).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Morphology and Structure
provided by NMNH Marine Dinoflagellates
Ostreopsis lenticularis is a photosynthetic species with many golden-brown chloroplasts. A large nucleus is located posteriorly (Fukuyo 1981). There is evidence of mixotrophy in this species: prey organisms are engulfed via the Vo, the proposed feeding apparatus (Faust et al. 1996).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Nomenclatural Types
provided by NMNH Marine Dinoflagellates
Holotype: Ostreopsis lenticularis Fukuyo, 1981: figs. 30-34
Type Locality: South Pacific Ocean: Gambier and Society Islands, and New Caledonia
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Reproduction
provided by NMNH Marine Dinoflagellates
Ostreopsis lenticularis reproduces asexually by binary fission.
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Species Comparisons
provided by NMNH Marine Dinoflagellates
Ostreopsis lenticularis differs from other species in the genus by its lentil-like cell shape, medium size and randomly spaced round pores. The size and location of plates 2''', 3''' and 4''' are also distinguishing features (Faust et al. 1996). This species closely resembles Gambierdiscus toxicus in size, shape and color, but O. lenticularis has a slightly pointed ventral area while G. toxicus has a round and indented one (Fukuyo 1981). O. lenticularis is also similar to O. siamensis in shape and thecal plate configuration (Fukuyo 1981).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Species Overview
provided by NMNH Marine Dinoflagellates
Ostreopsis lenticularis is an armoured, marine, benthic dinoflagellate species. It was discovered as an epiphyte on macroalgae in the Gambier and Society Islands of French Polynesia, and New Caledonia, Pacific Ocean.
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Taxonomic Description
provided by NMNH Marine Dinoflagellates
Species in this genus are anterio-posteriorly compressed and are observed in apical or antapical view. The epitheca and hypotheca are not noticeably different in size. Unique features of this genus are on the cingulum. In ventral view the cingulum reveals two prominent structures: a ventral plate (Vp) with a ventral pore (Vo), and an adjacent curved rigid plate (Rp). The distinguishing feature at the species level is the shape of the first apical plate (1') on the epitheca (Fig. 1)(Faust et al. 1996). Cells of Ostreopsis lenticularis are lenticulate to broadly oval (Figs. 1, 2). The cell surface is smooth and covered with randomly spaced pores (0.4 um diameter) with smooth raised edges (Figs. 1-4); the pores are large and round (Fig. 3). Cells have a dorso-ventral diameter of 65-75 um and a transdiameter of 57-63 um (Faust et al. 1996; Fukuyo 1981).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Thecal Plate Description
provided by NMNH Marine Dinoflagellates
The plate formula of Ostreopsis lenticularis is: Po, 3', 7'', 6c, 6s?, Vp, Rp, 5''', 1p, 2''''(Fig. 6). The epitheca contains 11 plates. The narrow apical pore plate (Po) is 16 um long (average) with a slit-like apical pore, and is situated adjacent to apical plate 2' (Figs. 1, 5). The 1' plate is large, irregularly pentagonal-shaped, and situated in the center (Figs. 1, 5) (Faust et al. 1996). The hypotheca is composed of eight plates.
Plate 1p, situated centrally, is a narrow, asymmetric, pentagonal plate (Figs. 2, 5).
Plate 1'''' contacts the sulcal region (Fig. 6)(Faust et al. 1996). The lipped cingulum is narrow and shallow with a smooth edge (Figs. 1, 2, 4). Within the cingulum is the Vo located on the Vp, and adjacent to a Rp (Figs. 4,5). The shape of the Vp varies from oblong to circular. The sulcus is small and hidden (Faust et al. 1996).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Toxicity
provided by NMNH Marine Dinoflagellates
This is a known toxic species; it produces ostreotoxin (OTX), a water-soluble toxin (Tindall et al. 1990), and an unnamed toxin (Ballantine et al. 1988).
- bibliographic citation
- Faust, Maria A. and Rose A. Gulledge. Identifying Harmful Marine Dinoflagellates. Smithsonian Contributions from the United States National Herbarium, volume 42: 1-144 (including 48 plates, 1 figure and 1 table).
Ostreopsis lenticularis
provided by wikipedia EN
Ostreopsis lenticularis is a species of dinoflagellate of the family Ostreopsidaceae[1] described in 1981 by Yasuwo Fukuyo.[2]
Distribution
This species is endemic to Tahiti.
References
- Fukuyo Y. 1981. Taxonomical study on benthic dinoflagellates collected in coral reefs. Bull. Jap. Soc. Sci. Fish. 47: 967-978
- Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. Acta Bot. Croat. 64(1): 129-212
- Streftaris, N.; Zenetos, A.; Papathanassiou, E. (2005). Globalisation in marine ecosystems: the story of non-indigenous marine species across European seas. Oceanogry and Marine Biology: an Annual Review. 43: 419-453
- Steidinger, K. A., M. A. Faust, and D. U. Hernández-Becerril. 2009. Dinoflagellates (Dinoflagellata) of the Gulf of Mexico, Pp. 131–154 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, college
- Chang, F.H.; Charleston, W.A.G.; McKenna, P.B.; Clowes, C.D.; Wilson, G.J.; Broady, P.A. (2012). Phylum Myzozoa: dinoflagellates, perkinsids, ellobiopsids, sporozoans, in: Gordon, D.P. (Ed.) (2012). New Zealand inventory of biodiversity: 3. Kingdoms Bacteria, Protozoa, Chromista, Plantae, Fungi. pp. 175–216.
- Tindall D.R., Miller D.M. & Tindall P.M. 1990. Toxicity of Ostreopsis lenticularis from the British and United States Virgin Islands. In: Toxic Marine Phytoplankton (Ed. by E. Granéli, B. Sundström, L. Edler, D.M. Anderson), pp. 424 – 429. Elsevier, New York
- Meunier F.A., Mercado J.A., Molgo J., Tosteson T.R. & Gotta G.E. 1997. Selective depolarization of the muscle membrane in frog nerve-muscle preparations by a chromatographically purified extract of the dinoflagellate Ostreopsis lenticularis. Brit. J. Pharmacol. 121: 1224-1230
- Lenoir S., Ten-Hage L., Turquet J., Quod J.-P., Bernard C. & Hennion M.-C. 2004. First evidence of palytoxin analogues from an Ostreopsis mascarenensis (Dinophyceae) benthic bloom in Southwestern Indian Ocean. J. Phycol. 40: 1042-1051
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Ostreopsis lenticularis: Brief Summary
provided by wikipedia EN
Ostreopsis lenticularis is a species of dinoflagellate of the family Ostreopsidaceae described in 1981 by Yasuwo Fukuyo.
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