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last update: 19 December 2023

Obertegger U., F. Camin, G. Guella & G. Flaim (2011) Adaptation of a psychophilic freshwater dinoflagellate to ultraviolet radiation. – Journal of Phycology 47(4): 811-820.

Obst B. & R. Hardeland (1997) A temperature step from 20 to 15 ºC stimulates hemo- and glutathione peroxidases, but not haloperoxidase in Gonyaulax polyedra. - In: Biological Rhythms and Antioxidative Protection (R. Hardeland, ed.), Cuvillier, Göttingen, pp. 59-61.
Obst B. & R. Hardeland (1997) Effects of oxidative stress on peroxidases of the dino-flagellate Gonyaulax polyedra. - In: Biological Rhythms and Antioxidative Protection (R. Hardeland, ed.), Cuvillier, Göttingen, pp. 45-53.
Obst B. & R. Hardeland (1997) In the dinoflagellate Gonyaulax polyedra, hemo-, halo- and glutathione peroxidases are not induced by melatonin. - In: Biological Rhythms and Antioxidative Protection (R. Hardeland, ed.), Cuvillier, Göttingen, pp. 62-64.
Obst B. & R. Hardeland (1997) Peroxidases of Gonyaulax polyedra. - In: Biological Rhythms and Antioxidative Protection (R. Hardeland, ed.), Cuvillier, Göttingen, pp. 11-18.
Obst B. & R. Hardeland (1997) The diurnal time patterns of Gonyaulax hemo-, GSH- and haloperoxidase activities. - In: Biological Rhythms and Antioxidative Protection (R. Hardeland, ed.), Cuvillier, Göttingen, pp. 28-33.

Oda M. (1935) Gymnodinium mikimotoi  Miyake et Kominami n.sp. (MS) no akashio to ryosando no kokwa. - Zool. Mag. 47: 35-48.   (in Japanese)

Ochoa N. & M. Baylón (2005) Dinofurcula cf. ventralis en la costa central de Perú y primeros registros de dos especies de Protoperidinium. – Rev. peru. biol. 12(3): 377-382.
Ochoa N. & O. Gomez (1997) Dinoflagelados del mar peruano como indicadores de masas de aguas durante los anos 1982 a 1985. – Bol. Inst. Mar. Perú 17: 1-57.

O'Farrell I. (1994) Comparative analysis of the phytoplankton of fifteen lowland fluvial systems of the River Plate Basin (Argentina). - Hydrobiologia 289: 109-117.

Ogata T., T. Ishimura & M. Kodama (1987) Effect of water temperature and light intensity on growth rate and toxicity change in Protogonyaulax tamarensis. – Marine Biology 95: 217-220.
Ogata T., P. Pholpunthin, Y. Fukuyo & M. Kodama (1990) Occurence of Alexandrium cohorticula in Japanese coastal waters. – Journal Appl. Phycol. 2: 351-356.

Oh S.J., Y. Matsuyama, S. Nagai, S. Itakura, Y.H. Yoon & H.-S. Yang (2009) Comparative study on the PSP component and toxicity produced by Alexandrium tamiyavanichii (Dinophyceae) strains occurring in Japanese coastal water. - Harmful Algae 8(2): 362-368.

Ohtsuka S., K. Nagasawa & K. Gejima (2000) Review of parasites of marine zooplankton. - Bull. Plankton Soc. Japan 47(1): 1-16. (in Japanese)

Ok J.H., H.J. Jeong, A.S. Lim, J.H. You, H.C. Kang, S.J. Kim & S.Y. Lee (2019) Effects of light and temperature on the growth of Takayama helix (Dinophyceae): mixotrophy as a survival strategy against photoinhibition. - Journal of Phycology 55(5): 1181-1195.

Ok J.H., H.J. Jeong, S.Y. Lee, S.A. Park & J.H. Noh (2021) Shimiella gen. nov. and Shimiella gracilenta sp. nov. (Dinophyceae, Kareniaceae), a kleptoplastidic dinoflagellate from Korean waters and its survival under starvation. - Journal of Phycology 57(1): 70-91.

Okaichi T. (1967) Red tides found in and around the Seto Inland Sea in 1965. – Tech. Bull. Fac. Agricult. Kagawa Univ. 15: 181-185.

Okamoto N. & P.J. Keeling (2014) A comparative overview of the flagellar apparatus of dinoflagellate, perkinsids and colpodellids. - Microorganisms 2: 73-91.
Okamoto N., A. Horák & P.J. Keeling (2012) Description of two species of early branching dinoflagellates, Psammosa pacifica n. g., n. sp. and P. atlantica n. sp. - PLoS ONE 7(6): e34900.

Okamoto N., P.J. Keeling, B.S. Leander & V. Tail (2022) Microbial communities in sandy beaches from the three domains of life differ by microhabitat and intertidal location. - Molecular Ecology 31: 3210-3227.
Okamoto O.K. & W.J. Hastings (2003) Novel dinoflagellate clock-related genes identified through microarray analysis. - Journal of Phycology 39: 519-526.

Okolodkov Y.B. (1993a) Dinoflagellates from the Norwegian, Greenland, Barents seas and the Faroe-Shetland Islands area collected in the cruise of the R/V Oceania in June-July 1991. Polish Polar Research 14(1): 9-23.
Okolodkov Y.B. (1993b) Armoured dinoflagellates from the Norwegian, Greenland and Barents seas collected on the cruise of the RV Oceania in August 1992. - Polish Polar Research 14(4): 321-330.
Okolodkov Y.B. (1996a) Biogeography of Arctic-boreal and bipolar dinoflagellates. - Botanical Journal, Russian Academy of Sciences 81(9): 18-30.
Okolodkov Y.B. (1996b) Net phytoplankton from the Barents Sea and Svalbard waters (collected on the cruise of the Research Vessel <<GEOLOG FERSMAN>>, in July-September 1992), with emphasis on the Ceratium species as indicators of the Atlantic waters. - Botanical Journal, Russian Academy of Sciences 81(10): 1-8.
Okolodkov Y.B. (1997) A new combination and new species of Gymnodinium, Gyrodinium and Protoperidinium (Dinophyceae) from the Arctic and N.E. Atlantic. – Botanical Journal, Russian Academy of Science 82(5): 96-105.
Okolodkov Y.B. (1998a) A check-list of dinoflagellates recorded from the Russian Arctic Seas. - Sarsia 83(4): 267-292.
Okolodkov Y.B. (1998b) Unarmoured dinoflagellates collected on the cruises of the RV "Oceania" to the European Arctic, in June-August 1992 and 1993. - Polish Polar Research, 19(3-4): 211-218.
Okolodkov Y.B. (1999a) Protoperidsinium falk-petersenii sp. nov. (Dinophyceae, Peridiniales) from the Barents Sea. - Botanical Journal, Russian Academy of Science 84(3): 116-119.
Okolodkov Y.B. (1999b) An ice-bound planktonic dinoflagellate Peridiniella catenata (Levander) Balech: Morphology, ecology and distribution. – Botanica Marina 42: 333-341.
Okolodkov Y.B. (1999c) Potentially harmful and toxic dinoflagellates (Dinophyceae) in the Eurasian Arctic seas. - Botanical Journal, Russian Academy of Science 84(11): 1-16. [in Russian]
Okolodkov Y.B. (1999d) Differentiation of phototrophic and heterotrophic dinoflagellates (Dinophyceae) by epifluorescence microscopy in the northern Greenland Sea. - Botanical Journal, Russian Academy of Science 84(4): 53-61.
Okolodkov Y.B. (1999e) Species range types of recent marine dinoflagellates recorded from the Arctic. - Grana 38: 162-169.
Okolodkov Y.B. (2003) Further observations on a hypothecal pore in the genus Protoperidinium Bergh (Dinoflagellata). - Hidrobiológica 13(4): 263-269.
Okolodkov Y.B. (2005a) The global distributional patterns of toxic, bloom dinoflagellates recorded from the Eurasian Arctic. - Harmful Algae 4(2): 351-369.
Okolodkov Y.B. (2005b) Protoperidinium Bergh (Dinoflagellata) in the southeastern Mexican Pacific Ocean: Part I. - Botanica Marina 48(4): 284-296.
Okolodkov Y.B. (2008) Protoperidinium Bergh (Dinophyceae) of the National Park Sistema Arrecifal Veracruzano, Gulf of Mexico, with a key for identification. - Acta Botanica Mexicana 84: 93-149.
Okolodkov Y.B. (2010) Ceratium Schrank (Dinophyceae) of the National Park Sistema Arrecifal Veracruzano, Gulf of Mexico, with a key for identification. - Acta Botanica Mexicana 93: 41-101.
Okolodkov Y.B. (2014) Dinophysiales (Dinophyceae) of the national park Sistema Arrecifal Veracruzano, Gulf of Mexico, with a key for identification. - Acta Botanica Mexicana 106: 9-71. 
Okolodkov Y.B. & J.D.Dodge (1995) Redescription of the planktonic dinoflagellate Peridiniella danica (Paulsen) comb. nov. and its distribution in the N.E.Atlantic. -  European Journal of Phycology 30(4): 299-305.
Okolodkov Y.B. & J.D. Dodge (1996) Biodiversity and biogeography of planktonic dinoflagellates in the Arctic Ocean. - J. Exp. Mar. Biol. Ecol. 202(1): 19-27.
Okolodkov Y.B. & J.D. Dodge (1997) Morphology of some rare and unusual dinoflagellates from the north-eastern Atlantic. - Nova Hedwigia 54(3-4): 353-365.
Okolodkov Y.B. & I. Gárate-Lizárraga (2006) An annotated check-list of dinoflagellates (Dinophyceae) from the Mexican Pacific. – Acta Botanica Mexicana 74: 1-154.
Okolodkov Y.B., G. Campos-Bautista, I. Gárate-Lizárraga, J.A.G. González-González, M. Hoppenrath & V. Arenas (2007) Seasonal changes of benthic and epiphytic dinoflagellates in the Veracruz reef zone, Gulf of Mexico. - Aquatic Microbial Ecology 47(3): 223-237.
Okolodkov Y.B., F.D.C. Merino-Virgilio, J.A. Aké-Castillo, A.C. Aguilar-Trujillo, S. Espinosa-Matías & J.A. Herrera-Silveira (2014) Seasonal changes in epiphytic dinoflagellate assemblages near the northern coast of the Yucatan Peninsula, Gulf of Mexico. - Acta Botanica Mexicana 107: 121-151.
Okolodkov Y.B., G. Campos-Bautista & I. Gárate-Lizárraga (2016) Circadian rhythm of a red-tide dinoflagellate Peridinium quadridentatum in the port of Veracruz, Gulf of Mexico, its thecal morphology, nomenclature and geographical distribution. - Marine Pollution Bulletin 108: 289-296. 
Okolodkov Y.B., L.M.. Durán-riveroll, C.J. Band-Schmidt, I. Leyva-Valencia, I. Gárate-Lizárraga & A. Cembella (2022) A review on marine benthic dinoflagellates in Mexico. - Hydrobiológica 32(3): 183-210.

Oldach D.W., C.F. Delwiche, K.S. Jakobsen, T. Tengs, E.G. Brown, J.W. Kempton, E.F. Schaefer, H.A. Bowers, H.B.Jr. Glasgow, J.M. Burkholder, K.A. Steidinger & P.A. Rublee (2000) Heteroduplex mobility assay-guided sequence discovery: Elucidation of the small subunit (18S) rDNA sequences of Pfiesteria piscicida and related dinoflagellates from complex algal culture and environmental sample DNA pools. - Proceedings of the National Academy of Sciences of the United States of America 97(8): 4303-4308.

Oliveira L., N.J. Antia & T. Bisalputra (1978) Culture studies on the effects from fluoride pollution on the growth of marine Phytoplankters. - Journal of  the Fisheries Research Board, Canada 35: 1500-1504.
Oliveira L. & H. Huynh (1989) Ultrastructure and cytochemistry of the marine dinoflagellate Amphidinium carterae grown on three sources of nitrogen. - Journal of Submicroscopical Cytolology and Patholology 21: 641-651.

Olli K. (2004) Temporary cyst formation of Heterocapse triquetra (Dinophyceae) in natural populations. - Marine Biology 145: 1-8.
Olli K. & D.A. Anderson (2002) High encystment success of the dinoflagellate Scrippsiella cf. lachrymosa in culture experiments. - Journal of Phycology 38(1): 145-156.

Olrik K. (1992) Ecology of Peridinium willei and P. volzii (Dinophyceae) in Danish lakes. -  Nordic Journal of Botany 12(5): 557-568.

Olson N.D., T.D. Ainsworth, R.D. Gates & M. Takabayashi (2009) Diazotrophic bacteria associated with Hawaiian Montipora corals: Diversity and abundance in correlation with symbiotic dinoflagellates. - Journal of Experimental Marine Biology and Ecology 371(2): 140-146.

Onda D.F.L., G. Benico, A.F. Sulit, P.L. Gaite, R.V. Azanza & A.O. Lluisma (2013) Morphological and molecular characterization of some HAB.forming dinoflagellates from Philippine waters. - Philippine Science Letterns 6(1): 97-106.

Ono H., S.-A. Yoshimatu & S. Toriumi (1999) A record from benthic dinoflagellates from Japan. - Japanese Journal of Phycology (Sôrui) 47: 11-21.   [in Japanese]

Onuma R. & T. Horiguchi (2013) Morphological transition in kleptochloroplsts after ingestion in the dinoflagellates Amphidinium poecilochroum and Gymnodinium aeruginosum (Dinophyceae). - Protist 164(5): 622-642.
Onuma R. & T. Horiguchi (2015) Kleptochloroplast enlargement, karyoklepty and the distribution of the cryptomonad nucleus in Nusuttodinium (= Gymnodinium) aeruginosum (Dinophyceae). - Protist 166(2): 177-195.
Onuma R., K. Watanabe & T. Horiguchi (2015) Pellucidodinium psammophilum gen. & sp. nov. and Nusuttodinium desymbiontum sp. nov. (Dinophyceae), two novel heterotrophs closely related to kleptochloroplastidic dinoflagellates. - Phycologia 54(2): 192-209.

Öpik H. & K.J. Flynn (1989) The digestive process of the dinoflagellate, Oxyrrhis marina Dujardin, feeding on the chlorophyte, Dunaliella primolecta Butcher: a combined study of ultrastructure and free amino acids. - New Phytologist 113: 143-151.

Orellana-Cepeda E., E. Martinez-Romero, L. Muñoz-Cabrera, P. López-Ramírez, E. Cabrera-Mancilla & C. Ramírez-Camarena (1998) Toxicity associated with blooms of Pyrodinium bahamnese var. compressa in southwestern Mexico. - In: B. Reguera, J. Blanco, M.L. Fernández & T. Wyatt (Eds) Harmful Algae. – Xunta de Galicia and Intergovernmental Oceanographic Commission of UNESCO, Santiago de Compostela, pp. 60. 

Orlova T.Y., T.V. Morozova (2003) To the morphology of cysts and vegetative cells of Scrippsiella crystalina (Dinophyta) from the Far Eastern seas of Russia. - Algologiya 13(4): 411-416. (In Russian)
Orlova T.Y., T.V. Morozova, K.E. Gribble, D.M. Kulis & D.M. Anderson (2004) Dinoflagellate cysts in recent marine sediments from the east coast of Russia. - Botanica Marina 47: 184-201.
Orlova T.Y., M.S. Selina, E.L. Lilly, D.M. Kulis & D.M. Anderson (2007) Morphogenetic and toxin composition variability of Alexandrium tamarense (Dinophyceae) from the east coast of Russia. - Phycologia 46(5): 534-548.
Orlova T.Y., M.S. Selina & O.G. Shevchenko (2003) The morphology of cysts and motile cells of Gyrodinium instriatum (Dinophyta), a species new to the seas of Russia. - Russian Journal of Marine Biology 29(2): 120-122.

Örnólfsdóttir E.B., J.L. Pinckney & P.A. Tester (2003) Quantification of the relative abundance of the toxic dinoflagellate, Karenia brevis (Dinophyta), using unique photopigments. - Journal of Phycology 39(2): 449-457.

Orr R.J.S., S.A. Murray, A. Stüken, L. Rhodes & K.S. Jakobsen (2012) When naked became armored: an eight-gene phylogeny reveals monophyletic origin of theca in dinoflagellates. - PLoS ONE 7(11): e50004.

Oshima Y., S. Blackburn & G.M. Hallegraeff (1993) Comparative study on paralytic shellfish toxin profiles of the dinoflagellate Gymnodinium catenatum from three different countries. – Marine Biology 116: 471-476.
Oshima Y., C.J. Bolch & G.M. Hallegraeff (1992) Toxin composition of resting cysts of Alexandrium tamarense (Dinophyceae). – Toxicon 30(12): 1539-1544. 
Oshima Y., T. Hayakawa, M. Hashimoto, Y. Kotaki & T. Yasumoto (1982) Classification of Protogonyaulax tamarensis from northern Japan into three strains by toxin comosition. – Bull. Japan. Soc. Sci. Fish 48: 851-854.
Oshima Y., H. Itakura, K.-C. Lee, T. Yasumoto, S. Blackburn & G.M. Hallegraeff (1993) Toxin production by the dinoflagellate Gymnodinium catenatum. - In: Toxic phytoplankton blooms in the Sea. (T.J. Smayda & Y. Shimizu Eds) : Elsevier Sci. Publ.  pp.907-912.

Osma N., M. Aristizabal, I. Fernández-Urruzola, T.T. Packard & M. Gómez (2016) Influence of starvation on respiratory metabolism and pyridine nucleotide levels in the marine dinoflagellate Oxyrrhis marina. - Protist 167(2): 136-147.

Osorio Tafall B.F. (1942) Notas sobre algunas Dinoflagelados plancónicos marinos de México, con descriptión de nuevas especies. – Anales de la Escuela nacional de Ciencias Biologicas 2(4): 435-447, pls. 34-36.
Osorio Tafall B.F. (1942) Estudios sobre el plancton de Mexico. 1. El genero Lophodinium Lemm. (Dinophyceae Peridiniales). - Ciencia (Mexico) 3(3 4): 114-119.
Osorio Tafall B.F. (1946) Nuevosdatos sobre la distribucion del dinoflagelado Oxyrrhis marina Duj. – Revista de la Sociedad Mexicana de Historia Natural 7(1-4): 41-48.

Ostenfeld C.H. (1902) Phytoplankton fra det Kaspiske Hav. (Phytoplankton from the Caspian Sea). - Vidensk. Medd. fra den naturh. Foren. i København 1901: 129-139.
Ostenfeld C.H. (1908) The phytoplankton of the Aral Sea and its affluents, with an enumeration of algae observed. - Wissenschaftliche Ergebnisse der Aralsee-Expedition. Lieferung 8, 123-225, pl. 5.
Ostenfeld C.H. & J. Schmidt (1901) Plankton fra det Røde Hav og Adenbugten (Plankton from the Red Sea and the Gulf of Aden). -  Vidensk. Medd. fra den naturh. Foren. i København 1901: 141 – 182.

Ou L., B. Huang, H. Hong, Y. Qi & S. Lu (2010) Comparative alkaline phosphatase characteristics of the algal bloom dinoflagellates Prorocentrum donghaiense and Alexandrium catenella, and the diatom Skeletonema costatum. - Journal of Phycology 46(2): 260-265.

Owari S., A. Hayashi & K. Ishida (2014) Subcellular localization of minicircle DNA in the dinoflagellate Amphidinium massartii. - Phycological Research 62(1): 1-8.