{"refrec":{"BRefID":332326,"RR":"<b>Gómez, F.; Artigas, L.F.; Gast, R.J.</b> (2020). Phylogeny and synonymy of <i>Gyrodinium heterostriatum</i> comb. nov. (Dinophyceae), a common unarmored dinoflagellate in the World Oceans. <i>Acta Protozool. 59(2)</i>: 77–87. <a href=\"https://dx.doi.org/10.4467/16890027AP.20.007.1267\" target=\"_blank\">https://dx.doi.org/10.4467/16890027AP.20.007.1267</a>","BEntID":325938,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Acta Protozool. 59(2)</i>: 77–87. <a href=\"https://dx.doi.org/10.4467/16890027AP.20.007.1267\" target=\"_blank\">https://dx.doi.org/10.4467/16890027AP.20.007.1267</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Gómez, F.; Artigas, L.F.; Gast, R.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Gómez, F.; Artigas, L.F.; Gast, R.J.","Englishabstract":"The North Sea and the English Channel are regions with a long tradition of plankton studies, where the colony-forming haptophyte <em>Phaeocystis globosa </em>dominates the spring phytoplankton blooms. Among its predators, we investigated an abundant unarmored dinoflagellate (~3000 cells per liter) in the North Sea in May 2019. It has been reported in the literature as <em>Gymnodinium heterostriatum </em>or <em>G. striatissimum</em>, and often identified as <em>Gyrodinium spirale</em>. Phylogenetic analyses using the small-, large subunit- and Internal Transcriber Spacers of the ribosomal RNA (SSU-, LSU-, ITS rRNA) gene sequences indicate that our isolates clustered within the <em>Gyrodinium </em>clade. The new sequences formed a sister group with sequences of the freshwater taxon <em>Gyrodinium helveticum</em>, being one of the infrequent marine-freshwater transitions in the microbial world. This isolate is the first characterized member of a clade of numerous environmental sequences widely distributed from cold to tropical seas. This common and abundant taxon has received several names due to its morphological plasticity (changes of size and shape, often deformed after engulfing prey) and the difficulty in discerning surface striation. We conclude that the priority is for the species name <em>Gymnodinium heterostriatum </em>Kofoid & Swezy 1921, a new name that was proposed for <em>Gymnodinium spirale </em>var. <em>obtusum </em>sensu Dogiel 1906. The species <em>Gyrodinium striatissimum </em>(Hulburt 1957) Gert Hansen & Moestrup 2000 and <em>Gymnodinium lucidum </em>D. Ballantine in Parke & Dixon 1964 (=<em>G. hyalinum </em>M. Lebour 1925) are posterior synonyms. We propose <em>Gyrodinium heterostriatum </em>comb. nov. for <em>Gymnodinium heterostriatum.</em>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Phylogeny and synonymy of <i>Gyrodinium heterostriatum</i> comb. nov. 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