FIG. 3.

UPGMA phylogram based on cob barcode region for cultured dinoflagellate species. Bootstrap values were based on 500 replications; the thickest branches denote bootstrap values of >95%, medium-thick branches values of 75 to 95%, and thin branches values of <75%. Major groups of dinoflagellates were identified to the right: Gon, Gonyaulacales; Per, Peridiniales; Pro, Prorocentrales; Gym, Gymnodiniales; Sue, Suessiales. Highlighted in boxes are intraspecific strains that were highly identical (>99.5%). The scale bar indicates the substitution rate per nucleotide (0.1).