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Karenia bicuneiformis
''Karenia bicuneiformis'', also known as ''Karenia bidigitata'' is a microbial species from the genus ''Karenia'', which are dinoflagellates. It was first discovered in New Zealand.〔Botes, Lizeth, Stuart D. Sym, and Grant C. Pitcher. "Karenia cristata sp. nov. and Karenia bicuneiformis sp. nov.(Gymnodiniales, Dinophyceae): two new Karenia species from the South African coast." Phycologia 42.6 (2003): 563-571.〕
==Description==
Common to the ''Karenia'' genus, this species shares morphological characters such as a smooth theca and a linear apical groove on its apex. At the same time, this species can be distinguished from its cogenerates on the basis of morphological characteristics within its vegetative cells, including the location and shape of its nucleus; the excavation of its hypotheca; the characteristics of its apical and sulcal groove extensions on the epitheca; the shape of its cells, as well as their size and symmetry; the degree of dorsoventral compression; and the presence of an apical carina.
Species that present said dorsoventral compression are shown to swim in a distinctive fluttering motion.〔Rhodes, Lesley, and Susie Wood. "Micro-algal and Cyanobacterial Producers of Biotoxins." Toxins and Biologically Active Compounds from Microalgae 1 (2014): 21.〕〔Kamykowski, D., E. J. Milligan, and R. E. Reed. "Relationships between geotaxis/phototaxis and diel vertical migration in autotrophic dinoflagellates."Journal of Plankton Research 20.9 (1998): 1781-1796.〕
Molecular phylogenetic analyses of rDNA indicates ''Karenia bicuneiformis'', together with ''K. selliformis'' and ''K. papilionacea'', is closely related to ''K. mikimotoi'' and ''K. brevis''.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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