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Karenia brevis : ウィキペディア英語版
Karenia brevis

''Karenia brevis'' (formerly known as ''Gymnodinium breve'' and ''Ptychodiscus brevis'') is a marine dinoflagellate common in Gulf of Mexico waters, and is the organism responsible for the "tides" (coastal infestations) termed red tides that affect Gulf coasts—of Florida and Texas in the U.S., and nearby coasts of Mexico. It is the source organism for various toxins found present during such "tides," including the eponymously named brevetoxins.
==Description==
''K. brevis'' is a microscopic, single-celled, photosynthetic organism that can "bloom" (see algal bloom) frequently along Florida, Texas, and Mexican coastal waters. Each cell has two flagella that allow it to move through the water in a spinning motion. ''K. brevis'' naturally produces a suite of potent neurotoxins collectively called brevetoxins, which cause gastrointestinal and neurological problems in other organisms and are responsible for large die-offs of marine organisms and seabirds. ''K. brevis'' is unarmored, and does not contain peridinin. Cells are between 20 and 40 μm in diameter.

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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