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Image #   29433C
Name:   Toxic marine dinoflagellate (Karenia brevis)
Copyright:   Copyright 2011 Dennis Kunkel Microscopy, Inc.
Description:   Description: Toxic marine dinoflagellate (Karenia brevis). Karenia brevis (previously known as Gymnodinium breve and Ptychodiscus brevis) is a marine dinoflagellate (microalga) that causes an algal bloom known as toxic red tide (red tide bloom). Dinoflagellates are microscopic, unicellular, flagellated, often photosynthetic protists (algae). K. brevis is a gymnodinioid dinoflagellate with an equatorial groove or girdle containing one flagellum (undulating flagellum) and a second flagellum that trails behind the cell. This dinoflagellate produces a toxin called brevetoxin, which affects the central nervous system of fish. People can become ill with neurotoxic shellfish poisoning (NSP) when they eat shellfish that have accumulated brevetoxin and can also experience respiratory irritation (coughing, sneezing, and tearing) when a red tide bloom is present close to shore. K. brevis has come to be known as the Florida gulf coast red tide organism, it has been implicated in blooms on Florida?s east coast. It has also been implicated in red tide blooms in Louisiana, Texas, Mississippi, Mexico, and the Carolinas.
Type: SEM
Magnification:* x1,065
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   29433C algae alga dinoflagellate dinoflagellates Karenia brevis toxic bloom toxic marine toxic bloom red tide Florida red tide marine plankton plankton Scott marine plankton phytoplankton SEM marine alga marine algae marine dinoflagellate marine dinoflagellates marine phytoplankton marine planton planktonic red tide dinoflagellate red tide dinoflagellates red tide organism red tide organisms toxic blooms marine toxin salt water alga salt water algae saltwater alga saltwater algae sea water alga sea water algae seawater alga seawater algae toxic blooming algae toxic marine alga toxic marine algae Gymnodinium breve Karenia Gymnodinium Ptychodiscus Ptychodiscus brevis microalga microalgae algae bloom algae blooms algal bloom algal blooms gymnodinioid gymnodinioid dinoflagellate gymnodinioid dinoflagellates red tide bloom red tides 06.01.11 NSP neurotoxic neurotoxic poisoning neurotoxic shellfish neurotoxic shellfish poisoning neurotoxin bloom dinoflagellate bloom dinoflagellates toxic dinoflagellate toxic dinoflagellates marine protist marine protists protist protists gymnodinioids flagella flagellum undulating flagella undulating flagellum algae toxin algae toxins algal toxin algal toxins brevetoxin brevetoxins toxin toxins Florida gulf coast red tide organism Florida red tide bloom Florida red tide blooms Florida red tides respiratory distress respiratory irritation alga bloom alga blooms alga toxin alga toxins eukaryote eukaryotic

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