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23.killer.plankton

23.killer.plankton - Killer Plankton Introduction...

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Unformatted text preview: Killer Plankton! Introduction Dinoflagellates – Saxitoxins (STX) - “ I can’t breathe!” Brevetoxin (BTX) - “I can’t see!” Diarrhetic shellfish poison (DSP) - “ I can’t stop!” Ciguatoxin (CTX) - “I can’t feel hot and cold!” Diatoms: Domoic acid (DA) - “I can’t remember anything!” Bacteria: Tetrodotoxin (TTX) - “I can’t move!” Red Tides Are Not Always Red! The Problem With Red Tides Toxic plankton – are filtered fed by mussels, clams, oysters, sardines, anchovies, etc. Toxins incorporated into their flesh (muscle). Humans, birds and mammals are impacted when they eat the filter feeders. Dinoflagellates – “Swimming Plants” Most toxic plankton are dinoflagellates – 24 spp. Photosynthetic and have whip-like flagella for swimming. They are filter fed by bivalves and fishes. Produce light when agitated – bioluminescence (warning for native Americans). Dinoflagellates – Alexandrium spp....
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  • Fall '09
  • RonTjeerderma
  • Algal bloom, Seafood, paralytic shellfish poisoning, Dinoflagellate, Diarrheal shellfish poisoning, Causes respiratory paralysis

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23.killer.plankton - Killer Plankton Introduction...

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