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  • Title: Pfiesteria piscicida, P. shumwayae, and other Pfiesteria-like dinoflagellates.
    Author: Miller TR, Belas R.
    Journal: Res Microbiol; 2003 Mar; 154(2):85-90. PubMed ID: 12648722.
    Abstract:
    Pfiesteria piscicida and Pfiesteria shumwayae are estuarine dinoflagellates thought to be responsible for massive fish deaths and associated human illnesses in the southeastern United States. These dinoflagellates are described as having a complex life cycle involving flagellated zoospores, cysts, and amoeboid stages. Although no Pfiesteria toxin has been identified, certain strains of these dinoflagellates are thought to produce a water-soluble toxin that can kill fish and cause human illness. Recent reports show no evidence for amoeboid stages and indicate that a much more simplified life cycle exists. In addition, researchers have shown that P. shumwayae only kills fish through direct contact that does not necessarily involve the production of one or more toxins. This review summarizes these and other recent findings with an emphasis on establishing basic facts regarding the toxicity and life history of Pfiesteria dinoflagellates.
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