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      Control of toxic marine dinoflagellate blooms by serial parasitic killers.

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          Abstract

          The marine dinoflagellates commonly responsible for toxic red tides are parasitized by other dinoflagellate species. Using culture-independent environmental ribosomal RNA sequences and fluorescence markers, we identified host-specific infections among several species. Each parasitoid produces 60 to 400 offspring, leading to extraordinarily rapid control of the host's population. During 3 consecutive years of observation in a natural estuary, all dinoflagellates observed were chronically infected, and a given host species was infected by a single genetically distinct parasite year after year. Our observations in natural ecosystems suggest that although bloom-forming dinoflagellates may escape control by grazing organisms, they eventually succumb to parasite attack.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Nov 21 2008
          : 322
          : 5905
          Affiliations
          [1 ] Station Biologique, CNRS, UMR 7144, Place Georges Teissier, 29682 Roscoff Cedex, France; and Laboratoire Adaptation et Diversité en Milieu Marin, Université Pierre et Marie Curie, Paris 6, Paris, France.
          Article
          322/5905/1254
          10.1126/science.1164387
          19023082
          81b40fa7-61af-4f24-81ec-3bd10ff244a4
          History

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