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Report on a biochemical red tide repressive agent

E C Kutt, D F Martin

    Environmental Letters
    |January 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Researchers identified a blue-green algae, Gomphosphaeria aponina, and its toxin as a potential biological control agent. This toxin proved lethal to the Florida red tide organism, Gymnodinium breve Davis.

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    Area of Science:

    • Marine Biology
    • Algology
    • Ecology

    Background:

    • Red tide outbreaks, particularly caused by Gymnodinium breve Davis, pose significant ecological and economic challenges.
    • Natural predators and biocontrol agents are sought to mitigate the impact of harmful algal blooms.

    Purpose of the Study:

    • To identify naturally occurring organisms that could serve as biocontrol agents against red tide.
    • To characterize a toxin produced by a promising candidate organism and assess its efficacy against Gymnodinium breve.

    Main Methods:

    • Isolation and identification of organisms from a 1973 red tide outbreak.
    • Culturing of candidate organisms, including a ciliate (Tintinnideae spp.) and a blue-green alga (Gomphosphaeria aponina).
    • Characterization of a toxin produced by Gomphosphaeria aponina and testing its toxicity against Gymnodinium breve.

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    Main Results:

    • Two potential biocontrol organisms were isolated: Tintinnideae spp. and Gomphosphaeria aponina.
    • A toxin isolated from Gomphosphaeria aponina was found to be lethal to Gymnodinium breve.
    • This suggests a potential natural mechanism for controlling red tide proliferation.

    Conclusions:

    • Gomphosphaeria aponina and its associated toxin represent a promising avenue for the biological control of Florida red tide.
    • Further research into the toxin's properties and application could lead to novel red tide management strategies.