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    Biotransfer/accumulation of toxins produced by dinoflagellate Prorocentrum concavum to domino damsel (Dascyllus trimaculatus) fish

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    Author
    Kosa, Maha Bahjat, 1962-
    Issue Date
    1991
    Keywords
    Agriculture, Food Science and Technology.
    Health Sciences, Toxicology.
    Advisor
    Park, Douglas L.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Toxic dinoflagellate Prorocentrum concavum cells (DC) implicated in ciguatera poisoning were lyophilized and mixed with a standard fish food and fed to Domino damsel fish (Dascyllus trimaculatus). Damsel fish fed 50/50-SC/DC and 100% DC diets exhibited physical and behavioral changes as well as death. Feed refusal was apparent among the fish fed 100% DC diet. Toxicity of the control group could be attributed to previous exposure of the fish to other polyether compounds in its natural habitat or even other chemicals. Fish extracts of both control and treatment groups were toxic when tested on the Stick-enzyme immunoassay for ciguatoxin. Okadaic acid was detected in P. concavum, but no okadaic acid was found in any of the fish tissue extracts. Further studies are needed to determine the transfer of toxin to the fish through diet before any conclusion is made.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Nutrition and Food Sciences
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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