Summary
The range of (presumed) polyketide constituents in comatalid crinoids has been extended to include bianthronyls, meso-naphthodianthrones and sulphate esters of various of the polyketides. Several species of fish are deterred from eating food by the inclusion in it of these sulphates at the concentration found in crinoids. Sodium 2-hydroxy-anthraquinone sulphate and anthraquinone-2-suphonate were also active as antifeedants for the species tested.
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References
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Acknowledgments. This author is indebted to the Australian Research Grants Commission for financial support, to Miss A. Clark of the British Museum of Natural History, London, and Ms J. Marshall of the Australian Museum, Sydney, for identifications of crinoid specimens and to Mr C. Lee, Director of the Deception Bay Laboratory of the Qld. Fisheries Service for providing facilities, fish and valuable advice.
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Rideout, J.A., Smith, N.B. & Sutherland, M.D. Chemical defense of crinoids by polyketide sulphates. Experientia 35, 1273–1274 (1979). https://doi.org/10.1007/BF01963951
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DOI: https://doi.org/10.1007/BF01963951