Abstract
Methanol extracts of freshly harvested cells of the marine diatom Phaeodactylum tricornutum were found to produce a feeding deterrent effect in the copepod Tigriopus californicus. Bioassay guided fractionation of the methanol extracts led to the isolation of four compounds possessing feeding deterrent activity. The compounds were identified as apo-10′-fucoxanthinal (1), apo-12′-fucoxanthinal (2), apo-12-fucoxanthinal (3), and apo-13′-fucoxanthinone (4) by detailed spectroscopic analysis and comparison with authentic compounds produced semi-synthetically from fucoxanthin. Compounds 1 to 4 exhibited feeding deterrent responses in T. californicus at concentrations of less than 20 ppm.
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Communicated by R.J. Thompson, St. John's
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Shaw, B.A., Andersen, R.J. & Harrison, P.J. Feeding deterrence properties of apo-fucoxanthinoids from marine diatoms. I. Chemical structures of apo-fucoxanthinoids produced by Phaeodactylum tricornutum . Marine Biology 124, 467–472 (1995). https://doi.org/10.1007/BF00363921
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DOI: https://doi.org/10.1007/BF00363921