Dictyota dichotoma (Phaeophyceae): Identification of the Sperm Attractant

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Science  29 May 1981:
Vol. 212, Issue 4498, pp. 1040-1041
DOI: 10.1126/science.212.4498.1040


Freshly released eggs of the marine brown alga Dictyota dichotoma secrete a substance that attracts spermatozoids. This compound has been identified as n-butyl-cyclohepta-2,5-diene. It is closely related to attractants in several other brown algae and confirms that a relation exists between phylogeny and attractant compounds.