The Sperm Attractant of the Marine Brown Alga Ascophyllum nodosum (Phaeophyceae)

Science  10 Dec 1982:
Vol. 218, Issue 4577, pp. 1119-1120
DOI: 10.1126/science.218.4577.1119


Spermatozoids of the intertidal seaweed Ascophyllum nodosum (Fucales, Phaeophyceae) are attracted to eggs prior to fertilization. The attractant has been isolated and its structure identified as 1(3E, 5Z, 8Z)-undecatetraene (finavarrene). The relation of finavarrene to sex hormones in other brown algae is discussed.