Spawning of Starfish: Action of Gamete-Shedding Substance Obtained from Radial Nerves

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Science  27 Nov 1964:
Vol. 146, Issue 3648, pp. 1177-1179
DOI: 10.1126/science.146.3648.1177


An extract of the radial nerves of the starfish, Asterias amurensis, acts on the ovary in two ways: it induces meiosis and brings on spawning. Contraction of the gonadal wall, the, driving force for spawning, does not happen until this gamete-shedding substance acts to liberate the eggs that adhere to each other or to the inner surface of the gonadal wall.