Biol. Bull.
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Biol Bull 123: 203-206. (August 1962)
© 1962 Marine Biological Laboratory
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ELECTRICAL INDUCTION OF SPAWNING IN TWO MARINE INVERTEBRATES (URECHIS UNICINCTUS, HERMAPHRODITIC MYTILUS EDULIS)

YASUO SUGIURA 1

1 Misaki Senior High School, Miura-Shi, Kanagawa Prefecture, Japan

1. Electrical stimulation of spawning was tried on Urechis unicinctus and hermaphroditic Mytilus edulis.

2. Urechis reacts immediately, and if over-stimulation is guarded against, samples can be repeatedly obtained from the same individual, which would be very advantageous for some kinds of experiments.

3. Excised pieces of hermaphroditic Mytilus were stimulated electrically to spawn; the gametes so obtained showed perfect self-fertility.






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