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JOURNAL OF PLANKTON RESEARCH | VOLUME 9 | NUMBER 4 | PAGES 755-759 | 1987
© Oxford University Press

other

Sperm emission in the chaetognath Sagitta crassa

Sachiko Nagasawa

Ocean Research Institute, University of Tokyo 1–15–1 Minamidai, Nakano-ku, Tokyo 164, Japan

Received on June 24, 1986; accepted on February 2, 1987 Sagitta crassa which had just extruded a sperm ball, together with a tube-like secretion, was obtained from Tokyo Bay for the first time. The question of spermatophores in chaetognaths is discussed.


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