Spawning of Mytilus edulis:(7) Acid-inhibition of Spawning by KC1

概要

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When a mantle piece of Mytilus edulis is bathed in M/2 KC1 solution for 5 minutes, a conspicuous, discharge of sexual product is induced in about 1 hour after the treatment. If KC1 solution here used is alkalified by NaOH, the spawning is much accelerated, while if acidulated by HC1, it is inhibited. When a mantle piece is treated with acidic sea water before the KC1 treatment, it is delayed to begin in its spawning, whereas a mantle piece is bathed into acidic sea water after the treatment of KC1, the number of eggs decrease suddenly in its discharge. It may be logical conclusion that K ion is easy to penetrate into cells of ovary in alkaline medium, while it is difficult in acidic medium. The penetration of much K ions into cells may cause the excitation of the ovary. The eggs must be discharged abundantly by the excitation of ovary. Thus KC1 treatment of mantle piece in acidic medium is much powerful to inhibit its spawning.
社団法人日本水産学会の論文