On the acceleration of spawning in aloach, Misgurnus anguillicaudatus (CANTOR), by injection of the hypohyses of the same species

概要

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1) in this research it has been confirmed that the ovulation of female loaches was accelerated by injection of the hypohyses. 2) The female loaches most adequated for the purpose are those with softly swelled abdomen and pectoral fins and the anus around which were congested. 3) After the implantation of 3-4 pieces of hypohyses in each female, the recipients were kept in water from 28°C to 30°C. 4) The loaches artificially spawned in 14-15 hours after the injection produced mature eggs. 5) The ovaries of immature loaches were accelrated to develop by twice in jections. Some of them spawned mature eggs, but most of them developed abnormaliy and were died before hatching.
日本魚類学会の論文