Effect of Insulin on the Tail Fin Regeneration in the Topminnow, Gambusia affinis

概要

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1. The effect of insulin on the tail fin of the topminnow, 'Gambusia affinis regeneration was studied. After amputating the tail fin, the fish were put in the dilute insulin solution at the temperature 9-15℃. The growth of tail tips was then measured every 7 days during the experiment. It was observed that insulin produces a promoting effect on the growth of tail tips. 2. When, the fish cut in the tail fin were put into the solution containing insulin plus glucose, the promoting effect of insulin on the regeneration was found to be noticeably augumented. 3. It is known that there is some insulin in the body of the fish. The results of the present study shows that cell division in the tail tip seems to be promoted by treating with insulin. The author wishes to express his gratitude to Professor Takashi Fujii of Tokyo University, for providing the opportunity of this research.
琉球大学文理学部の論文