초록

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이스라엘 잉어 난모세포의 발달단계와 혈청중 호르몬 농도의 변화를 알기 위해서 2월부터 3월까지 본 연구를 수행했다. 본 연구에서 얻어진 결과는 다음과 같다. 1. 난소가 발달되는 3월에 들어와서 혈청중 LH 수준이 급격히 상승하기 시작했다. 2. LH 수준은 G.S.I.의 변화와 높은 상관관계에 있었다. 3. 3월경부터 G.S.I.가 급격하게 증가했다 4. 3월중에는 성숙단계가 상당히 증가했다. 5. Early Perinuclcolus oocyte가 late perinucleolus core로의 빠른 발달을 나타냈다. 6. 난황이 축적됨으로써 late perinucleolus oocyte가 초기성숙단계인 oocyte로 되는 시기에 vitellogenesis가 시작되었다. 7. Oocyte가 후기성숙단계에 도달했을 때 세포질내에 난황으로 가득 채워졌다. 8. 이스라엘 잉어 난소의 헌미경적 형태의 변화는 G.S.I. 외관상의 변화와 연관성이 깊었다 9. LH는 이스라엘 잉어의 성성숙에 중요한 역할을 수행하는 것으로 나타났다.

Abstract ▼ AI-Helper

This study was undertaken to understand development stage of ovary and changes of hormone concentrations in the Israeli carp, Cyprinus carpio from Ferbruary to May. The results obtained in these experiments are as follows: 1. Serum LH levels began to increase sharply in March, coinciding with the on...

This study was undertaken to understand development stage of ovary and changes of hormone concentrations in the Israeli carp, Cyprinus carpio from Ferbruary to May. The results obtained in these experiments are as follows: 1. Serum LH levels began to increase sharply in March, coinciding with the onset of rapid ovarian development. 2. LH levels were well correlated with changes in gonadosomatic index. 3. Dramatic increase in gonadosomatic index occured during the months of March. 4. Ripe stage(Stage VII) rapidly increase in March. 5. Early perinucleolus oocyte rapidly develop into late perinucleolus oocytes in March. 6. The vitellogenic phase begins as these late perinucleolus oocytes become transformed into early maturing oocytes through the accumulation of yolk. 7. The cytoplasm completely fills with yolk as oocytes reach the late maturing stage. 8. Changes in the microscopic appearances of the ovaries were well correlated with changes in both gonadosomatic index and macroscopic appearance. 9. It is concluded from these observations that LH plays a major role in sexual maturating of the Israeli carp.