Induced Ovulation in the Mandarin Fish, Siniperca scherzeri by Sex-Maturation Hormones

성성숙 호르몬 처리에 의한 쏘가리의 배란 유도

  • 장선일 (국립수산진흥원 청평내수면 연구소) ;
  • 이완옥 (국립수산진흥원 청평내수면연구소) ;
  • 이종윤 (국립수산진흥원 청평내수면연구소) ;
  • 손송정 (국립수산진흥원 청평내수면연구소)
  • Published : 1998.11.01

Abstract

Ovulation of maturing femal mandarin fish, Siniperca scherzeri was induced using single injection of human chorionic gonadotropin (HCG) or gonadotropin releasing hormone-analogue (GnRH-a), GnRH-a plus prostaglandin F2 (PG$F_2$) or GnRH-a plus pimozide. The response was evaluated by fertilization, embryo-formation and hatching rate after insemination. Those rates were generally higher in GnRH-a group than in HCG group. The higher hatching rat of above 89% was achived using a dosage of 5,000 IU/kg HCG plus 10 ${\mu}$g/kg GnRH-a, 10${\mu}$g/kg GnRH-a plus 500 ng/kg PGF2, and 10 ug/kg GnRH-a plus 1-5 mg/kg pimozide. Ovulation was induced in all female injected with sex-maturation hormones and stimulator, but blocked in female injected with HCG plus GnRH-a plus dopamine combination, and GnRH-a plus PGF2 plus indometacin combination. These results show that the mandarin fish in spawning period secrete a sex-mutruation assosiated hormones and gonadotropin-releasing -inhibiting factor(GRIF).

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