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자료유형
학술저널
저자정보
저널정보
한국수산과학회 양식분과 한국양식학회지 한국양식학회지 제10권 제2호
발행연도
1997.5
수록면
179 - 187 (9page)

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Early development, growth and sexual phenomena of the hybrid between male spotted flounder (Verasper variegatus) and female olive flounder (Paralichthys olivaceus) were investigated. The hybrid produced was newly called the "Bumnupchi" in Korean name, "Mottled flounder" in English name. Fertilization rate, hatching rate and early survival rate of the mottled flounder were 56.9~72.3%, 86.7~92.5% and 89.1~96.0%, respectively. At 50th day and 240th day after hatching, they were 2.1±0.2 ㎝ and 22.9±2.1 ㎝ in total length, 0.10±0.02 g and 179.0±38.5 g in body weight, respectively. Eye position of the mottled flounder was mixed with both dextral (77.7%) and sinistral type (22.3%). Gonads were differentiated into ovarian type and testis type at 80th day after hatching, and its ratio was 1 : 1 (p>0.05). Most Gonads seemed to be sterile without having germ cell, whereas only 3.6% of investigated individuals turned out to have oocytes in the gonad. When the induction of sex reversal were attempted by daily oral administration of 17β-methyltestosterone (0.5 ㎎/㎏ fish) and estradiol-17β (0.5 ㎎/㎏ fish) from 40th to 100th day after hatching, both testis and ovary type were induced 81.9% and 87.7% of each hormone-treated fish, respectively.

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UCI(KEPA) : I410-ECN-0101-2009-529-015349812