Induction of Primary Male in Juvenile Red Spotted Grouper Epinephelus akaara by immersion of 17a-methytestosterone

Title
Induction of Primary Male in Juvenile Red Spotted Grouper Epinephelus akaara by immersion of 17a-methytestosterone
Author(s)
이치훈; 허상우; 나오수; 백혜자; 노충환; 한상현; 박지훈; 현지연; 이영돈
KIOST Author(s)
Noh, Choong Hwan(노충환)
Publication Year
2014-10-31
Abstract
At the initiation of an experiment (70 days after hatching,DAH), juvenile red spotted grouper have the paired primordial gonads with somatic cellsbellow kidney in the posterior portion of the body cavity. Formation of ovarian cavityindicates that the ovarian differentiation beginning at 70 DAH in red spotted grouper. At 12months after end of treatment period, control group, 17α-MT 1 mg/L treatment for 4 and 8weeks, and 17α-MT 5 mg/L treatment group for 4 weeks were all female. However,sex-changed males without ovarian cavity were observed in the 17α-MT 5mg/L treatmentgroup for 8 weeks. These results suggested that the red spotted grouper be able to inducethe primary males by hormone treatment prior to gonadal sex differentiation.dicates that the ovarian differentiation beginning at 70 DAH in red spotted grouper. At 12months after end of treatment period, control group, 17α-MT 1 mg/L treatment for 4 and 8weeks, and 17α-MT 5 mg/L treatment group for 4 weeks were all female. However,sex-changed males without ovarian cavity were observed in the 17α-MT 5mg/L treatmentgroup for 8 weeks. These results suggested that the red spotted grouper be able to inducethe primary males by hormone treatment prior to gonadal sex differentiation.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25860
Bibliographic Citation
2014 Korea-Japan joint symposium on aquaculture, pp.81, 2014
Publisher
한국수산과학회
Type
Conference
Language
English
Publisher
한국수산과학회
Related Researcher
Research Interests

Fish genetics and breeding,Living modified organism,Sbtropical mariculture,어류유전육종,어류형질전환,아열대어류양식

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