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ISSN : 1225-3480
본 연구는 북방전복의 생식생물학적 정보를 제공하고 아울러 성의 인위적인 조절에 필요한 정보를 제공하기 위하여 수행하였다. 북방전복의 형태학적 성분화 과정은 크게 다음과 같이 5단계로 구분할 수 있었다. 1) 생식소 외막 형성 (FGOM) (<TEX>${\leq}SL\;10.0{\pm}1.0mm$</TEX>), 2) 장과 간췌장 사이의 결체조직에 시원생식세포 (PGCs: primordial germ cells) 출현 (PAC) 및 생식소 내강 형성 (FGC) (SL <TEX>$15.0{\pm}2.0mm$</TEX>), 3) 생식소 내강 상피층에 PGCs 출현 (PAG) (SL <TEX>$18.0{\pm}2.0mm$</TEX>), 4) 생식세포형성소낭 형성, 초기 난모세포 및 정원세포 출현 (FGOC) (SL <TEX>$21.0{\pm}2.0mm$</TEX>), 5) 형태학적 성분화 (MSD) (<TEX>${\geq}SL\;23.0{\pm}2.0mm$</TEX>). 조직학적 분석 결과, 각장 24.1-25.0 mm 그룹에서 북방전복의 성분화율은 90.0%였으며, 성비 (암:수)는 1:0.8로 나타났다.
This study was conducted to provide the reproductive biological information and basic data on the artificial sex control of Haliotis discus hannai. The morphological sex differentiation process of H. discus hannai could be classified into following five phases: 1) formation of gonad outer membrane (FGOM) (≤ SL 10.0 ± 1.0 mm), 2) primordial germ cells (PGCs) appearance in the connective tissue between intestine and hepatopancreas (PAC), and formation of gonadal cavity (FGC) (SL 15.0 ± 2.0 mm), 3) PGCs appearance in the epithelial layer of gonadal cavity (PAG) (SL 18.0 ± 2.0 mm), 4) formation of gametogenic follicle and appearance of early oocytes and spermatogonia (FGOC) (SL 21.0 ± 2.0 mm), 5) morphological sex differentiation (MSD) (≥ SL 23.0 ± 2.0 mm). From histological analysis sex differentiation rate in SL 24.1-25.0 mm of H. discus hannai was 90.0% and sex ratio (female : male) was 1:0.8.
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