한국어류학회지 (Korean Journal of Ichthyology)
- 제13권3호
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- Pages.201-209
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- 2001
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- 1225-8598(pISSN)
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- 2288-3371(eISSN)
농어, Lateolabrax japonicus의 생식주기
Reproductive Cycle of Seabass, Lateolabrax japonicus
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Kang, Duck-Young
(Keoje Marine Hatchery, NFRDI) ;
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Han, Hyoung-Kyun
(Keoje Marine Hatchery, NFRDI) ;
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An, Cheul-Min
(Department of Aquaculture, National Fisheries Research & Development Institute)
- 투고 : 2001.07.31
- 심사 : 2001.09.15
- 발행 : 2001.09.28
초록
본 연구는 농어과, 농어속 어류인 농어 (L. japonicus)를 대상으로 생식주기를 조사한 것이다. 생식소중량지수 (GSI)는 암컷의 경우 10월부터 증가하기 시작하여 2월에 연중 최대값을 나타내었으며, 수컷 생식소중량지수는 12월에 연중 최대값을 나타내었다. 생식소의 월별 조직학적 변화와 생식소중량지수 변화를 토대로 생식주기는 3월~8월의 퇴화 및 휴지기, 9월~11월의 성장기, 11월~12월의 성숙기, 12월~3월의 산란기 등으로 구분할 수 있었다.
Annual reproductive cycle of seabass, Lateolabrax japonicus, was histologically investigated based on samples captured on the coast of the Tongyoung, South Korea. The gonadosomatic index (GSI) of females began to increase in October and reached its maximum in February. The GSI of males reached its maximum in December. The change of GSI and gonadal tissue showed that the annual reproductive cycle was classified into the following successive four stages: (1) the degenerative and resting stage from March to August, (2) the growth stage from September to November, (3) the mature stage from November to December, and (4) the ripe and spawning stage from December to March.