Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Reproductive Cycle of the Brown sole, Limanda herzensteini in Eastern Waters of Korea

동해안 참가자미, Limanda herzensteini의 생식주기

  • 장윤정 (동해지방해양수산청) ;
  • 이정용 (국립수산과학원 강릉수산종묘시험) ;
  • 장영진 (부경대학교 양식학과)
  • Published : 2004.05.01
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Abstract

Reproductive cycle of the brown sole, Limanda herzensteini was investigated by means of histological methods. The testis showed the presence of seminiferous tubule. The tubule consisted of many testicular cysts, each of which contained numerous germ cells - all at the same developmental stage. The ovary consisted of several ovarian lamellae and the oogonia originated from the inner surface of the ovarian lamella. Oocyte development was group-synchronous. Gonadosomatic index (GSI) of the male and female was the highest in January and March, respectively. Reproductive cycle could be classified into the growing (June-September), maturation (October-December), ripe and spent (January-March), and recovery and resting (April-May).

이 연구에서는 자연산 참가자미의 주 어획지역인 강원도 주문진 인근해역에서 1998년 9월부터 1999년 10월까지 연간 생식소중량지수의 변화를 조사하였으며, 조직학적 조사에 의한 생식소 발달과정과 생식주기를 밝혔다. 정소는 정소소엽 형태이며, 각각의 정소엽은 여러 개의 소낭구조를 가진다. 각 소낭내의 생식세포들은 같은 단계의 발달상태를 보인다. 난소는 원추형의 낭상으로 체강벽에서 연결되는 난소간막에 의해 부착되어 있으며, 내부는 결체성 조직인 다수의 난소박판으로 구성되며, 이곳에서 난원세포가 유래한다. 수컷의 GSI는 1월에 가장 높았으며, 암컷의 GSI는 3월에 가장 높은 값을 보였다. 생식주기는 성장기(6∼9월), 성숙기(10∼12월), 완숙 및 산란기(1∼3월)그리고 회복 및 휴지기(4∼5월)로 나눌 수 있었다. 난모세포의 발달양식은 난군동기발달형에 속하였다.

Keywords

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