Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Reproductive Cycle and Gonadal Development of the Naked-Headed Goby, Favonigobius gymnauchen (Teleostei : Gobiidae)

날개망둑 (Faronigobius gymnauchen)의 생식주기 및 생식소 발달

  • LEE Jung Sick (Department of Fish Pathology, Yosu National University) ;
  • KIM Jae Won (Department of Marine Biology, Pukyong National University) ;
  • KANG Ju-Chan (Department of Aquatic Life Medicine, Pukyong National University) ;
  • SHIN Yun Kyung (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • CHIN Pyung (Department of Marine Biology, Pukyong National University)
  • 이정식 (여수대학교 어병학과) ;
  • 김재원 (부경대학교 해양생물학과) ;
  • 강주찬 (부경대학교 수산생명의학과) ;
  • 신윤경 (국립수산진흥원 남해수산연구소) ;
  • 진평 (부경대학교 해양생물학과)
  • Published : 2000.05.01
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Abstract

Reproductive biology of the naked-headed goby, Faronigobius gymnauchen was investigated by means of histological methods. The ovary was consisted of several ovarian lamellae and the oogonia originated from the inner surface of the ovarian lamella. The testis was seminiferous tubule One in internal structure. Seminiferous tubule was consisted of many testicular cysts which contained numerous germ cells in a same developmental stage. The size of group maturity was 4.5 cm intotal length. Gonadosomatic index(GSI) of the female and male was the highest in June and July, respectively. Reproductive cycle could be classified into the growing ($January{\~}March$), maturation ($April{\~}May$), ripe and spent (June{\~}July$), and recovery and resting ($August{\~}December$). Oocyte development was group-synchronous, and yolk nucleus was observed in the early growing oocyte.

난소의 내부는 결체성 조직인 다수의 난소박판으로 구성되며, 이곳에서 난원세포가 유래한다 정소조직상은 정세관 형태이며, 각각의 정세관은 여러 개의 소낭구조를 가진다. 각 소낭내의 생식 세포들은 같은 단계의 발달상태를 보인다. 군 성숙도에 도달하는 크기는 암${cdot}$수 모두 전장 4.5 cm이다. 암컷의 GSI는 6월에 가장 높은 값을 나타냈으며, 수컷의 GSI는 7월에 가장 높은 값을 나타냈다. 생식주기는 성장기 ($1{\~}3$월), 성숙기 ($4{\~}5$월), 완숙 및 산란기 ($6{\~}7$월) 그리고 회복 및 휴지기 ($8{\~}12$월)로 나눌 수 있었다. 난모세포 발달양식은 난군동기발달형에 속하며, 초기 성장기 난모세포의 세포질에서 난황핵이 관찰되었다.

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