Morphological and Skeletal Development and Larvae and Juvenile of Sebastes koreanus (Pisces: Scorpaenidae)

황해볼락(Sebastes koreanus) 자치어의 형태 및 골격발달

  • Park, Jae Min (Gyeongsangbuk-do Native Fish Business Center) ;
  • Cho, Jae Kwon (Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Han, Hyun (Chonnam National University, Department of Aqualife Science) ;
  • Han, Kyeong Ho (Chonnam National University, Department of Aqualife Science)
  • 박재민 (경상북도 토속어류산업화센터) ;
  • 조재권 (남서해수산연구소 해역산업과) ;
  • 한현 (전남대학교 양식생물학전공) ;
  • 한경호 (전남대학교 양식생물학전공)
  • Received : 2014.11.14
  • Accepted : 2015.02.28
  • Published : 2015.03.31

Abstract

The morphological and skeletal development and larvae and juvenile of Sebastes koreanus were studied. The Sebastes koreanus were caught at Yeosu-si, Jeolla-namdo from March in 2014. Larvae beared at water temperature of $13.5{\sim}15.5^{\circ}C$ (mean $14.5{\pm}0.1^{\circ}C$). The just beared larvae were 6.38~6.43mm(mean $6.40{\pm}0.02mm$, n=5) in total length and their mouth and anus were already opened. They began to eat rotifer and transformed to postlarva stage. 5 days after bearing postlarvae was measured 6.45~6.49 mm (mean $6.47{\pm}0.02mm$) in total length. 15 days after bearing postlarvae was measured 6.55~6.72mm(mean $6.64{\pm}0.08mm$) in total length. 60 days after bearing juvenile was measured 15.5~20.0 mm (mean $17.7{\pm}2.25mm$) in total length with dorsal fin rays X IV-12~13; anal fin rays III-7; caudal fin rays 16.

본 연구는 황해볼락 자치어의 형태 및 골격발달을 관찰하여 분류학적 연구의 기초자료로 이용하고자 실시하였다. 실험에 이용된 어미는 2014년 3월 전라남도 여수시 주변해역에서 포획한 것을 이용하였다. 산출된 자어의 사육수온은 $13.5{\sim}15.5^{\circ}C$(평균 $14.5{\pm}0.1^{\circ}C$)였다. 산출 직후의 후기 자어는 전장 6.38~6.43 mm (평균 $6.40{\pm}0.02mm$, n=5)로 입과 항문이 열려 있었고 먹이를 섭취하기 시작하였다. 산출 후 5일째 후기자어는 전장 6.45~6.49mm(평균 $6.47{\pm}0.02mm$)였다. 산출 후 15일째 후기자어는 6.55~6.72 mm (평균 $6.64{\pm}0.08mm$)였다. 산출 후 60일째 치어는 전장 15.5~20.0mm(평균 $17.7{\pm}2.25mm$)로 이 시기에는 등지느러미 극조 14개, 연조 12개였고, 뒷지느러미 극조 3개, 연조 7개였으며, 꼬리지느러미 줄기 수는 16개였다.

Keywords

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