Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Maturation and spawning of female black scraper, Thamnaconus modestus in the coastal waters off Middle East Sea, Korea

동해 중부해역에 출현하는 말쥐치(Thamnaconus modestus) 암컷의 성숙과 산란

  • NAM, Ki-Mun (Pukyong Marine Life Research Institute) ;
  • YOO, Jun-Taek (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • KIM, Jea-Won (Department of Marine Life Science & Aquaculture, Gangwon Provincial College) ;
  • PARK, Jong Hyeok (Department of Seafood and Aquaculture Science/Institute of Marine Industry/Marine Bio-Education and Research Center, Gyeongsang National University) ;
  • BAECK, Gun Wook (Department of Seafood and Aquaculture Science/Institute of Marine Industry/Marine Bio-Education and Research Center, Gyeongsang National University)
  • 남기문 (부경해양생물연구소) ;
  • 유준택 (국립수산과학원 수산자원연구센터) ;
  • 김재원 (강원도립대학교 해양생명과학과) ;
  • 박종혁 (경상대학교 해양식품생명의학과/해양산업연구소/해양생물교육연구센터) ;
  • 백근욱 (경상대학교 해양식품생명의학과/해양산업연구소/해양생물교육연구센터)
  • Received : 2017.12.28
  • Accepted : 2018.02.23
  • Published : 2018.02.28
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Abstract

The maturation and spawning of black scraper, Thamnaconus modestus were studied using samples collected monthly from March, 2015 to February, 2016 in the coastal waters off Middle East Sea, Korea. The gonadosomatic index (GSI) of female was the highest in June. The spawning periods lasted from March to September based on histological observation of female gonad development. The percentage of sexually mature females estimated from a logistic function was over 50% for the size group 18.02 cm (total length, TL). The size of eggs spawned was between 0.40 to 0.58 mm. Fecundity varied between 185,648 and 9,747,250 eggs. The relationship between the fecundity and TL of the fish was expressed in the fecundity equation as $F=0.0297TL^{5.4835}$.

Keywords

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