Growth characteristic of Pacific cod, Gadus macrocephalus in theWest Sea of Korea

한국 서해 대구, Gadus macrocephalus (Tilesius)의 성장특성

  • Kim, Heeyong (Fisheries Resources and Environment Division, Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Kim, Sanghwa (Fisheries Resources and Environment Division, Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Im, Yangjae (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, NFRDI) ;
  • Hwang, Hak Jin (Resources Management Headquarters, Korea Fisheries Resources Agency) ;
  • Huh, Sunjung (Ecology & Environment Division, South Sea Branch, Korea Fisheries Resources Agency)
  • 김희용 (국립수산과학원 남서해수산연구소 자원환경과) ;
  • 김상화 (국립수산과학원 남서해수산연구소 자원환경과) ;
  • 임양재 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 황학진 (한국수산자원관리공단 자원관리본부 전략사업실) ;
  • 허선정 (한국수산자원관리공단 남해지사 생태환경실)
  • Received : 2013.04.15
  • Accepted : 2013.07.27
  • Published : 2013.08.31


The age and growth of the Pacific cod, Gadus macrocephalus were investigated using left sagittal otoliths of 682 individuals collected in the West Sea of Korea from January to December 2007. The seasonal changes in the ratio of an opaque zone to interval between annular rings revealed that the narrow translucent parts of the otolith were annual growth rings formed between February and March once a year. The spawning period was December to January and therefore the duration from fertilization to the complete formation of the opaque zone became thirteen months. From the parameters calculated using the average length when the year ring was formed, the estimated von Bertalanffy growth equations were $L_t=100.0(1-e^{-0.1640(t+0.5247)})$ for females and $L_t=64.6(1-e^{-0.3335 (t+0.3342)})$ for males when is total length in age t.


Supported by : 국립수산과학원


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