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동해 강원도 연안 임연수어, Pleurogrammus azonus의 연령과 성장

Age and growth of the Okhotsk atka mackerel, Pleurogrammus azonus in the coastal of Gangwon-do, East Sea

  • 양재형 (국립수산과학원 동해수산연구소 자원환경과) ;
  • 윤병선 (국립수산과학원 동해수산연구소 자원환경과) ;
  • 김종빈 (국립수산과학원 동해수산연구소 자원환경과) ;
  • 최영민 (국립수산과학원 고래연구센터) ;
  • 박정호 (국립수산과학원 연근해자원과) ;
  • 이재봉 (국립수산과학원 연근해자원과) ;
  • 박기영 (강릉원주대학교) ;
  • 이동진 (통계청)
  • YANG, Jae-Hyeong (Fisheries Resources and environment Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • YOON, Byoung-Sun (Fisheries Resources and environment Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • KIM, Jong-Bin (Fisheries Resources and environment Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • CHOI, Young-Min (Cetacean Fisheries Institute, National Institute of Fisheries Science) ;
  • PARK, Jeong-Ho (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • LEE, Jae-Bong (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • PARK, Kie-Young (Department of Marine Biotechnololy, Gangneung-Wonju National University) ;
  • LEE, Dong-Jin (Gangneung District Offices of Statistics, Dongbuk Regional Offices of Statistics, Korea Statistics)
  • 투고 : 2017.10.31
  • 심사 : 2018.02.01
  • 발행 : 2018.02.28

초록

The age and growth of Pleurogrammus azonus in the coastal of Gangwon-do, East Sea were determined, from monthly samples of commercial catches, caught by the gill net and set net fishery from January to December in 2008. Gonadosomatic index (GSI) began to increase in September, and reached the maximum between November and December. After spawning GSI began to decrease from January. The annuli of P. azonus are formed once a year, with the boundary between opaque and translucent zones forming from December to January. The relationships between fork length (FL) and body weight (BW) were $BW=0.005FL^{3.240}$($R^2=0.963$) for females and $BW=0.006FL^{3.238}$($R^2=0.946$) for males. The FLs at annuli formation in otoliths were back-calculated from the otolith-length relationship and were adjusted to von Bertalanffy growth curves to $FL_t=70.54(1-{\exp}^{(-0.099(t+1.188))})$ for females and $FL_t=51.87(1-{\exp}^{(-0.135(t+1.697))})$ for males. Until the age of 3 years, males grew faster than females; however, from the age of 4 years, females grew faster than males. In the future, we want to study the relationship between early growth and water temperature changes in the East Sea.

키워드

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