Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
권호 표지

Age and Growth of Shotted Halibut Eopsetta grigorjewi in the East China Sea

동중국해에 분포하는 물가자미(Eopsetta grigorjewi)의 연령과 성장

  • Received : 2010.12.01
  • Accepted : 2011.03.28
  • Published : 2011.03.31
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Abstract

Age and growth of shotted halibut Eopsetta grigorjewi were estimated using right sagittal otoliths of 389 fish specimens from February 2004 to January 2005 in the East China Sea. Examination of outer margins of the otolith showed that the opaque zone was formed once a year and annual rings were formed from December to March. The age of specimens examined ranged from 3 to 5 years. Shotted halibut begin spawning in February and show a peak in March. Length and weight relationships showed no significant difference between females and males (P>0.05), and can be expressed as TW=$0.5091{\times}10^{-2}TL^{3,222}(r^2=0.92)$. Estimated von Bertalanffy growth curve was $L_t=46.58(1-e^{-0.14(1+1.32)})$.

물가자미의 표본은 동중국해 및 동해에서 중형 외끌이기선저인망에 의해 2004년 2월부터 2005년 1월까지 어획된 것이다. 총 389개체 표본의 오른쪽 이석을 연령형질로 사용하여 연령과 성장을 추정하였다. 윤문은 12~3월(주형성시기 2월), 연 1회 형성되는 것으로 나타났다. 산란시기는 2~4월(주산란시기 3월)이었다. 전장과 전중과의 상대성장식은 $TW=0.5091{\times}10^{-2}TL^{3,222}$ ($r^2=0.92$)로 나타났고, 암 수간의 상대성장식 유의한 차이가 없는 것으로 나타났다(P>0.05), 추정된 von Bertalanffy 성장식은 $L_t=46.58(1-e^{-0.14(1+1.32)})$로 추정되었다. 암 수간의 연령별 성장에는 차이가 없는 것으로 나타났다(P>0.05).

Keywords

References

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