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Age and Growth of Great Tellin, Megangulus venulosus in the Coastal Waters of Gangneung, Korea

강릉해역 접시조개(Megangulus venulosus)의 연령과 성장

  • 안희춘 (국립수산과학원 동해수산연구소) ;
  • 홍성익 (바다생태리서치) ;
  • 배재현 (국립수산과학원 동해수산연구소) ;
  • 김재원 (강원도립대학 해양생명과학과) ;
  • 윤병선 (국립수산과학원 동해수산연구소)
  • Received : 2015.10.19
  • Accepted : 2015.11.23
  • Published : 2015.11.30

Abstract

To investigate the characteristic of age and growth, samples of Megangulus venulosus were collected monthly by dredge in the coastal waters of Gangneung, Korea from January to December 2014. The age of M. venulosus was estimated by measuring the ring radius on the shell. Because the relationship between shell lengths and ring radii in each ring group was regressed well, each ring was considered as an annual growth ring. Based on the monthly variation of the marginal index (MI) of the shell length, it is assumed that the ring of this species was formed once a year during September and November. From the parameters calculated using the average length when the year ring was formed, the estimated von Bertalanffy growth equation were $SL_t=236.3(1-e^{-0.061(t+0.184)})$ in age.

본 연구는 2014년 1월부터 12월까지 강원도 영진 연안에서 패류형망에 의해 채집된 접시조개의 패각을 이용하여 연령과 성장특성을 조사하였다. 접시조개의 윤문형성시기는 9-10월에 연 1회 형성되는 것으로 추정된다. 이론적 최대각장($SL_{\infty}$)은 236.3 mm, 성장계수(k)는 0.061/year의 값을 얻을 수 있었다. 또한 각장이 0일 때의 이론적 연령 t0 는 -0.184 year로 추정되었다. 따라서 접시조개의 각장과 연령과의 성장식은 $SL_t=236.3(1-e^{-0.061(t+0.184)})$ 으로 나타났다.

Keywords

References

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