The age and growth of pointhead flounder, Hippoglossoides pinetorum caught by gill nets was analyzed in this study from March 2015 to July 2017. New annuli were formed in H. pinetorum otoliths annually, and the boundary was set between the opaque and translucent zones from March and April. The relationships between total length (TL) and body weight (BW) were BW = 0.0025 TL3.409 (r2 = 0.9551) for females and BW = 0.0057 TL3.138 (r2 = 0.9163) for males. In this study, the ring of pointhead flounder, H. pinetorum was formed between 3 and 8 for females and between 3 and 6 for males. Total length (TL) and otolith radius (OR) were measured as follows: TL = 7.142 OR + 0.769 (r2 = 0.793) for females and TL = 6.498 OR + 1.706 (r2 = 0.652) for males. The mean distances of first ring (r1) were 0.92 mm and 0.91 mm for females and males respectively. The TLs at the time of annulus formation, back-calculated from the otolith-length relationship by reference to the von Bertalanffy growth curves, were Lt = 43.59 (1-e-0.15(t+0.007)) for females and Lt = 28.13 (1-e-0.26(t+0.006)) for males while the growth between female and male was different.

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  성장식 계산
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 References

• 정연규(국립수산과학원 독도수산연구센터) | Yeon Kyu JEONG
• 김성태(국립수산과학원 독도수산연구센터) | Sung Tae KIM
• 윤상철(국립수산과학원 독도수산연구센터) | Sang Chul YOON Corresponding author
• 양재형(동해수산연구소 자원환경과) | Jae Hyeong YANG
• 정경미(국립수산과학원 독도수산연구센터) | Kyung Mi JUNG
• 오택윤(국립수산과학원 독도수산연구센터) | Taek Yun OH
• 최광호(서해수산연구소 자원환경과) | Kwang Ho CHOI