Age and Growth of Red Tongue Sole (Cynoglossus joyneri) in the Southern Sea of Korea

남해 참서대 (Cynogiossus joyneri)의 연령과 성장

  • BAECK Gun Wook (Department of Oceanography, Pukyong National University) ;
  • HUH Sung-Hoi (Department of Oceanography, Pukyong National University)
  • Published : 2004.08.01


Age and growth of red tongue sole (Cynoglossus joyneri), were studied using samples from the coastal waters off Yeosu, Korea, from January to December, 2001. Sagittal otoliths had relatively clear annuli. Marginal index of otolith dropped sharhly in August suggesting that each annulus was formed once a year In August. Monthly changes in the gonadosomatic index indicated that spawning peaked between July and September. The oldest fish observed in this study was 4 years old for both of females and males. Relationships between the otolith radius (R) and total length (L) were: L=14.1R-0.098 for females, and L=11.9R+1.83 for males. Relationships between total length and body weight $(W)\;were:\;W=0.0021L^{3.24}\;for\;females,\;and\;W=0.0014L^{3.39}$ for males. Growth in length of the fish was expressed by the von Bertalanffy's growth equation as:$L_{t}=29.06\;(1-e^{-0.19(t+2.40)})\;for\;females\;and\;L_{t}=27.44 (1-e^{-0.17(t+2.84)})$ for males.


Cynoglossus joyneri;Age and growth;Otolith


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