Abstract
The age and growth of the blackthroat seaperch Doederleinia berycoides was investigated based on samples captured in the southern seas of Korea from January to December, 2006. Age was estimated by analyzing otolith growth rings. The spawning period was extrapolated from August to November based on monthly changes in the gonad somatic index. The relationship between total length and otolith radius was analyzed separately for each sex with TL=-15.6174+10.3274R for females and TL=-4.4083+7.0749R for males. From the parameters calculated using average total length and weight when the year ring was formed, the growth of D. berycoides was expressed by von Bertalanffy growth equations as <TEX>$L_t=34.71(1-e^{-0.2557(t+0.2078)})$</TEX>, <TEX>$W_t=713.85(1-e^{-0.2557(t+0.2078)})^{3.1972}$</TEX> for females, <TEX>$L_t=27.37(1-e^{-0.3388(t+0.7362)})$</TEX>, <TEX>$W_t=353.91(1-e^{-0.3388(t+0.7362)})^{3.1647}$</TEX> for males, and <TEX>$L_t=34.20(1-e^{-0.2530(t+0.2871)})$</TEX>, <TEX>$W_t=674.10(1-e^{-0.2530(t+0.2871)})^{3.1171}$</TEX> for pooled sexes, where L is total length at age t.
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