한국 남해에 분포하는 갯장어(Muraenesox cinereus)의 연령과 성장

The age and growth of Muraenesox cinereus collected in the South Sea of Korea by Danish seine and coastal Longline fisheries were determined from right sagittal otoliths between May 2018 and April 2019. Otoliths of 353 fish were observed under reflected light, and the edges of the opaque zone were considered to be the otolith ring. Monthly changes in the marginal index indicated that rings (opaque zones) were formed once a year from June to July. The estimated von Bertalanffy growth equation with growth parameters estimated from non-linear regression were Lt=138.37 (1-e-0.18(t +0.79)) for females and Lt=99.00 (1-e-0.13(t +3.99)) for males. The oldest female M. cinereus was 12 years old, and the oldest male was 8 years old.