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kfas, vol. 57, no. 4, pp.380-388, August, 2024 DOI. https://doi.org/10.5657/KFAS.2024.0380

Sexual Maturation of the Marbled Flounder Pseudopleuronectes yokohamae off the Coastal Waters of Pohang in the East Sea, Korea

최해영·정경미1·박정호2·문성용·성기창3·백근욱4*
국립수산과학원 남해수산연구소, 1국립수산과학원 연근해자원과, 2국립수산과학원 원양자원과, 3국립수산과학원 동해수산연구소, 4경상국립대학교 해양과학대학 해양생명과학과

ABSTRACT

This study investigated the sexual maturation of the marbled flounder Pseudopleuronectes yokohamae, a commercially important flatfish species, through monthly sampling from the coastal waters of Pohang in the East Sea of Korea in 2022. We analyzed monthly changes in total length (TL), gonadosomatic index, maturity stage, and 50%, 75%, and 97.5% group maturity based on visual assessments and histological analysis of the gonads. The spawning period was determined to be from December to May. The TL at 50% maturity was 26.4 cm for females and 24.8 cm for males. These findings provide a basis for developing resource management strategies for Pleuronectidae.
Keyword

East Sea, marbled flounder, Pseudopleuronectes yokohamae, sexual maturation