Researching and estimating the ecological characteristics of target fish species is crucial for fisheries resource management. The results of these estimates significantly influence stock assessments and management reference points such as size limit and closed seasons. Recently, ecological characteristics have been changing due to overfishing, climate change, and marine pollution, making continuous estimation and monitoring essential. This study analyzed the ecological changes in small yellow croaker (Larimichthys polyactis) resources in Korea over 24 years (2000-2023) using biological data (growth and gonad traits). By estimating the annual length-weight relationship and length at maturity (L50 and L95), we interpreted the numerical trends of early maturation due to resource depletion. The parameter b of the length-weight relationship, indicating the nutritional status of the resources, showed a slight increase over the years, suggesting relatively good nutritional status (b > 3.0) during most periods. Trend analysis between length at maturity and biomass indicated that as biomass decreased, maturity length also decreased.

서 론
재료 및 방법
    사용자료
    체장-체중 관계식
    성숙체장
    자원량 추정
결과 및 고찰
결 론
사 사
References

• 김무진(국립수산과학원 연근해자원과 연구원) | Moo-Jin KIM (Researcher, Division of Coastal Water Fisheries Resources Research Division, National Fisheries Research and Development Institute, Busan 46083, Korea)
• 강희중(국립수산과학원 연근해자원과 연구원) | Heejoong KANG (Researcher, Division of Coastal Water Fisheries Resources Research Division, National Fisheries Research and Development Institute, Busan 46083, Korea) Corresponding author
• 윤상철(국립수산과학원 연근해자원과 연구원) | Sang Chul YOON (Researcher, Division of Coastal Water Fisheries Resources Research Division, National Fisheries Research and Development Institute, Busan 46083, Korea)