kfas

SEARCH FOR ARTICLE

kfas, vol. 58, no. 5, pp.540-550, November, 2025 DOI. https://doi.org/10.5657/KFAS.2025.0540

Coastal Distribution and Movement of Juvenile Chum Salmon Oncorhynchus keta Released in Namdaecheon, Gangwon-do, Korea

김두호·김주경¹·최종국·윤병선²·오승용^3*
한국수산자원공단 동해생명센터, ¹한국수산자원공단 남해생명센터, ²다한생태연구소, ³한국해양과학기술원 해양생명자원연구부

ABSTRACT

To analyze the distribution and migration patterns of chum salmon fry, survey was conducted four times from March to April 2020 using a surface water pair trawl in the coastal waters of Gangwon Province. The number of fry per unit area of chum salmon fry averaged 2,302 Inds./km2 (1,625 to 2,984 Inds./km2). The number of fry per unit area, total length and condition factor of caught fry under water temperatures above 12°C significantly increased compared to those under below 12°C (P<0.05). Analysis of the otolith markers showed that fry released in Namdaecheon and Wangpicheon moved north along the coast and were captured off the coast of Sokcho. The results of this study provide key information on the initial coastal recruitment, distribution, migration, and biological indicators of chum salmon fry released in the Namdaecheon area, and can be used to determine the timing of salmon release in the area.
Keyword

Chum salmon fry, Distribution characteristic, Migration, Otolith patterns