Age and growth of chum salmon from the Tumen River.

ABSTRACT: To investigate the age structure and growth characteristics of the chum salmon (Oncorhynchus keta) population in the Tumen River, this study conducted age determination and measured basic biological indicators including fork length (FL) and body weight (BW) for 331 specimens collected between 2020 and 2023. Results revealed that the spawning population comprised four age groups (2⁺, 3⁺, 4⁺, and 5⁺), dominated by age-2⁺ and age-3⁺ individuals (96.37% of the total). FL ranged from 51.0 to 74.6 cm and BW ranged from 1,400 to 5,200 g. The relationship between BW and FL was expressed as: BW = 0.0159×FL^2.8969, indicating isometric growth. Von Bertalanffy growth equations (VBGF) were applied to examine growth patt

SUBMITTER: Wang A 

PROVIDER: S-EPMC12399085 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature