소양강에 분포하는 생태계교란어종 브라운송어(Salmo trutta)의 성장도 및 비만도 분석

초록

This study examined the habitat and settlement patterns of Brown Trout (Salmo trutta), designated as an ecosystem-disrupting species in 2022. A total of 348 individuals were captured from the Soyang River area in Chuncheon, Gangwon do, South Korea, which is a domestic habitat of Brown Trout. Monthly surveys were conducted from May 2022 to May 2023. Age structure analysis revealed that individuals with sizes ranging from 10 to 50 mm were classified as age 0 (0+), 40 to 90 mm as age 1, and 70 to 160 mm as age 2. The length–weight relationship did not exceed 3.00 in October and November 2022 and April 2023. The condition factor showed temporary poor growth, with negative (-) values in June, October, and November 2022 and April 2023. However, the overall length-weight relationship was 3.03, and the condition factor was positive (+), indicating good growth.

키워드