화합물안정동위원소 분석법을 활용한 낙동강 이입종 강준치 Chanodichthys erythropterus의 영양단계 해석

원은지; 조하은; 김도균; 최지웅; 안광국; 신경훈

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화합물안정동위원소 분석법을 활용한 낙동강 이입종 강준치 Chanodichthys erythropterus의 영양단계 해석 KCI 등재

Interpretation of Trophic Positions Using the CSIA Approach: Focusing on the Invasive Fish Lake Skygazer Chanodichthys erythropterus

원은지, 조하은, 김도균, 최지웅, 안광국, 신경훈

언어KOR
URLhttps://db.koreascholar.com/Article/Detail/427721

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생태와 환경 (Korean Journal of Ecology and Environment)

Vol. 56 No. 3 (2023.09)
pp.218-228

한국수생태학회(구 한국하천호수학회) (Korean Society of Limnology)

초록

Invasive predators are one of the most damaging species groups to biodiversity. In the Nakdong River, the lake skygazer Chanodichthys erythropterus is a dominant species that is fiercely carnivorous and a concern for commercial fish. Although it is important to understand the ecological characteristics related to the feeding habit, studies on the diets of lake skygazer in Nakdong River have been limited to studies of gut contents. In this study, the trophic position (TP) and feeding habits of C. erythropterus were studied by calculating TPs using samples collected from 13 sites throughout the Nakdong River. Compound-specific isotopic analysis of amino acids provided reliable TPs from the muscle of Lake skygazer C. erythropterus without any isotope baseline. The results were approximately 3 to 3.6 and suggesting a carnivorous but size-dependent prey variation. In particular, the TP variability of C. erythropterus observed in the Nakdong River showed that it had a selective feeding habit compared to carnivorous fish species of relatively similar trophic levels.

키워드

invasive species compound specific isotopes analysis (CSIA)amino acids trophic amino acids source amino acids

서 론
재료 및 방 법
    1. 조사지점
    2. 어류 시료 채집 및 보관
    3. 정점별 공서 우점종 및 먹이 후보종의 우점도
    4. 안정동위원소비 분석
    5. 영양단계 (Trophic position, TP) 산출
    6. 통계분석
결과 및 고 찰
    1. 낙동강 서식 강준치의 안정동위원소비와 영양단계
    2. 크기에 따른 영양단계 (TP)의 변화
    3. 강준치의 먹이 선택성
결 론
적 요
사 사

저자

원은지(한양대학교 해양대기과학연구소, 한양대학교 해양융합과학과) | Eun-Ji Won (Institute of Ocean and Atmospheric Sciences (IOAS), Hanyang University, Ansan 15588, Republic of Korea; Department of Marine Science and Convergent Technology, Hanyang University, Ansan 15588, Republic of Korea)
조하은(한양대학교 해양융합과학과) | Ha-Eun Cho (Department of Marine Science and Convergent Technology, Hanyang University, Ansan 15588, Republic of Korea)
김도균(한양대학교 해양융합과학과) | Dokyun Kim (Department of Marine Science and Convergent Technology, Hanyang University, Ansan 15588, Republic of Korea)
최지웅((주)다온에코) | Ji-Woong Choi (Daon Eco. Co., Ltd., Sejong 30081, Republic of Korea)
안광국(충남대학교 생명과학과) | Kwang-Guk An (Department of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Republic of Korea)
신경훈(한양대학교 해양대기과학연구소, 한양대학교 해양융합과학과) | Kyung- Hoon Shin (Institute of Ocean and Atmospheric Sciences (IOAS), Hanyang University, Ansan 15588, Republic of Korea; Department of Marine Science and Convergent Technology, Hanyang University, Ansan 15588, Republic of Korea) Corresponding author

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