화합물안정동위원소 분석법을 활용한 낙동강 이입종 강준치 Chanodichthys erythropterus의 영양단계 해석
- Title
- 화합물안정동위원소 분석법을 활용한 낙동강 이입종 강준치 Chanodichthys erythropterus의 영양단계 해석
- Other Titles
- Interpretation of Trophic Positions Using the CSIA Approach: Focusing on the Invasive Fish Lake Skygazer Chanodichthys erythropterus
- Author
- 신경훈
- Keywords
- invasive species; compound specific isotopes analysis (CSIA); amino acids; trophic amino acids; source amino acids
- Issue Date
- 2023-09
- Publisher
- 한국하천호수학회
- Citation
- 생태와 환경(KJEE), v. 56, no 3, page. 218-228
- Abstract
- 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.
- URI
- https://kiss.kstudy.com/Detail/Ar?key=4049213https://repository.hanyang.ac.kr/handle/20.500.11754/190600
- ISSN
- 2288-1115; 2288-1123
- DOI
- https://doi.org/10.11614/KSL.2023.56.3.218
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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