이석 분석에 의한 연어의 서식환경과 계군 구분

Title
이석 분석에 의한 연어의 서식환경과 계군 구분
Alternative Title
Identification of stocks and Environmental characteristics of North Pacific chum salmon by chemical analysis of otolith
Author(s)
강수경; 김수암; Kevin Telmer; David Wech; John Helle; 이윤호; kazuya Nagasawa
KIOST Author(s)
Lee, Youn Ho(이윤호)
Publication Year
2004-09-01
Abstract
Since Reibisch's observations in 1899, otoliths have been used to identify the age and daily rings of fish. However, the relatively sudden development of otolith elemental analyses appeared in the 1980s. The advent of otolith chemistry expanded and applications of otoliths to environmental recorders. Elemental composition analyses called elemental tags or fingerprints, of the fish otoliths have been applied to study age, growth, stock identification, temperature and salinity histories, migration pathways, anadromy, pollution of habitat, and chemical mass marking. To investigate the stock identification and habitate characteristics of chum salmon (Oncorhynchus keta) in the North Pacific Ocean, the stable isotopes O, C and trace elements in otoliths were measured. Otoliths were collected from four sites 9canada, Japan, Korea and Usa) during 1997-1999 spawning seasons except japanese salmon inn1999. The values of the two isotopes of adult salmon separated largely into two groups: Asian and North American chum salmon. From the trace element analysis, we suggest that chum salmon might move onshore/offshore or north/south during its growing stage. The result of discriminant analysis with 23 elements represents distinct separation in accordance with natal areas of stocks. Therefore, otolith chemistry is a very effective technique for stock separation and for revealing the effects of environment of salmon populations.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41240
Bibliographic Citation
NPAFC technical report 5, pp.37 - 38, 2004
Publisher
North Pacific Anadromous Fish Commission
Type
Conference
Language
English
Publisher
North Pacific Anadromous Fish Commission
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