GAO Yong-wen1,LU An-huai 2,WANG Qing-yin3,ZHANG Hui-qin2
1.Makah Fisheries Management,WA 98357,USA;
2.School of Earth and Space Sciences, Beijing100871,China;
3.Yellow Sea Fisheries Research Institute,Qingdao 266071,China
Abstract: Identification of fish stocks is one of the most important tasks in fisheries science and management. In this paper,we illustrate the effect and application of stable oxygen and carbon isotopic composition of otoliths and the correlation of δ18O versus δ13C in identification of marine and anadromous fish stocks. Otoliths are aragonitic carbonate structures found in the inner ear of teleost fish and display rhythmic growth patterns. Compared with genetic methods in fish stock identification,stable oxygen and carbon isotope analyses have two distinct advantages in determining (1) a time series from the otolith microstructure to separation of the different life stages of marine and anadromous fish; and (2) the oceanographic and environmental conditions to which the fish were exposed. Thus, the isotopic signatures of otoliths and the correlation of δ18O versus δ13C play a new and important role in identification of fish stocks.
Key words: otoliths; stable isotopic signatures;δ18O versus δ13C; marine and anadromous fish
*Corresponding Author, E-Mail: ahlu@pku.edu.cn
Bulletin of Mineralogy, Petrology and Geochemistry Vol. 30, No.3, 2011, page 270-276
(Source from http://www.cnki.com.cn/)
