Reconstructing habitat use of Coilia mystus and Coilia ectenes of the Yangtze River estuary, and of Coilia ectenes of Taihu Lake, based on otolith strontium and calcium
Abstract:The habitat use and migratory patterns of Osbeck’s grenadier anchovy Coilia mystus in the Yangtze estuary and the estuarine tapertail anchovy Coilia ectenes from the Yangtze estuary and Taihu Lake, China, were studied by examining the environmental signatures of strontium and calcium in their otoliths using electron probe microanalysis. The results indicated that Taihu C. ectenes utilizes only freshwater habitats, whereas the habitat use patterns of Yangtze C. ectenes and C. mystus were much more flexible, apparently varying among fresh, brackish and marine areas. The present study suggests that the spawning populations of Yangtze C. ectenes and C. mystus in the Yangtze estuary consist of individuals with different migration histories, and individuals of these two Yangtze Coilia species seem to use a variety of different habitats during the non-spawning seasons.
Document Type: Regular Paper
Affiliations: 1: International Coastal Research Center, Ocean Research Institute, the University of Tokyo, Iwate 028-1102 Japan 2: Key Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China, 3: Center for International Cooperation, Ocean Research Institute, the University of Tokyo, Tokyo 164-8639, Japan and
Publication date: October 1, 2006