Quantitative reconstruction of salinity history by otolith oxygen stable isotopes: An example of a euryhaline fish Lateolabrax japonicus
Journal
Rapid Communications in Mass Spectrometry
Journal Volume
33
Journal Issue
16
Pages
1344-1354
Date Issued
2019
Author(s)
Abstract
RATIONALE: Otolith strontium:calcium (Sr:Ca) ratios have been extensively used to study fish migration across a river, estuary and ocean at each life stage. However, otolith Sr:Ca ratios only explain partial variations in salinity and quantitative reconstruction of salinity history of fishes remains a challenge. Using a euryhaline fish Lateolabrax japonicus as an example, this study demonstrated an isotopic method of quantitatively reconstructing the salinity histories and habitat uses of the fish. METHODS: O value, which was then converted into salinity using published linear equations or an equation that was newly generated for this study. RESULTS: profiles; however, otolith Sr:Ca ratios can only reveal freshwater residence and cannot distinguish residence in brackish water or seawater. CONCLUSIONS: values are well-suited approaches for quantitative reconstruction of salinity histories of the fish. This method can improve the understanding of the habitat uses of other fishes inhabiting diverse habitats among the rivers, estuaries and oceans.
Type
journal article