Otolith Sr/Ca ratio complements Sr isotopes to reveal fish migration in large basins with heterogeneous geochemical landscapes
نویسندگان
چکیده
The potential use of Sr/Ca and Ba/Ca ratios in fish otolith, as a complement to 87Sr/86Sr study movements Prochilodus lineatus, was evaluated the La Plata Basin (South America). Water were obtained from samples collected during high low water seasons at 42 sites across Basin. Elemental isotopic measured by MC-ICP-MS, ICP-MS ion chromatography, available literature. Fish caught six different with physiochemical features. Otolith core-to-edge profiles determined LA-ICP-MS, while otolith data set taken predictive classification rivers according Sr/Ca, (92.5%) higher than that based solely on (58%), reached 100% for several rivers. Unlike Ba/Ca, significant relationship (R2 = 0.94, p < 0.05) found between edge suggesting this could be an efficient movement indicator P. lineatus. ratio complemented information provided Sr isotopes it particularly useful northwest basin, where alone do not allow differentiating large
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ژورنال
عنوان ژورنال: Environmental Biology of Fishes
سال: 2021
ISSN: ['1573-5133', '0378-1909']
DOI: https://doi.org/10.1007/s10641-021-01074-y