X-ray intensity map of strontium (Sr) content and strontium:calcium (Sr:Ca) ratios fluctuation in Larimichthys polyactis otolith. X-ray intensity map of the Sr content in Larimichthys polyactis otoliths collected in 2012 from the southern Yellow Sea (left). This pattern is representative of with overall low Sr levels (greenish and yellowish color), except for higher Sr contents in the core (reddish color). Mean Sr:Ca ratios fluctuated (with positive SD values) along the transect from the core (0 μm) to the edge of otoliths (right). The figure in 2012 has been referenced from Xiong et al. (2014). The dashed line represents the boundary between the high and low Sr phases; the high phases are on the left and the low phases are on the right.

  Part of: Xiong Y, Yang J, Jiang T, Liu H, Zhong X (2021) Temporal stability in the otolith Sr:Ca ratio of the yellow croaker, Larimichthys polyactis (Actinopterygii, Perciformes, Sciaenidae), from the southern Yellow Sea. Acta Ichthyologica et Piscatoria 51(1): 59-65. https://doi.org/10.3897/aiep.51.63245