Mercury distribution in the estuarine fauna of the Jaguaribe river - CE
DOI:
https://doi.org/10.32360/acmar.v51i1.32972Keywords:
Estuary. Mercury. Bioaccumulation. Feeding Habit.Abstract
Modifications in the natural landscape of the Lower Jaguaribe River Basin, associated with global climate changes, contribute to changes in the hydrodynamics of the Lower Basin of Jaguaribe river ecosystem, increasing contaminants bioavailability, among them mercury (Hg). Concentrations of Hg measured in the estuarine fauna (13 species of bonyfish and 5 of invertebrates) showed variations in Hg concentrations related to feeding habits. Highest concentrations in both, invertebrates and fish, were found in carnivorous species. However, no significant differences were found between the mean Hg concentrations in carnivores and omnivores fishes, and between carnivorous and filter feeders invertebrates, which may be related to intrinsic characteristics such as size, sexual maturity and diet composition.
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