Metalliferous atmospheric settleable particulate matter action on the fat snook fish (Centropomus parallelus): Metal bioaccumulation, antioxidant responses and histological changes in gills, hepatopancreas and kidneys.

Author(s)

Monteiro, Rafaella ; Souza, Iara da Costa ; Morozesk, Mariana ; Soares, Michelly Pereira ; Angelis, Carolina Fernandes De ; Vieira, Nathan S. ; Bendhack, Fabiano ; Monferran, Magdalena Victoria ; Wunderlin, Daniel Alberto ; Fernandes, Marisa Narciso

• Document type: Journal article
• Source: Chemosphere; v. 330, p. 12-pg., 2023-04-27.

Abstract

Metallic smoke released by steel industries is constitute by a mixture of fine and gross particles containing metals, including the emerging ones, which sedimentation contaminates soil and aquatic ecosystems and put in risk the resident biota. This study determined the metal/metalloids in the atmospheric settleable particulate matter (SePM, particles >10 mu m) from a metallurgical industrial area and evaluated metal bioconcentration, antioxidant responses, oxidative stress, and the histopathology in the gills, hepatopancreas and kidneys of fat snook fish (Centropomus parallelus) exposed to different concentrations of SePM (0.0, 0.01, 0.1 and 1.0 g L-1), for 96 h. From the 27 metals (Al, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ag, Cd, Sn, Ba, La, Ce, W, Hg, Pb, Bi) analyzed, 18 were quantified in SePM and dissolved in seawater. Metal bioconcentrations differed among organs; Fe and Zn were the metals most bioconcentrated in all organs, Fe was higher in hepatopancreas and Zn > Fe > Sr > Al was higher in kidneys. The activity of superoxide dismutase (SOD) decreased in the gills; SOD, catalase (CAT) decreased, and glutathione peroxidase (GPx) increased in hepatopancreas and, CAT, glutathione-S-transferase (GST) and the level of glutathione (GSH) increased in kidneys. The unchanged levels of lipid peroxidation and oxidized protein in any organ indicate that the antioxidant responses were efficient to avoid oxidative stress. Organ lesion indices were higher in the gills > kidneys > hepatopancreas, being higher in fish exposed to 0.01 g L-1 SePM. All changes indicate a tissue-specific metal/metalloids bioconcentration, antioxi-dant and morphological responses that all together compromise fish health. Regulatory normative are needed to control the emission of these metalliferous PM to preserve the environment and biota. (AU)

• FAPESP's process: 19/08491-0 - Atmospheric particulate material and environmental contamination. Impact assessment in the aquatic biota in an integrated ecophysiotoxicological approach
• Grantee: Marisa Narciso Fernandes
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 21/02906-3 - Plasticity, distribution and dynamics of ionocytes and cardiomyocytes: physiological mechanisms and adjustments to environmental contamination in different aquatic environments
• Grantee: Mariana Morozesk
• Support Opportunities: Scholarships in Brazil - Post-Doctoral