Copper sulphate impact on the antioxidant defence system of the marine bivalves Cerastoderma edule and Scrobicularia plana

Abstract

Anthropogenic activities, such as agriculture and industrial activities, are a main source of pollution contributing for the degradation of water quality and thus affecting the living organisms of aquatic systems. Copper is widely used at these practices being often released into the aquatic systems and may cause negative effects in its communities. This study proposes to determine the effects of copper in the antioxidant defence system of two size classes (big and small sizes) of Scrobicularia plana and Cerastoderma edule, two marine bivalve species with commercial interest. It was observed the behaviour activity of the organisms during the exposure to copper sulphate (CS) and was determined the enzymatic activities of glutathione-S-transferases (GST), glutathione reductase (GR) and glutathione peroxidase (GPx) (both selenium-dependent (SeGPx) and total (tGPx)) in the muscle tissue (foot). Lipid peroxidation (LPO) was evaluated through thiobarbituric acid reactive substances (TBARS) measurement in the foot. Changes in the behaviour and enzymatic activity were observed. Lipid peroxidation was observed at C. edule and S. plana big and small size classes, respectively, according to TBARS levels. The foot showed to be a good tissue to be used in biochemical analysis to detect the presence of toxicants.

Effects of Carbon Nanoparticles and Chromium Combined Exposure in Native (Ruditapes decussatus) and Invasive (Ruditapes philippinarum) Clams

“…In fact, under these conditions, no LPO was observed. Similarly, Mesquita et al [ 68 ] observed the enhancement of antioxidant defenses in the bivalves Cerastoderma edule and Scrobicularia plana when exposed to Cu. However, in this case, the antioxidant process was not effective, with the occurrence of increased LPO levels.…”

Histopathological alterations in the gonads of wild white clams Dosinia ponderosa inhabiting a former copper mine locality in the Gulf of California

“…Additionally, Cu can induce lipid peroxidation, cause DNA damage, and alter hormone modulation and can even lead to cell death (Gaetke and Chow 2003). Many of these effects have been reported in bivalve mollusks (Mesquita et al 2019; Weng and Wang 2019). Therefore, it is reasonable to suggest a relationship between the presence of Cu in white clam tissues and the histopathological alterations observed in the present study; hence, the reproductive deterioration of white clams at SR can be attributed to mining pollution at this site.…”

Untargeted Metabolomics Reveals a Complex Impact on Different Metabolic Pathways in Scallop Mimachlamys varia (Linnaeus, 1758) after Short-Term Exposure to Copper at Environmental Dose

“…In a pre-test study, high mortality in scallops was observed after 72 h of exposure to copper at the same concentration (82 µg/L, maximal concentration measured in study site), while the controls were still alive (personal observation). Thus, to study the effects of copper (82 µg/L) on the metabolism of scallops one day before lethal effects occur, we chose an exposure time of 48 h. This choice is reinforced by a study showing that copper can have lethal effects in some bivalve species after 48 h of exposure to lower concentrations than in the present study [79].…”