Metabolic Effects in the BivalvePerna pernaandMytilus galloprovincialis: Impact on the Environment due to Contamination by Copper

Abstract

This work presents the study of the effects of acute exposure to various concentrations of copper from 0.03 to 0.59 mol⋅L −1 on the metabolic activities (nitrogen and phosphorus), protein levels, catalase (CAT) enzyme activities, and the biological response malondialdehyde (MDA) in the mollusks Perna perna and Mytilus galloprovincialis. The concentrations above 0.88 mol⋅L −1 have proven to be lethal to P. perna. The results show slight disturbances of metabolism as a result of pollutant and a significant correlation between metal contamination and ammonia nitrogen levels, resulting in an increase in the latter after 48 h of M. galloprovincialis exposure to 0.59 mol⋅L −1 of copper concentrations. CAT was rapidly induced even by low concentrations of copper; MDA was increased only with low concentrations of copper in P. perna.

First report on the toxicity of copper and zinc on the Afrotropical whirligig beetle, Orectogyrus alluaudi (Coleoptera: Gyrinidae): Effect on survival and oxidative stress

“…Similar to our ndings, MDA concentration increases in the marine bivalve, Perna perna, only at low Cu concentration (Errahmani et al, 2014). The cellular stress of Cu is often apparent at low doses because of the reduced lysosomal stability in the exposed organisms (Svendsen and Weeks, 1997;Viarengo et al, 2000).…”

Remediation of arsenic from contaminated seawater using manganese spinel ferrite nanoparticles: Ecotoxicological evaluation in Mytilus galloprovincialis

“…The decrease of mussels' metabolism may be related to the capacity of bivalves to close their valves and reduce their filtration and respiration rates when exposed to contaminants (Gosling, 2003;Ortmann and Grieshaber, 2003). Previous studies also demonstrated that metals and metalloids even at lower exposure concentrations induced similar metabolic depression in bivalves (Errahmani et al, 2014;Liu et al, 2012;Velez et al, 2017). The present results also demonstrated that mussels exposed to As 1000 µg/L contaminated seawater strongly increased their antioxidant defences, which may result from the overproduction of reactive oxygen species due to the stress induced by As, which were efficient in limiting the occurrence of LPO.…”

Evaluation of Functionality and Biological Responses of Mytilus galloprovincialis after Exposure to Quaternium-15 (Methenamine 3-Chloroallylochloride)

“…In fact, temperature strongly influences the respiration rates (direct relation), the excretion rates (above 25 °C) and salinity is proved to have a strong influence on clearance rates, which are inhibited at low salinities [22,23]. Results of other studies of pH effects in bivalve molluscs showed that some deleterious effects set in at pH values around 7.5, and all studies show that marine bivalve molluscs cannot tolerate pH values ≤ 7.0 [24,25,26,27].…”

“…During the experimental period, temperature, pH and salinity have been constantly monitored in all the tanks to assess the quality of the waters and to evaluate the possible influence of environmental parameters on the physiology of organisms [23,49]. All parameters have been measured with a multiparametric probe YSI 85 System (YSI Incorporated,Yellow Spring, OH, USA) and a HI 83140 pH-meter (HANNA Instrument, Padova, Italy).…”