Assessing the Effect of Contaminated and Restored Marine Sediments in Different Experimental Mesocosms Using an Integrated Approach and Mytilus Galloprovincialis As a Model

Overview

Journal Mar Biotechnol (NY)

Specialties Biology
Biotechnology

Date 2020 Apr 3

PMID 32240431

Authors

Stefania Ancora

Federica Rossi

Marina Borgese

Cristina Pirrone

Ilaria Caliani

Simone Cappello

Giuseppe Mancini

Nicola Bianchi

Claudio Leonzio

Giovanni Bernardini

Rosalba Gornati

Affiliations

Soon will be listed here.

Abstract

The research presented here was conducted to ascertain the effectiveness of recovery technologies in remediating a compromised marine environment. The multidisciplinary approach aims to integrate traditional chemical-physical analysis and to assess the biological parameters of Mytilus galloprovincialis within different experimental mesocosms (W, G, and B). In particular, this system was designed to reproduce sediment resuspension in a marine environment, which is thought to be one cause of contaminant release. The study combined morphological and ultrastructural observations with DNA damage assessment and mRNA expression of those genes involved in cellular stress responses. The tissues of mussels maintained in the polluted mesocosm showed a higher accumulation of Pb and Hg than in those maintained in restored mesocosm. This observation correlates well with mRNA expression of MT10 and data on DNA damage. The outcome of the biological evaluation consolidates the chemical characterization and supports the concept that the remediation method should be evaluated at an early stage, both to analytically determine the reduction of toxic components and to assess its ultimate impact on the biological system.

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