4.7 Article

Morphological and functional alterations in hemocytes of Mytilus galloprovincialis exposed in high-impact anthropogenic sites

Journal

MARINE ENVIRONMENTAL RESEARCH
Volume 188, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2023.105988

Keywords

Morphological alterations; Hemocytes; Mytilus galloprovincialis; Biomonitoring; Environmental chemical stress

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The study aims to investigate the induction of morphological alterations in M. galloprovincialis in coastal marine environments and its integration into a cell-based multimarker approach for detecting stress induced by pollution. The study utilized lysosomal membrane destabilization, micronuclei, and binucleated cells frequencies as biomarkers to assess the pollution impact.
The work aimed to study the induction of morphological alterations in M. galloprovincialis in the field and its suitability to be integrated into a sensitive, simple, and cost-effective cell-based multimarker approach for the detection of the stress status induced by pollution in coastal marine environments in view of ecotoxicological biomonitoring and assessment application. Cellular morphometric alterations was paralleled by the analysis of standardized biomarkers such as lysosomal membrane destabilization, and genotoxocity biomarkers such as micronuclei and binuclated cells frequencies were investigated. The study was carried out by means of a transplanting experiment in the field, using caged organisms from an initial population exposed in the field in two multi-impacted coastal sites of the central Mediterranean area, Bagnoli in the eastern Tyrrhenian Sea and Augusta-Melilli-Priolo in the western Ionian Sea. Capo Miseno (NA) for the Tyrrhenian area and Brucoli (ME) for the Ionian area were chosen as control sites.Hemocyte enlargement and filopodial elongation increased frequencies were observed in organisms exposed to the impacted sites. These morphometric alterations showed strong agreement with the lysosomal membrane destabilization and biomarkers of genotoxicity, suggesting their usefulness in detecting the pollutant-induced stress syndrome related to genotoxic damage.

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