Impact of multiple-factors on health and infections in marine mussels (Perumytilus purpuratus) inhabiting contaminated sites in the Humboldt Current System
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Fecha
2025
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Editorial
Nature Portfolio
Resumen
Marine organisms are increasingly exposed to a combination of environmental stressors. However,
most studies focus on single factors, limiting our understanding of real-world ecological challenges.
This study investigates the combined effects of metal pollution, parasites, pathogens, and
environmental variables on the health of Perumytilus purpuratus, a mussel species inhabiting the
coast of northern Chile. The upwelling system in this area, combined with low water turnover,
creates a unique environment in which to study how multiple factors interact. Mussels were sampled
from several sites affected by metal discharges. Analyses revealed that individuals from central and
northern sites exhibited the highest levels of parasites, pathogens, and tissue lesions. These health
impacts were strongly associated with elevated pH, salinity, cadmium and copper concentrations in
the water. Findings emphasise the synergistic effects of chemical and abiotic factors, underscoring
the importance of incorporating multiple factors interactions into monitoring programmes. Such an
approach can enhance predictions of ecological responses, inform conservation efforts, and guide
policies addressing global challenges like aquatic pollution. Our study provides critical insights into
how combined factors threaten aquatic ecosystems, offering a framework for more comprehensive
environmental assessment.
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Palabras clave
Bivalve molluscs, Humboldt Current System, Synergistic effects, Histopathology, Immune system, Marine ecotoxicology