AI Article Synopsis
- PAHs are toxic pollutants found globally that significantly affect the marine environment, particularly crustaceans like Artemia franciscana.
- Short-term exposure (48 hours) to various PAH mixtures revealed generally additive or synergistic toxic effects, with some combinations exhibiting unique interactions, such as naphthalene with phenanthrene showing a high combination index.
- Gene expression analysis indicated that PAH exposure impacted critical stress-response genes in Artemia, emphasizing the need for more research on the effects of PAHs on marine life given their potential accumulation in these organisms.
Article Abstract
Polycyclic aromatic hydrocarbons (PAHs) are widespread across the globe and can be highly toxic for the marine environment. This research investigated the short-term (48 h of exposure) effects of PAHs mixtures on the nauplii and adult of crustacean Artemia franciscana considering the impact in term of toxicity and changes in gene expression. Results showed that all combinations caused additive or synergic effects with the exception of naphthalene + phenanthrene (NAP + PHE; Combination Index (CI) = 22.3), while naphthalene + benzo(k)fluoranthene (NAP + BkF; CI = 7.8) mixture evidenced an antagonistic effect. Real-time qPCR showed that all mixtures impacted the expression level of the five known genes involved in Artemia stress response. The effects of PAHs at environmental concentrations on both adult and nauplii suggested the need for further investigations about the impact of such contaminants on the marine biota considering that crustaceans can accumulate PAHs at concentrations comparable to those assessed in the present study.
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| http://dx.doi.org/10.1016/j.envpol.2023.122286 | DOI Listing |
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