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| Auteurs principaux: | , , , , |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Toxics
2026
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| Accès en ligne: | https://pubmed.ncbi.nlm.nih.gov/42043166/ |
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| _version_ | 1868266056160641025 |
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| author | Giménez, Valéria Neves, Beatriz Figueira, Etelvina Marques, Paula Pires, Adília |
| author_facet | Giménez, Valéria Neves, Beatriz Figueira, Etelvina Marques, Paula Pires, Adília Giménez, Valéria Neves, Beatriz Figueira, Etelvina Marques, Paula Pires, Adília |
| collection | PubMed - marine biology |
| contents | Assessing the Interactive Effects of Graphene Oxide and Marine Heatwave Stressors on Estuarine Bivalves. Giménez, Valéria Neves, Beatriz Figueira, Etelvina Marques, Paula Pires, Adília Coastal ecosystems are increasingly threatened by climate change, especially the rising frequency of marine heatwaves (MHWs), which often co-occur with emerging nanomaterials such as graphene oxide (GO), whose ecological risks are still being evaluated. While the effects of GO have been studied in isolation, little is known about its interaction with thermal stress events. This research studied the combined effects of temperature (18 °C and 23 °C, simulating control and MHW conditions) and GO nanosheets exposure (0.01 mg/L) on two key estuarine bivalves: the clam and the mussel . After 7 days of exposure (duration of many MHWs), energy metabolism, antioxidant defenses, oxidative damage, and neurotransmission were assessed. The results revealed that clams exhibited lower ETS and SOD activity when exposed to MHWs and lower SOD and AChE activities at MHW + GO, compared to the control treatment. Mussels relied primarily on SOD activity across treatments but showed increased susceptibility to GO nanosheets, with higher LPO levels and a significant reduction in AChE activity when exposed to GO at both temperatures. Overall, our findings suggest that shows a stronger response to the environmental alterations tested than . Combined exposure to GO + MHW triggers species-specific biochemical responses in estuarine bivalves, highlighting how physiological traits shape the assessment of ecological risks posed by nanomaterial pollution under climate change. |
| format | Artículo científico |
| id | pubmed_42043166 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Toxics |
| record_format | pubmed |
| spellingShingle | Assessing the Interactive Effects of Graphene Oxide and Marine Heatwave Stressors on Estuarine Bivalves. Giménez, Valéria Neves, Beatriz Figueira, Etelvina Marques, Paula Pires, Adília Assessing the Interactive Effects of Graphene Oxide and Marine Heatwave Stressors on Estuarine Bivalves. Giménez, Valéria Neves, Beatriz Figueira, Etelvina Marques, Paula Pires, Adília Coastal ecosystems are increasingly threatened by climate change, especially the rising frequency of marine heatwaves (MHWs), which often co-occur with emerging nanomaterials such as graphene oxide (GO), whose ecological risks are still being evaluated. While the effects of GO have been studied in isolation, little is known about its interaction with thermal stress events. This research studied the combined effects of temperature (18 °C and 23 °C, simulating control and MHW conditions) and GO nanosheets exposure (0.01 mg/L) on two key estuarine bivalves: the clam and the mussel . After 7 days of exposure (duration of many MHWs), energy metabolism, antioxidant defenses, oxidative damage, and neurotransmission were assessed. The results revealed that clams exhibited lower ETS and SOD activity when exposed to MHWs and lower SOD and AChE activities at MHW + GO, compared to the control treatment. Mussels relied primarily on SOD activity across treatments but showed increased susceptibility to GO nanosheets, with higher LPO levels and a significant reduction in AChE activity when exposed to GO at both temperatures. Overall, our findings suggest that shows a stronger response to the environmental alterations tested than . Combined exposure to GO + MHW triggers species-specific biochemical responses in estuarine bivalves, highlighting how physiological traits shape the assessment of ecological risks posed by nanomaterial pollution under climate change. |
| title | Assessing the Interactive Effects of Graphene Oxide and Marine Heatwave Stressors on Estuarine Bivalves. |
| url | https://pubmed.ncbi.nlm.nih.gov/42043166/ |