A multibiomarker approach to assess the ecotoxicological effects of diclofenac on Asian clam Corbicula fluminea (O. F. Müller, 1774).

Diclofenac (DCF), one of the most current and widely used nonsteroidal anti-inflammatory drugs (NSAIDs), has been frequently detected in aquatic environments worldwide. However, the ecotoxicological effects of DCF on freshwater invertebrates remain largely unknown. In the present study, Corbicula fluminea were exposed to environmentally relevant concentrations of DCF (0, 2, 20, and 200 μg/L) for 28 days, and the potential adverse effects of DCF on siphoning behavior, antioxidant responses, and apoptosis were investigated.

Response of Juvenile to the Combined Stressors of Elevated pCO and Excess Copper.

Coastal macroalgae may be subjected to global and local environmental stressors, such as ocean acidification and heavy-metal pollution. We investigated the growth, photosynthetic characteristics, and biochemical compositions of juvenile sporophytes of cultivated at two pCO levels (400 and 1000 ppmv) and four copper concentrations (natural seawater, control; 0.2 μM, low level; 0.

Decreased Salinity Offsets the Stimulation of Elevated pCO on Photosynthesis and Synergistically Inhibits the Growth of Juvenile Sporophyte of (Laminariaceae, Phaeophyta).

The combined effect of elevated pCO (Partial Pressure of Carbon Dioxide) and decreased salinity, which is mainly caused by freshwater input, on the growth and physiological traits of algae has been poorly assessed. In order to investigate their individual and interactive effects on the development of commercially farmed algae, the juvenile sporophytes of were cultivated under different levels of salinity (30, 25 and 20 psu) and pCO (400 and 1000 µatm). Individually, decreased salinity significantly reduced the growth rate and pigments of , indicating that the alga was low-salinity stressed.

Effects of elevated pCO and nutrient enrichment on the growth, photosynthesis, and biochemical compositions of the brown alga (Laminariaceae, Phaeophyta).

Ocean acidification and eutrophication are two major environmental issues affecting kelp mariculture. In this study, the growth, photosynthesis, and biochemical compositions of adult sporophytes of were evaluated at different levels of pCO (400 and 800 µatm) and nutrients (nutrient-enriched and non-enriched seawater). The relative growth rate (RGR), net photosynthetic rate, and all tested biochemical contents (including chlorophyll (Chl) , Chl , soluble carbohydrates, and soluble proteins) were significantly lower at 800 µatm than at 400 µatm pCO.