An integrative biomarker approach to assess the environmental stress in the north coast of Shandong Peninsula using native oysters, Crassostrea gigas

Abstract

An integrative biomarker approach was employed to evaluate the environmental quality of the north coast of Shandong Peninsula along the southern Bohai Sea of China, where pollution is an imminent threat due to rapid urbanization and industrialization. A battery of biomarkers and the metal bioaccumulation in tissues of native oyster Crassostrea gigas were measured under field conditions. Integrative biomarker index (IBR) and metal body burden were calculated to differentiate the pollution status of seven sampling sites. According to our results, Xinzhuang (XZ) site was the most severely contaminated, with the highest IBR value of 3.58, while the lowest IBR value (0.04) was obtained at Penglai (PL). Such an integrated biomarker approach was proved as a useful method for environmental quality assessment in the study area.

The effect of biofloc and clear water at low and high salinity concentration on growth performance and antioxidant response of wild juveniles of Atlantic white shrimp Penaeus setiferus

“…Nine biomarkers (SOD-M, SOD-HP, CAT-M, CAT-HP, GST-M, LPO-M, LPO-HP, PO-M, PO-HP) were integrated with a method that combines several biomarker responses into a general "stress index" denominated integrative biomarker response index (IBR) (Beliaeff & Burgeot 2002). The IBR was calculated according to Xie et al (2016):…”

Microplastic in cultured oysters from different coastal areas of China

“…Oysters are commercially important species and ecosystem engineers, and they can provide ecosystem services including water filtration and shoreline stabilization (Drexler et al, 2014). Furthermore, oysters are ideal test organisms for environmental monitoring because of their sessile lifestyle and high accumulation of a wide range of pollutants (Xie et al, 2016). In China, oysters account for N30% of the total marine mollusks and yielding a total production of 4.4 million tons in 2014 (People's Republic of China Ministry of Agriculture, 2015).…”

Seawater acidification increases copper toxicity: A multi-biomarker approach with a key marine invertebrate, the Pacific Oyster Crassostrea gigas

“…Thus, the integrated biomarker response (IBR), as an indicator of environmental stress, was adopted in this study for better assessment of the ecological risk posed by Cu and/or OA. As economic and ecological important bivalve species in coastal and estuaries areas, the Pacific oyster Crassostrea gigas (C. gigas) has been extensively used in ecotoxicological assessment of environment perturbations (Behrens et al, 2016;Devos et al, 2015;Dineshram et al, 2016;Haberkorn et al, 2014;Luna-Acosta et al, 2017;Moreira et al, 2016;Xie et al, 2016). Therefore, the main goal of this study was to determine whether OA aggravates the toxicity of Cu on the C. gigas.…”