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Antioxidant capacity and carbon-based scope for growth of brackish water clams Corbicula japonica under the combined effects of natural and anthropogenic factors by Preeti Pokhrel; Sayaka Mashiko; Shumona Akther; Jumpei Suzuki; Masafumi Fujita is a Environmental Science article available to read on EtoBox.

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Changes in natural estuarine environment and anthropogenic disturbances are becoming significant threats to organisms, particularly bivalves. A deeper understanding of the relationship between biochemical-and individual-level responses is necessary to assess the combined effects of natural and anthropogenic factors on bivalves. To the best of our knowledge, this is the first study where the oxygen radical absorbance capacity (ORAC) and carbon-based scope for growth (C-SFG) were applied as biomarkers to evaluate the response of the brackish water clam Corbicula japonica to four spatiotemporally varying environmental factors. High water temperature and food availability supported C-SFG while high salinity inhibited it. Most of wastewater (WW) treatments resulted in negative C-SFG values because of a reduced clearance rate and increased excretion rate. In particular, high food availability with WW treatment resulted in the lowest C-SFG value of -114 μg C⋅ind -1 h -1 . The ORAC was activated in response to high salinity with WW treatment (p < 0.05). To ascertain the combined effects of the natural and anthropogenic factors, principal component and cluster analyses were performed on the

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Author

Preeti Pokhrel; Sayaka Mashiko; Shumona Akther; Jumpei Suzuki; Masafumi Fujita

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)