首页|Impacts of Low Salinity Stress on Physiological Responses of the Gill in the Iwagaki Oyster Crassostrea nippona
Impacts of Low Salinity Stress on Physiological Responses of the Gill in the Iwagaki Oyster Crassostrea nippona
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Crassostrea nippona is a valuable species for aquaculture with considerable potential for commercial oyster farming.How-ever,it is vulnerable to changes in salinity levels in coastal environments.In this study,we investigated the impacts of low salinity stress on the physiological responses of C.nippona.The hemolymph osmolality could not reach equilibrium with the surrounding en-vironmental osmolality that was below salinity 15 within 1 week.Cell expansion,cellular valuocation,decrease of gill cilia,increased apoptotic cells under salinity 10 were observed through microscopic techniques.The activities of immunity-related enzymes,includ-ing alkaline phosphatase(AKP),acid phosphatase(ACP),superoxide dismutase(SOD),and catalase(CAT),were significantly in-creased at salinity 10 compared with the control group.These findings highlight the vulnerability of C.nippona to low salinity stress and provide insights into the physiological changes in response to fluctuating salinity levels.Understanding these physiological re-sponses is crucial for effective aquaculture management and developing strategies to mitigate the negative impacts of low salinity stress on C.nippona populations in coastal areas.
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NSTL
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