Effect of the exposure to suspended solids on the enzymatic activity in the bivalve Sinonovacula constricta

作     者：Guojun Yang Lun Song Xiaoqian Lu Nianbin Wang Yang Li 

作者机构：College of Fisheries and Life ScienceDalian Ocean UniversityDalianLiaoning 116023China Liaoning Ocean and Fisheries Science Research InstituteDalianLiaoning 116023China College of Applied and TechnologyDalian Ocean UniversityDalianLiaoning 116023China 

出 版 物：《Aquaculture and Fisheries》 (渔业学报（英文）)

年 卷 期：2017年第2卷第1期

页      面：10-17页

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 100602[医学-中西医结合临床] 10[医学] 

基　　金：This project was supported by the National Basic Research Program of China(No.2011CB403600) the State Oceanic Administration of the People’Republic of China(201005018) the World Wide Fund for Nature(10000866) the Liaoning Province Ocean and Fishery Hall(2011009,201208) 

主　　题：Suspended solids Sinonovacula constricta Antioxidant enzymes ATP ases 

摘      要：Aquatic animals are susceptible to sudden changes of their living environment but they adopt strategies to cope with adverse environmental *** by suspended solids,often associated with a dramatic change in the concentrations of important water-quality variables is a frequent occurrence in China s coastal waters and *** we studied the impact of suspended solids on the activities of the antioxidant enzymes superoxide dismutase(SOD)and catalase(CAT),as well as adenosine triphosphates(including Na^(+)K^(+)-ATPase,Mg^(++)-ATPase,Ca^(++)-ATPase)and H^(+)K^(+)-ATPase in the gills and visceral mass tissues of the molluscan bivalve Sinonovacula constricta exposed(4,8,12,16,20,and 24 days)to various concentrations of suspended *** results showed that the antioxidant enzymes cooperated closely to effectively scavenge superoxide anion free radicals and H2O2(which can ultimately inhibit gill activity)through the modification of SOD and/or CAT enzymatic *** activity(considered to be a sensitive indicator of toxicity)could play an effective role in the maintenance of functional integrity of the plasma membranes as well as some other intracellular *** the exposure,a decrease in the Nat K^(+)-ATPase,Mg^(++)-ATPase,and Ca^(++)-ATPase activity of the gills was observed suggesting that they were inhibited by the *** results also indicated that,from day 4 to day 16,exposure to high concentrations of suspended solids had an inhibitory effect on the activity of H^(+)-K^(+)-ATPase in the visceral mass of ***,after a period of adaptation the H^(+)-K^(+)-ATPase activity was restored to original *** results suggest that long-term exposure to high levels of suspended solids disturb osmoregulation,gastric acid secretion and digestion,cause oxidative damage,as a consequence of antioxidant enzymes inactivation which eventually damages the gills,affect the food intake and transformation,ultimatel