The behavioral and antioxidant response of the bivalve Gomphina veneriformis to sediment burial effect  

作　　者：Xiaojing Li Linlin Chen Zhengquan Zhou Baoquan Li Xin Liu 

机构地区：[1]Key Laboratory of Coastal Environmental Processes and Ecological Remediation of Chinese Academy of Sciences,Yantai Institute of Coastal Zone Research,Yantai 264003,China [2]University of Chinese Academy of Science,Beijing 100049,China [3]Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China [4]Royal Netherlands Institute for Sea Research,Department of Estuarine and Delta Systems,Utrecht University,Yerseke 4400,Netherlands

出　　处：《Acta Oceanologica Sinica》2021年第6期75-82,共8页海洋学报（英文版）

基　　金：The Key Research Project of Frontier Science of Chinese Academy of Sciences under contract No.QYZDB-SSWDQC041;the Program of Ministry of Science and Technology of China under contract No.2015FY210300;the Strategic Priority Research Program of the Chinese Academy of Sciences under contract Nos XDA23050304,XDA23050202;the Open Research Fund of the Laboratory of Marine Ecosystem and Biogeochemistry of State Oceanic Administration under contact No.LMEB201716;the Fund of the China Scholarship Council。

摘　　要：A laboratory-based microcosm experiment was carried out to examine both the behavioral and antioxidant response of the clam Gomphina veneriformis under the conditions of 3 types of burial material(sand,silt,silt-sand mixture)with 3 burial depths(5 cm,15 cm,30 cm).The concentration of dissolved oxygen decreased significantly after 3 d of burial in all experimental groups.In silt and sand-silt mixture groups,the interstitial water quality became worsened with lower pH,and higher NH4^(+)-N concentration,where clam mortality occurred simultaneously.However,clam samples in all sand groups and 5 cm,15 cm sand-silt mixture groups survived well for 8 d.Obviously fewer individuals left in the bottom sand in the 15 cm,30 cm silt groups and 30 cm sand-silt mixture groups than in the 5 cm groups.Therefore,it suggests that adding silt and increasing burial depth could stimulate the vertical movement of organisms and cause lethal effects.It was found that the burial depth was the key factor that influenced the activities of antioxidant enzymes,such as superoxide dismutase(SOD)and catalase(CAT).The SOD and CAT activities in the gills and hepatopancreases of organisms both showed significant upregulation in 30 cm burial depth after buried for 8 d.Higher enzyme activities were found in gills than in hepatopancreases,which indicated that the gills of the bivalve G.veneriformis were more susceptible to burial effects than hepatopancreases.Overall,this study shows that sediment burial could cause effects on the biological behavior and antioxidant enzyme activities.

关 键 词：Gomphina veneriformis burial effect biological response physiological adaptation antioxidant enzyme 

分 类 号：X145[环境科学与工程—环境科学] Q958.8[生物学—动物学]