盐度对施氏鲟和西伯利亚鲟稚鱼的急性毒性  

Acute toxicity of salinity to juvenile Acipenser schrenckii and A.baerii

作　　者：赵峰[1,2] 庄平[1,2] 李大鹏[3] 章龙珍[1] 张涛[1] 

机构地区：[1]中国水产科学研究院东海水产研究所,农业部海洋与河口渔业重点开放实验室,上海200090 [2]上海高校水产养殖学E-研究院,上海水产大学生命科学与技术学院,上海200090 [3]华中农业大学水产学院,武汉430070

出　　处：《生态学杂志》2008年第6期929-932,共4页Chinese Journal of Ecology

基　　金：国家高技术研究发展计划项目(2004AA603110和2008AA10Z227);国家自然科学基金重大项目(30490234);上海市教育委员会E-研究院建设项目(E03009);农业部海洋与河口渔业重点开放实验室课题(开-1-04-08)

摘　　要：比较了盐度对施氏鲟(Acipenser schrenckii)和西伯利亚鲟(A.baerii)稚鱼的急性毒性效应。结果表明:施氏鲟稚鱼的96h盐度半致死浓度(LC50)为14.72,西伯利亚鲟为13.08;96h盐度LC50及盐度反应曲线显示,施氏鲟对盐度的耐受力大于西伯利亚鲟;在高盐度(≥14.70)下,2种鲟鱼依次表现出缓慢环游、狂躁环游、活动减弱、身体失衡和活动停止(死亡)等5种行为反应;西伯利亚鲟各行为反应出现的时间均早于施氏鲟,说明西伯利亚鲟对盐度的反应较施氏鲟敏感。A comparative study was made on the acute toxicity of salinity to juvenile Acipenser schrenckii and A. baerii. The results showed that the 96 h median lethal concentration （ LC50 ） was 14.72 for juvenile A. schrenckii and 13.08 for juvenile A. baerii. It was deduced from the 96 h LCs0 values and salinity response curves that A. schrenckii had higher salinity-resistance than A. baerii. The behavioral response of the two species to higher salinities （ ≥ 14.70 ） exhibited five ordinal behaviors, i. e. , slow swimming around the tank, manic swimming around the tank, swimming weakly, body imbalance, and movement stopping （dead）. Based on the appearance time of specific behavioral response of the two species, A. baerii was more sensitive to the salinity than A. schrenckii.

关 键 词：鲟鱼 成化驯养 半数致死浓度(LC50) 行为反应 

分 类 号：S917.4[农业科学—水产科学]