对硫磷胁迫下不同硒源对中华米虾超氧化物歧化酶和过氧化氢酶活性的影响  

Effects of dietary selenium supplementation on the activities of two antioxidant enzymes in Caridina denticulata sinensis exposed to ambient parathion

作　　者：王宏伟[1] 杨丽坤[1] 赵建华[1] 姜玉梅[1] 李玲[1] 张兰军[1] 

机构地区：[1]河北大学生命科学学院,河北保定071002

出　　处：《上海水产大学学报》2008年第2期238-241,共4页Journal of Shanghai Fisheries University

基　　金：河北省动物学重点学科资助(200706);河北大学首届大学生创新项目资助(Q2007)

摘　　要：研究了在对硫磷胁迫下饲料中添加不同硒源对中华米虾(Caridina denticulata sinensis)超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性的影响。结果表明,饲料中添加等量无机硒和有机硒,有机硒组米虾的SOD和CAT活性均高于无机硒组(P<0.05)。对硫磷对中华米虾的24 h?48 h?72 h和96 h的半致死浓度分别为15.40?8.73?4.59和1.09μg/L。中华米虾在1.09μg/L以下不同浓度对硫磷胁迫24 h,随着对硫磷浓度的升高,无机硒和有机硒组虾的SOD和CAT活性变化趋势一致,均是先升后降,有机硒组米虾的SOD和CAT活性均高于无机硒组(P<0.05)。可见,中华米虾对饲料中添加有机硒的吸收效果好于无机硒。The effects of dietary selenium supplementation on superoxide dismutase （SOD） and catalase （CAT） of Caridina denticulata sinensis exposed to ambient parathion were investigated. The shrimps were fed with inorganic selenium or organic selenium in the diet. Results showed that the 24 h, 48 h, 72 h and 96 h LC50 values of parathion were 15.40, 8.73, 4.59 and 1.09 μg/L. The activities of SOD and CAT were observed after 24 h of exposure to parathion with series concentration less than 1.09 μg/L. The activities of SOD and CAT fluctuated with the increasing of parathion concentration. Compared with the shrimps fed with inorganic selenium, the shrimps fed with organic selenium had a higher index of SOD and CAT activity. According to the results, there is a higher absorptance of Caridina denticulata sinensis to proper organic selenium than inorganic selenium.

关 键 词：硒 对硫磷 超氧化物歧化酶 过氧化氢酶 中华米虾 

分 类 号：S963[农业科学—水产养殖]