对硫磷胁迫下锰对中华米虾SOD活性的影响  

Effects of Dietary Mn Supplementation on the Superoxide Dismutase(SOD) of Caridina denticulata sinensis Exposed to Parathion

作　　者：王宏伟[1] 蔡端波[2] 霍艳高[1] 陈立军[1] 

机构地区：[1]河北大学生命科学学院,河北保定071002 [2]河北大学质量技术监督学院,河北保定071000

出　　处：《河北大学学报（自然科学版）》2009年第1期81-84,共4页Journal of Hebei University(Natural Science Edition)

基　　金：河北大学横向基金资助项目(05026);河北大学博士基金资助项目

摘　　要：研究对硫磷胁迫下，饲料中添加适量的锰对中华米虾（Caridina denticulata sinensis）超氧化物歧化酶（SOD）活性的影响．结果表明，对硫磷对中华米虾的24，48，72和96h的半致死质量浓度（LC50）分别为15．00，8．20，6．83和4．60μg／L．中华米虾有锰组和无锰组在不同质量浓度对硫磷（0～4．60μg／L）的胁迫下，SOD活力受到明显影响，均呈现先升高后降低的趋势，饲料中添加有适量锰（150μg／g）的实验组米虾SOD的活力要高于对照组米虾SOD的活力．可见，饲料中添加适量的锰可提高中华米虾SOD的活性，有益于提高虾体抗氧化的能力，增强虾体对环境胁迫的耐受力．The effects of dietary Mn supplementation on the superoxide dismutase（SOD） of Caridina denticulata sinensis exposed to parathion were investigated. The results showed that the 24, 48, 72 and 96 h LC50 values of parathion were 15.00, 8.20, 6.83 and 4.60 μg/ L. With the increasing of parathion concentration（from 0 to 4.60μg/L） ,the activities of SOD all rised firstly and then went down. Moreover, the SOD activities of shrimps fed a Mn-supplemented diet of 150μg/g were significantly higher than those fed a control diet. Thus, an appropriate Mn-supplemented diet can raise the antioxidant capacity of C. d. sinensis and inprove it＇s tolerance to the environmental stress.

关 键 词：锰 对硫磷 超氧化物歧化酶 中华米虾 

分 类 号：S963.734[农业科学—水产养殖]