氯化汞胁迫下硒对中华米虾SOD活性的影响  

Effect of Dietary Selenium Supplementation on the Activity of SOD Caridina denticulata sinensis under HgCl_2 stress

作　　者：王宏伟[1] 霍艳高[1] 门金闩[1] 陈立军[1] 赵建华[1] 

机构地区：[1]河北大学生命科学学院,河北保定071002

出　　处：《淡水渔业》2007年第1期69-71,共3页Freshwater Fisheries

基　　金：河北省动物学重点学科资助项目(200701);河北大学自然科学基金青年资助项目(No.Q200407)

摘　　要：研究了在氯化汞胁迫下,饲料中的硒对中华米虾(Caridina denticulata sinensis)超氧化物歧化酶(SOD)活性的影响。实验表明,氯化汞对中华米虾的24 h、48 h、72 h和96 h的半致死浓度分别为145、132、130和127μg/L。中华米虾在127μg/L以下几种不同浓度氯化汞胁迫下,SOD活性受到明显影响,但饲料中添加硒0.45μg/g的实验组米虾SOD活性较对照组明显提高。因此,在一定浓度氯化汞胁迫下,饲料中添加适量的硒可提高中华米虾SOD活性,利于提高虾体的抗氧化酶活力。The effects of dietary Selenium supplementation on the Superoxide Dismutase （SOD） of Caridina denticulata sinensis under HgCl2 stress were studied. The results showed that the 24, 48, 72 and 96 h LC50 values of HgCl2 at pH 8.0 were 145, 132, 130 and 127 μg/L. Moreover, with the increasing of HgCl2 concentration, the activity of SOD rised. The SOD activity of prawns fed with Selenium - supplemented diet of 0. 45 μg/g were significantly higher than those of prawns fed with control diet. It indicated that dietary Selenium supplementation of proper concentration could improve the SOD activity under HgCl2 stress.

关 键 词：中华米虾(Caridina denticulata sinensis) 硒 氯化汞 超氧化物歧化酶活性 

分 类 号：S931.3[农业科学—渔业资源]