有机硒对汞致日本沼虾毒性的拮抗作用  

Effects of Organic Selenium on Toxicity of Mercuric Chloride to Prawn Macrobrachium nipponense

作　　者：王宏伟[1] 蔡端波[2] 肖国华[3] 赵春龙[3] 徐海明[1] 张兰军[1,4] 王红霞[1,5] 

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,河北保定071002 [3]河北省水产研究所,河北秦皇岛066200 [4]中国科学院植物所 [5]国家海洋局海洋二所

出　　处：《水产科学》2010年第5期270-273,共4页Fisheries Science

基　　金：教育部国家重点(培育)学科资助项目(201001);河北省生物学强势特色学科资助项目(201002);河北大学博士基金资助项目(2010);河北大学横向课题资助项目(05026);河北省科技支撑项目(07220501D);河北省水产局项目(冀渔科20090101);国家留学基金委公派留学地方合作资助项目(2009);国家科技重大专项子课题项目(2008ZX07528-001)

摘　　要：研究了饲料中添加0.45μg/g的富硒酵母对日本沼虾生长及对Hg2+毒性的拮抗作用,探明SOD作为Hg胁迫指标的可行性。选择体长2.6～3.0 cm、体质量0.30～0.40 g的日本沼虾,暂养于60 cm×30 cm×45 cm的水族缸中,投喂含豆油、面粉、豆粉、玉米面、维生素预混物、无机盐预混物的配合饲料。结果表明,有机硒组的体长和体质量增长率均大于无硒对照组;有机硒组和无硒对照组中日本沼虾的SOD活力均随HgCl2质量浓度呈现峰值变化;说明饲料中添加适量有机硒可促进机体生长,提高机体SOD的活力,在一定程度上拮抗HgCl2所致的毒性。Influence of the diet containing organic selenium at a rate of 0. 45μg/g on the growth and the antagonism of toxicity caused by mercuric chloride was studied in prawn Macrobrachiurn nipponens with body length of 2. 6-3.0 cm and body weight of 0.30-0. 40 g. The 21 d feeding trial showed that there was significantly better growth in the prawn fed the diet containing organic selenium than that in the animals fed the control diet. The prawn fed the diet containing organic selenium had higher SOD activity than the prawn fed the diet without organic selenium. The antagonism of selenium to mercuric chloride was the most obvious near selenium mercuric promotes chloride. the peak levels, indicating that the growth of the prawn,to a the diet supplemented with appropriate level of organic certain extent,and antagonism to the toxicity caused by mercuric chloride.

关 键 词：日本沼虾 HgCl2 SE 超氧化物歧化酶(SOD) 

分 类 号：S963.734[农业科学—水产养殖]