摘要
为研究壳聚糖对水环境镉致罗非鱼急性毒性的影响,将540尾罗非鱼随机分为2个处理组,每个处理3个重复,每个重复90尾。对照组按照水生生物急性毒性试验方法进行镉对罗非鱼的急性毒性试验;试验组加入等量壳聚糖,同法进行镉对罗非鱼的急性毒性试验。结果为:对照组24hLC50为20.51mg/L,试验组24hLC50为33.96mg/L,两组间差异极显著(P<0.01);对照组48hLC50为9.00mg/L,试验组48hLC50为18.59mg/L,两组间差异显著(P<0.05)。说明壳聚糖可以在一定程度上缓解镉对罗非鱼的毒性。
This experiment was conducted to investigate the effect of chitosan on acute toxicity induced by cadmium to Tilapia. 540 Tilapia were divided into two treatment groups, each with three replicates, and each replicate 90 fishes. The control group was designed according to the static test method of acute toxicity; the test group was added equal amount of chitosan with the same method of the control group. The results showed that 24 h LC 50 for the control group was 20.51 mg/L, 24 h LC 50 for the test group was 33.96 mg/L, the significant difference was found between two groups （P0.01）; 48 h LC 50 for the control group was 9.00 mg/L, 48 h LC 50 for the test group was 18.56 mg/L, the significant difference was also found between two groups （P0.05）. Chitosan might decrease the toxicity of cadmium to tilapia to some extent.
出处
《中国农学通报》
CSCD
北大核心
2011年第1期433-435,共3页
Chinese Agricultural Science Bulletin
基金
福建省教育厅科技项目"壳聚糖吸附罗非鱼饲料中重金属镉的研究"(JA10190)
福建省高校水产科学技术与食品安全重点实验室开放基金"昆虫壳聚糖对鲫鱼营养免疫作用研究"(2009J301)
集美大学优秀青年骨干教师基金2008C002)资助
关键词
壳聚糖
镉
罗非鱼
急性毒性
chitosan
cadmium
Tilapia
acute toxicity
