鸡血藤和甘草制剂对金鱼及泥鳅急性毒性的研究

Research on Acute Toxicity of Caulis spatholobi and Radix glycyrrhizae to Goldfish and Loach

为了探究不同浓度鸡血藤(Caulis spatholobi)和甘草(Radix glycyrrhizae)制剂对不同鱼类的急性毒性,参照预试验结果将鸡血藤和甘草制剂分别添加至养殖水中,5个浓度梯度分组放养金鱼和泥鳅,每隔12h观察死亡数并计数,96h结束试验,分析鸡血藤和甘草对金鱼和泥鳅半致死浓度和安全浓度。结果表明:两种药物对金鱼的急性毒性为甘草>鸡血藤,对泥鳅的毒性为甘草<鸡血藤;两种鱼类对鸡血藤和甘草的耐受性为金鱼>泥鳅。鸡血藤对金鱼和泥鳅的半致死浓度和安全浓度分别为2.539 0、1.655 0g·L-1和0.253 9、0.165 5g·L-1;甘草对金鱼和泥鳅的半致死浓度和安全浓度分别为2.201 0、1.842 0g·L-1和0.220 1、0.184 2g·L-1。

Aiming at detecting the acute toxicity of different concentrations of millettia（Caulis spatholobi）and liquorice（Radix glycyrrhizae）preparations to goldfish and loach. Under the premise of the pre-test, two kinds of fish were divided into five groups with different concentration of millettia and liquorice. The death numbers of each group were observed and recorded every 12 hours. At the end of the experiment（96 hours）, the half le- thal concentrations（LC50 ）and safe concentration of millettia and liquorice on goldfish and loach were analyzed. The results showed that acute toxicity of liquorice for goldfish was higher than millettia. Conversely,acute tox- icity of liquorice for loach was lower than millettia. Further more, the toleration of goldfish to millettia and liq- uorice was higer than that of loach. The individual half lethal concentrations and safe concentrations of millettia on goldfish and loach were 2.539 0,1.655 0 g·L^-1 and 0. 253 9,0.165 5 g·L^-1. Meanwhile, the half lethal con- centrations and safe concentrations of liquorice on goldfish and loach were 2. 201 0,1. 842 0 g·L^-1 and 0. 220 1, 0. 184 2 g·L^-1 individually.