论文部分内容阅读
本文首先通过血凝实验证明太湖的微囊藻具有蓝藻毒素，在此基础上进行鱼类染毒实验，采用全细胞藻体和经冻解的藻液给鱼类染毒，结果发现全细胞输送灌胃染毒对鱼类（乌鳢）的毒性较小，半致死浓度ＬＣ５０×９６ｈ为３５０ｍｇ／ｋｇ；以冻解藻液腹腔注射染毒对鱼类（草鱼）毒性较大，一次染毒４小时的半致死浓度ＬＣ５０×４ｈ为４４０ｍｇ／ｋｇ，二次染毒６小时半致死浓度ＬＣ５０×６ｈ为２５０ｍｇ／ｋｇ，说明太湖微囊藻属于毒藻，毒性级别可定为中等。
In this paper, first through the blood coagulation test showed that the Taihu Lake has cyanobacterial toxin, on the basis of fish exposure experiments using whole cell algae and frozen algae solution to the fish poisoning and found that whole-cell delivery Gavage poisoning on fish (Ammonites) less toxic, LC50 × 96h semi-lethal concentration of 350mg / kg; frozen algae liquid intraperitoneal injection of fish (grass carp) toxicity, a four-hour exposure LC50 × 4h 440mg / kg, secondary toxicity 6h LC50 × 6h 250mg / kg, indicating that Taihu Lake are toxic algae, the toxicity level can be set at medium.