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通过向水体添加不同浓度的汞(Hg^2+),观察其对中华绒螯蟹幼蟹(2.01±0.16)g的毒性影响.结果表明,Hg^2+对其24,48,72,96h的半致死浓度(LC50)分别为0.5428,0.4716,0.4332和0.3423mg/L.中华绒螯蟹幼蟹在0,0.01,0.05,0.10,0.20,0.30mg/L的Hg^2+条件下饲养40d后,各浓度组幼蟹存活率分别为96.67%,86.67%,73.33%,63.33%,56.67%,43.33%;增重率和蜕皮率随着Hg^2+浓度的升高而降