Abstract:
A 96-hour acute toxicity test was carried out to study the effect of Hg2+ on 5 species of Anguilla elver (Anguilla japonica, A.anguilla, A.bicolor pacifica, A.mormorata, A.rostrata). Result indicates that 24 h LC50 of Hg2+ isA.japonica(0.408 mgL-1) A.anguilla(0.179 mgL-1) A.rostrata(0.111 mgL-1) A.mormorata(0.052 mgL-1) A.bicolor pacifica(0.018 mgL-1). However, 48 h, 72 h and 96 h LC50 of Hg2+ is A.japonicaA.rostrata A.anguillaA.bicolor pacificaA.mormorata. Generally, A.japonica and A.rostrata show better tolerance and Hg2+ should be restricted in aquatic water strictly.