出版社：Korean Society of Environmental Health and Toxicology
摘要：Indigenous species means a species that is likely,due to historical presence,to occur at a specified site for some portion of its life span. Therefore,indigenous species can be useful as an indicator to assess environmental risk caused by hazardous chemicals in a specific site. So far a few toxicity studies using freshwater species which are indigenous to Korea have been carried out. In this study,a freshwater shrimp (Neocardina denticulata) indigenous to Korea was used for acute toxicity test of heavy metals. Neocardina denticulata were exposed to cadmium chloride (CdCl2),copper chloride (CuCl2) and zinc chloride (ZnCl2) using automatic flow-through system for 96 hours. The 96h LC50s were calculated as 0.043 (0.042~0.045) mg CdCl2/L,0.104 (0.098~0.113) mg CuCl2/L and 2.021 (1.633~2.594) mg ZnCl2/L. When compaired with some international standard species such as medaka (Oryzias latipes),Neocardina denticulata had high sensitivity. Therefore,this study suggested that Neocardina denticulata have possibilities for a sensitive test species to test heavy metal toxicity in aqua-system.
关键词：Neocardina denticulata;heavy metals;acute toxicity;flow-through system
