구리(Cu) 노출에 따른 전복, Haliotis discus hannai의 생체축적 및 성장의 변화
Bioaccumulation and growth change in the abalone Haliotis discus hannai exposed to copper
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The objective of this study was to investigate the effects of exposured Cu2+on growth and bioaccumulation of abalone Haliotis discus hannai. Abalone were exposed to various concentration of Cu2+(0, 5, 10, 20, 40 ㎍/L). Bioaccumulation of tissues, hepatopancreas, muscles and gills were measured. hepatopancreas and gills Cu2+ concentration of abalone increases to extent during the 4 weeks accumulation time. But muscles showed no significant changes, with respect to control. These data indicate that abalone Haliotis discus hannai hepatopancreas and gills can be considered adequate target tissues for waterborne exposured of Cu2+. Weight growth rate of abalone exposed to Cu2+ was significantly decreased in 20 and 40㎍/L groups compared to control. This study revealed that high Cu2+ concentration (≥ 20㎍/ℓ) reduced growth of abalone. These data indicate that excessive waterborne Cu2+ can affect the toxicity of xenbiotics to abalone through alterations in growth rate. Thus, environmental standard of Cu2+ 20㎍/L, should be considered a potential source of variation in toxicological studies with abalone.
Abstract
The objective of this study was to investigate the effects of exposured Cu2+on growth and bioaccumulation of abalone Haliotis discus hannai. Abalone were exposed to various concentration of Cu2+(0, 5, 10, 20, 40 ㎍/L). Bioaccumulation of tissues, hepatopancreas, muscles and gills were measured. hepatopancreas and gills Cu2+ concentration of abalone increases to extent during the 4 weeks accumulation time. But muscles showed no significant changes, with respect to control. These data indicate that abalone Haliotis discus hannai hepatopancreas and gills can be considered adequate target tissues for waterborne exposured of Cu2+. Weight growth rate of abalone exposed to Cu2+ was significantly decreased in 20 and 40㎍/L groups compared to control. This study revealed that high Cu2+ concentration (≥ 20㎍/ℓ) reduced growth of abalone. These data indicate that excessive waterborne Cu2+ can affect the toxicity of xenbiotics to abalone through alterations in growth rate. Thus, environmental standard of Cu2+ 20㎍/L, should be considered a potential source of variation in toxicological studies with abalone.
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