신규 살조물질인 Thiazolidinedione 유도체 (TD49)의 해양생태계에 대한 급성독성평가 (Acute Toxicity Assessment of New Algicides, Thiazolidinedione Derivative (TD49) to Marine Ecosystem)

서지정보

· 발행기관 : 한국생물공학회
· 수록지 정보 : KSBB Journal / 25권 / 6호 / 527 ~ 532페이지
· 저자명 : 임은채, 신준재, 박인태, 한효경, 김시욱, 조훈, 김성준

초록

A thiazolidinedione derivative, TD49 with the highly selective algicide to red tide was newly synthesized and its acute toxicity was examined in order to evaluate the effect on aquatic ecosystems of coast. Major three species having important role in the food chain of marine ecosystem, such as Skeletonema costatum of microalgae, Daphnia magna of crustacea, Paralichthys olivaceus of flatfish fingerling were employed for the acute toxicity assessment. EC50 or LC50 as the assessment criterion was investigated to each specie, and NOEC (No Observed Effect Concentration)and PNEC (Predicted No Effect Concentration) from most sensitive specie to toxicity of TD49 were further calculated. EC50 of S. costatum in 96-hour, EC50 of D. magna in 48-hour, and LC50 of P. olivaceus in 72-hour for TD49were 0.34 μM, 0.68 μM, and 0.58 μM, respectively. NOEC from the results of S. costatum was estimated to be 0.20μM and PNEC was estimated as 3.40 nM by applying factor value of 100 to EC50 0.34 μM of S. costatum. In addition,it was revealed that Solutol used as the dispersing agent of TD49 had very little toxic influence under the concentration range of 0~0.4 μM used in TD49 toxicity experiment. Although the estimated concentration of TD49that will be sprayed onto the coastal field for the algicide is higher than NOEC value, it is considered that the spraying concentration would not be a considerable problem due to a dilution effect by tide at the opened coast.

영어초록

A thiazolidinedione derivative, TD49 with the highly selective algicide to red tide was newly synthesized and its acute toxicity was examined in order to evaluate the effect on aquatic ecosystems of coast. Major three species having important role in the food chain of marine ecosystem, such as Skeletonema costatum of microalgae, Daphnia magna of crustacea, Paralichthys olivaceus of flatfish fingerling were employed for the acute toxicity assessment. EC50 or LC50 as the assessment criterion was investigated to each specie, and NOEC (No Observed Effect Concentration)and PNEC (Predicted No Effect Concentration) from most sensitive specie to toxicity of TD49 were further calculated. EC50 of S. costatum in 96-hour, EC50 of D. magna in 48-hour, and LC50 of P. olivaceus in 72-hour for TD49were 0.34 μM, 0.68 μM, and 0.58 μM, respectively. NOEC from the results of S. costatum was estimated to be 0.20μM and PNEC was estimated as 3.40 nM by applying factor value of 100 to EC50 0.34 μM of S. costatum. In addition,it was revealed that Solutol used as the dispersing agent of TD49 had very little toxic influence under the concentration range of 0~0.4 μM used in TD49 toxicity experiment. Although the estimated concentration of TD49that will be sprayed onto the coastal field for the algicide is higher than NOEC value, it is considered that the spraying concentration would not be a considerable problem due to a dilution effect by tide at the opened coast.

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