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동자개 (Pseudobagrus fulvidraco) 치어의 생존 및 성장에 미치는 Parathion의 영향
조규석 ( Kyu Seok Cho ),박종호 ( Jong Ho Park ),지정훈 ( Jung Hun Jee ),강주찬 ( Ju Chan Kang ) 한국수산과학회 2004 한국수산과학회지 Vol.37 No.5
N/A The toxic impact of parathion on bagrid catfish (Pseudobagrus firlvidraco) juvenile was examined 96 hr LC_(50) value of parathion estimated as 1.90 mg/L. Chronically, bagrid catfish were exposed for 30 days to concentrations of parathion, i.e. 63, 95, 190 and 380 ㎍/L, representing 3.3, 5.0, 10.0 and 20.0% of the 96 hr LC_(50). Survival rate was significantly affected by the concentration over 63 ㎍/L after 10 days. Growth rate, specific growth rate (SGR) and feed efficiency were reduced in time as concentration dependent manner. Growth rates of the exposed groups were significantly reduced as 28.06-60.63% to the control fish, SGR was decresed as 1.50-4.72% and feed efficiency was declined as 6.10-11.90%. It can be concluded that if P. fulvidraco is chronically exposed to parathion over 63 ㎍/L concentration, the physiological damages might affect growth factors of the fish.