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곤쟁이 , Archaeomysis kokuboi 에 미치는 phenol 의 급성 및 만성독성
김정선,진평 ( Jeong Seon Kim,Pyung Chin ) 한국수산과학회 1995 한국수산과학회지 Vol.28 No.1
Acute and chronic toxicity of phenol on the mortality, long-term survival and respiration rates of the mysid, Archaeomysis kokuboi adult and juvenile were examined. This experiment was conducted by static bioassay procedure with the different salinity at 25℃. In lethal test, the test animals were exposed to 6 different phenol concentrations to determine LC_(50) and LT_(50) (median lethal concentration and time) values. The LC_(50) values with the exposure time for the mysid adult ranged from 31.31ppm to 1.49ppm phenol and for the mysid juvenile ranged from 6.90ppm to 0.26ppm in all experimental groups. Mortality was increased with the decrease of salinity. The 96hr-LC_(50) values at 16, 24 and 32‰ salinity for the mysid adult were 1.49, 2.71 and 4.53ppm phenol, while the values for the mysid juvenile were 0.26, 0.56 and 0.71ppm, respectively. The ratios of 96hr-LC_(50) values for the mysid adult to those for the mysid juvenile at 16, 24 and 32‰ salinity were 5.73, 4.84 and 6.38, respectively. The mysid juveniles were more sensitive to phenol than the mysid adults. Compared LT_(50) values for the mysid adult with those for the mysid juvenile, the LT_(50) values for the mysid adult ranged from 384.7 to 29.0 hours at 1.7∼12.7ppm phenol concentrations and for the mysid juvenile ranged from 132.2 to 18.7 hours at 0.5∼6.0ppm phenol concentrations. The lowest LT_(50) values for the mysid adult and juvenile were showed at the combination of the highest experimental concentration of phenol and the lowest experimental salinity. The mysid juveniles showed lower LT_(50) values than those of adults. The chronic effects of phenol on the mysid at the sublethal effective concentration of phenol were lower in the 32‰ salinity group than 16 or 24‰ salinity groups. Oxygen consumption rates of the mysid adult were decreased with the increase of phenol concentration and exposure time, and decreased significantly in lower salinity at the same concentration of phenol.
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