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| Acute Toxicity of Several Conventional Disinfectants to Sand Worm Perinereis aibuhitensis |
| LAI Zu-peng,FENG Shan-cong,LIANG Wu-qi,WEI Yu,TANG Long,WU Ming-can,PAN Ying |
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Abstract The acute toxicity of KMnO4 ,PVP-I ,and BCDMH to sand worm Perinereis aibuhitensis were studied at 25-26 ℃ by a static test method . The results showed that the toxicity order of the three disinfectants to the san worm was ranged as KMnO4 > BCDMH > PVP-I . The medium lethal concentrations (LC50 ) of KMnO4 to the san worm were found to be 18 .7 mg/L in 24 h ,11 .8 mg/L in 48 h , and 7 .2 mg/L in 96 h ,the LC50 of PVP-I 632 .9 mg/L in 24 h ,492 mg/L in 48 h ,and 420 .6 mg/L in 96 h ,and the LC50 BCDMH 560 .5 mg/L in 24 h ,283 mg/L in 48 h and 190 mg/L in 96 h with safe concentration (SC) of 1 .4 mg/L ,89 .1 mg/L and 21 .6 mg/L for the three disinfectants ,respectively .It is recommended that KMnO4 be used carefully , while BCDMH and PVP-I are proposed to be ideal disinfectant in the breeding and disease control of P .aibuhitensis .
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Received: 25 March 2014
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