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| Acute Toxicity of Four Chemicals to Juvenile Pacific White Leg Shrimp Litopenaeus vannamei and Bastard Halibut Paralichthys olivaceus |
| CAI Li-shan,LUO Yao-ming,LI Duo-hui,XU Wei-ding,WANG Li-mei,LI Shu-man |
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Abstract Acute toxicity of polyvinyl alcohol ,propylene oxide ,acrylic acid and isoprene to juvenile Pacific white leg shrimp Litopenaeus vannamei with body weight of (0 .19 ± 0 .01) g and bastard halibut Paralich‐thys olivaceus with body weight of (4 .48 ± 1 .03) g was studied at water temperature of 18—20 ℃ by static and semi‐static bioassay .It was found that LC50 of polyvinyl alcohol ,propylene oxide ,acrylic acid and iso‐prene to juvenile Pacific white leg shrimp was 3823 .90 ,119 .90 ,376 .90 and 28 .36 mg/L for 24 h ,respec‐tively ,3368 .70 ,92 .28 ,280 .70 and 26 .60 mg/L for 48 h ,3085 .30 ,68 .58 ,193 .00 and 25 .33 mg/L for 72h ,and 2971 .10 ,60 .90 ,122 .60 and 25 .33 mg/L for 96 h ,with safe concentration of 297 .10 ,6 .09 , 12 .26 ,and 2 .53 mg/L ,indicating the toxicity descendant order of isoprene (moderate toxicity )> propyl‐ene oxide (moderate toxicity )> acrylic acid (low toxicity )> polyvinyl alcohol (low toxicity ) .T he LC50 of propylene oxide ,acrylic acid and isoprene to bastard halibut juveniles was shown to be 139 .90 ,243 .80 and 26 .41 mg/L for 24 h ,respectively ,137 .20 ,236 .00 and 26 .41 mg/L for 48 h ,132 .90 ,229 .00 and 26 .41 mg/L for 72 h ,and 130 .60 ,225 .40 and 26 .41 mg/L for 96 h ,with safe concentration of 13 .06 ,22 .54 and 2 .64 mg/L respectively ,indicating the toxicity descendant order of isoprene (moderate toxicity )>propylene oxide (low toxicity)> acrylic acid (low toxicity) .The findings may provide the reference to ec‐ological toxicology research of polyvinyl alcohol ,propylene oxide ,acrylic acid and isoprene to marine or‐ganisms .
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Received: 25 December 2014
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