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- W2393019218 abstract "The security of polyhexamethylene biguanide(PHMB)on different growth stages of Litopenaeus vannamei and feeding algae were investigated.The results showed:cumulative mortality of juvenile and adult Litopenaeus vannamei increased with increasing concentration of PHMB.24 h and 48 h median lethal concentrations(LC50)of PHMB on juvenile shrimp of Litopenaeus vannamei were 64.1 mg·L-1 and 31.13 mg·L-1, and security concentration(Sc)was 2.20 mg·L-1.24 h and 48 h median lethal concentrations(LC50)of PHMB on adult shrimp of Litopenaeus vannamei were 66.17 mg·L-1 and 32.16 mg·L-1, and security concentration(Sc)was 2.28 mg·L-1.In order to guarantee security on culturing Litopenaeus vannamei, the using amount of PHMB should below 0.5 mg·L-1.Hatching and metamorphosis test showed:hatching rate of control group was 87%, and hatching rate of test group was the range of 79%～92%.There was no significant influence on hatching rate of zygote when the concentration of PHMB below 125 mg·L-1, and there was no significant influence on metamorphosis rate of nauplius when the concentration of PHMB below 0.5 mg·L-1.With the increase of PHMB concentration, the growth inhibition rate of Isochrysis galbana and Platymonas subcordiformis was increasingly apparent.There was an excellent relationship between dose and effect of PHMB on Isochrysis galbana and Platymonas subcordiformis, and the sensitivity of Platymonas subcordiformis to PHMB is higher than Isochrysis galbana.The highest concentration of no significant influence of PHMB on Isochrysis galbana and Platymonas subcordiformis was 5 mg·L-1.48 h, 96 h and 144 h EC50 of PHMB on Isochrysis galbana were 27.01, 34.95 mg·L-1 and 33.14 mg·L-1, and the corresponding concentrations of Platymonas subcordiformis were 34.65,28.73 mg·L-1 and 20.57 mg·L-1.According to the classification of aquatic organisms toxicity, the toxicity of PHMB to Isochrysis galbana and Platymonas subcordiformis belonged to moderate toxicity." @default.
- W2393019218 created "2016-06-24" @default.
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- W2393019218 date "2009-01-01" @default.
- W2393019218 modified "2023-09-23" @default.
- W2393019218 title "Security on Different Growth Stages of Litopenaeus vannamei and Feeding Algae of Polyhexamethylene Biguanide(PHMB)" @default.
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