Reduction of the Toxicity of Fenitrothion to Prawns by Piperonyl Butoxide

Kunio Kobayashi, Yang Wang, Nobuyoshi Imada, Yuji Oshima, Rizald Max Rompas

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3 Citations (Scopus)


The effectiveness of piperonyl butoxide (PB) in reducing the mortality of striped prawn and kuruma prawn during exposure to fenitrothion (FS) was examined. The 24-h LC50 values of PB for striped and kuruma prawns were 3.5 and 1.6 ppm at 25°C, respectively. Therefore, PB-treatment for both prawns was conducted at 0.25 ppm, corresponding to one-tenth of the mean of both 24-h LC50 values. The PB-pretreatment before FS-exposure and also the addition of PB to FS-water were effective in decreasing the FS-toxicity to both prawns. The most effective reduction of the toxicity to the prawns was obtained by continuous PB-treatment before and during FS-exposure, resulting in extensions of 50% survival time by 4–6 times in striped prawn and 10–16 times in kuruma prawn, compared with the respective control groups non-treated with PB.

Original languageEnglish
Pages (from-to)717-720
Number of pages4
Issue number4
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • Aquatic Science


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