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  • Title: Susceptibility of legume pod borer (LPB), Maruca vitrata to delta-endotoxins of Bacillus thuringiensis (Bt) in Taiwan.
    Author: Srinivasan R.
    Journal: J Invertebr Pathol; 2008 Jan; 97(1):79-81. PubMed ID: 17689558.
    Abstract:
    Baseline susceptibility of legume pod borer (LPB) to the insecticidal crystal proteins (ICPs) from Bacillus thuringiensis, viz, Cry1Aa, Cry1Ab, Cry1Ac, Cry1Ca and Cry2Aa was assessed in Taiwan. Insect bioassays were performed by incorporating the Bt delta-endotoxins into the LPB artificial diet. The efficacy of different Bt delta-endotoxins against second instar larvae of LPB showed that the toxin Cry1Ab was the most potent toxin (LC(50) 0.207ppm), followed by Cry1Ca, Cry1Aa, Cry2Aa and Cry1Ac in descending order, with LC(50)s 0.477ppm, 0.812ppm, 1.058ppm and 1.666ppm, respectively. Hence, Cry1Ab and/or Cry1Ca toxins would provide effective control of early larval stages of LPB.
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