TY - JOUR AU - Shanmugam, P. S. AU - Balagurunathan, R. AU - Sathiah, N. AU - Rao, N. G. V. PY - 2007/12/15 Y2 - 2024/03/29 TI - Susceptibility of Different Instars of Earias vittella (Fabricius) to Bacillus thuringiensis Insecticidal Proteins JF - Journal of Biological Control JA - JBC VL - 21 IS - 2 SE - Articles DO - 10.18311/jbc/2007/3852 UR - https://informaticsjournals.com/index.php/jbc/article/view/3852 SP - 217-221 AB - The susceptibility of different instars of <em>Earias vittella</em> (Fabrieius) to<em> Bacillus thuringiensis</em> (Bt) insecticidal proteins (ICP) was studied. The LC<sub>50</sub> of CrylAa, CrylAb, Cry1Ac, CryiC and Cry1E were 108.54, 97.04, 66.62, 1240.83 and 1335.60 ng/cm<sup>2</sup>, respectively to E. vittella neonates. The order of toxicity of different ICPs to second and third instar was Cry1Ac &gt; CrylAb &gt; CrylAa. Overlap 95 per cent fiducial limits at LC<sub>50</sub> of CrylAa and CrylAb showed similar toxicity of these toxins to second and third instars of <em>E. vittella</em>. The possibility of these toxins and toxicity parameters in resistance management is discussed. ER -