Tarbiat Modares University Journal of Crop Protection 2251-9041 5 1 2016 03 01 The toxic effect of camphor vapour against Aphis craccivora Koch (Hemiptera: Aphididae) and some of its natural enemies 149 156 1274 10.48311/jcp.2016.1274 EN Dalia Adly Department of Biological Control, Plant Protection Research Institute, Agriculture Research Center, Giza, Egypt. Ehab Bakr Acarology Research Department, Plant Protection Research Institute, Agriculture Research Center, Giza, Egypt. Journal Article Fumigant toxicity of camphor was studied against the aphid <em>Aphis craccivora</em> Koch and three associated natural enemies, i.e. <em>Coccinella undecimpunctata</em> L., <em>Aphelinus albipodus</em> Hayat & Fatima and <em>Aphidius colemani </em>Viereck. <em>Aphis craccivora</em> was the most tolerant one compared with all tested natural enemies as the recorded LC₅₀ values were 12.71, 6.33, 1.16 and 0.48 mg camphor/liter space for the above mentioned insects, respectively. Subjecting newly emerged adults of <em>A. craccivora</em> to LC₂₅ of camphor vapor significantly reduced female longevity from 17.6 to 6.45 days and reduced the female daily progeny from 4.44 to 1.93 nymph / female, which resulted in a reduction in productivity as finite rate of increase decreased from 1.57 to 1.14 female / female / day. Aphids that survived after subjection to LC₅₀ were found to have significantly higher amount of acid phosphatase and G. S-transferase than non-treated aphids. Inversely, Survived aphids were found to have significantly less amount of β-esterases and alkaline phosphatase than non-treated aphids; while no significant difference was found in case of α-esterases. Camphor fumigant can be a candidate as a control agent against <em>A. craccivora</em> but with restriction because of its drawbacks on natural enemies. https://jcp.modares.ac.ir/article_1274_e702e51da2c0f5be4dd354bb3e295d37.pdf