Effect of Bacillus insecticidal proteins on the Japanese beetle, Popillia japonica (Scarabaeidae)

The Japanese beetle, Popillia japonica, is a minor pest in Japan but has become serious invasive species several parts of the world, causing damage variety crops and high costs for its control. Many different methods control have already been applied, including chemical cultural measures, as well mass-trapping. efficacy biological attempts, using parasitoids, nematodes, fungi, or bacteria also discussed especially with regard to added value lower ecological impact. effect Bacillus thuringiensis (Bt) treatments probably attributable proteins accumulated parasporal body bacteria. In this context, study was conducted assess insecticidal activity against P. japonica Bt 3 domain non-parasporal Cry1Ia protein, structurally distant Mpp23Aa Xpp37Aa. Their tested larvae modified leaf-dip protocol, only showed some activity. results suggest that additional studies on are needed developing new strategies japonica.