Study On The Bioecology And Plant Source Attractants Of Apriona Germari(Hope)

Apriona germari is an important boring insect and a major threat to more than20kinds of trees, including mulberry, poplar, and apple trees. It is widely distributed in China, where it causes serious damage. Having read a large number of documents, writer of this article discussed in the Apriona germari morphological characteristics, electrophysiology determination, smell behavior determination etc., and the purpose of this study was to analyze the principal volatile compounds of its host plants and to identify the most effective plant attractants for monitoring insect numbers, as a basis for forecast and control.The volatiles of four important host plants in this family, Morus alba, Broussonetia papyrifera, Cudrania tricuspidata and Ficus carica, were analyzed using ATD-GC-MS. The relative levels of individual chemical components were determined using normalization methods. In total,56different compounds were identified in the four plants, which were divided into four major categories:alcohols, aldehydes, alkenes. and esters.11of the volatiles were common to all four plants. These were:leaf alcohol, capryl alcohol, benzaldehyde,1-nonanal, decanal,1-octene, ocimene, leaf acetate, hexadecane,2,6-di-tert-butyl-4-methylphenol and2,4-di-tert-butylphenol.Electroantennograms from the antennae of Apriona germari were recorded in response to12kinds of compounds and4mixtures selected from the volatiles in the four host trees. And on the basis of the EAG research, the author selected8kinds of monomers to do smell behavior determination.