Behavioral Response Of Female Grapholita Molesta To Volatiles Of Apricot And Plum Fruit

For most moths,plant volatiles play an important role in host recognition,host selection,directional feeding,mating,spawning and reproduction.The oriental fruit moth(OFM),Grapholita molesta(Busck)(Lepidoptera:Tortricidae),is one of the main fruit pests in the world.The female moth mating once in a lifetime and have great contribution to the population number.Therefore,the preventive treatment of female moths is the key point.The oriental fruit moth has many host plants which belong to the family Rosaceae.The fruit yield and quality of fruit trees were damaged because of the larval boring characteristic.Generally,peach and pear are the main host of the oriental fruit moth,apricot and plum are considered secondary host.Extraction and identification of volatiles from fruit of apricot and plum in mature period.Tested on antennae potential response and wind tunnel behavior of several volatile components to female G.molesta.The main results are as follows:(1)7 common esters and aldehydes were identified in apricot and plum fruits at maturity(N-butyl butyrate,Hexyl butyrate,Decanal,Butyl caproate,Ethyl hexanoate,Nonanal,Hexyl acetate).Apricot and plum as secondary hosts may be due to have Decanal and lack of cis-3-Hexenyl acetate,and Benzaldehyde(2)3 compounds were screened form electrophysiological and behavioral responses.Unmated female moths have the best response to Ethyl hexanoate.Mating female moths have the best response to Nonanal.Two kinds of female moths both have poor response to Decanal.In addition,it was also found that the attractant effect of the mixed substance was better than the monomer compound.Based on the results of this study,it will be able to lay a foundation for exploring the host selection mechanism of G.molesta.The selected monomer compounds can provide theoretical support for the research and development of food source attractant,repellent and synergist.In addition,the results can also provide theoretical and applied basis for green control based on behavioral regulation of population ecology.