Study On Insect Community Structure And Field Trapping Effect In Zanthoxylum Bungeanum Garden

The Zanthoxylum linn plant belongs to Rutaceae.There are over 200 species in the world,and it is distributed in Asia,America,Africa and Oceania.There are about 45 species in China,distributed in China's Shaanxi,Gansu,Yunnan,Shandong and other regions.Agrilus zanthoxylumi Hou is the main pest of Zanthoxylum bungeanum.Once it breaks out,it will destroy the forest.In this experiment,different investigation methods were used to systematically study the structure of insect community in Zanthoxylum bungeanum Garden,and the trapping experiments of monomeric and compound semiochemicals were conducted in the field using the host plant volatiles and volatiles in hindgut and feces ofAgrilus zanthoxylumi.The experimental results are of great significance for understanding the types of pests in the Zanthoxylum bungeanum garden and comprehensive prevention of the Agrilus zanthoxylumi.(1)Using different survey methods,the insect community structure of Zanthoxylum bungeanum was studied.The results were showed 68 species of insect,belonging to 49 families,12 orders;and 47 species of phytophages belonging to 36 families,15 orders;21 species of predators belonging to 13 families,8 orders.There were 15 species of Coleoptera insects,accounting for 22.1%.The total number of diptera insects is the highest,with a total of 19221,accounting for 82.2% of the total number of insects.Insect dominant species of Zanthoxylum bungeanum include Megaselia curtineura,Musca domestica vicina,Calliphora vicina,Aphis gossypii,and Lycorma delicatula.(2)There are 13 kinds of main pests in the Zanthoxylum bungeanum insects,belonging to 11 families and 13 species,and divided into leaf pests,branch pests,trunk pests,and underground pests.The 13 pests were Papilio xuths,Holcocerus vicarious,Podagricomela cuprea,Agrilus zanthoxylumi,Doxrylus orientalis,Teleogryllus emma,Aphis gossypii,Pomponia linearis,Lycorma delicatula,Halyomorpha picus,Erthesina fullp,Asphondylia zanthoyli.Among all the pests,the pest with the most serious damage is the Agrilus zanthoxylumi.Once it breaks out,it will destroy the Agrilus zanthoxylumi plantation.(3)The total number of captured insects and the species number of captured insects from June 2 to September 6 increased first and then decreased.The total number of individuals and species of insects captured on June 28 to July 15 was the largest,with the maximum of 5934 and 60 species,respectively.Insect community diversity index and evenness index showed no correlation.The maximum values of both species appeared on June 28 to July 15.The maximum values were 3.40 and 0.83,respectively.From June 2 to July 15,the population of insects in Zanthoxylum bungeanumplantation was the most stable.(4)There was no significant difference in the number of traps of Agrilus zanthoxylumi females and males by using different lure(p<0.05,the same below).The best lure for trapping Agrilus zanthoxylumi were cis-9-Hexadecenal+Linalyl acetate+(1R)-(+)-limonene+ Myrcene+?-phellandrene,cis-9-Hexadecenal+(1R)-(+)-limonene+Myrcene+?-phellandrene,cis-9-Hexadecenal+ Linalyl acetate,cis-9-Hexadecena,cis-9-Hexadecenal+(1R)-(+)-?-pinene,cis-9-Hexadecenal+?-pinene in order.For field trapping,the best lure is cis-9-Hexadecenal+Linalyl acetate+(1R)-(+)-limonene+ Myrcene+?-phellandrene.