| Lepidoptera are important agricultural and forestry pests and some resource insects,so it is of great significance to conduct in-depth research on the monitoring and early warning of their flight diffusion ability.This study mainly constructs the prediction equation of the flight diffusion ability of moths.To understand moths insects diffusion ability,this experiment adopts the light trap wild moths and insect flight mill system,tethering them at 25 ±1 ℃,RH65±5% dark environment for ten hours,collecting try insect flight distance,total flight time,average speed,the single most long flight time,single farthest flight distance,average single farthest flight speed and the ability to pause times seven kinds of flight parameters,as well as nine kinds of morphological parameter data,including the length,the width of forewings,the area of forewings and the length of posterior wings,the width of posterior wings,the area of posterior wings,thorax width,body length and wing load.R software is used to analyze the correlation and stepwise regression between the flight ability and morphological parameters of 28 species of moth pests,and a flight ability equation is established to predict the occurrence of moth insects.The results are as follows:1.According to the comprehensive analysis of the selected moths in this study,the correlation between wing parameters and flight ability of the moths is low,and the stepwise regression equation of cumulative analysis distance is not established.The stepwise regression equations of body shape parameters and flight ability are all valid,but the linear relationship between the maximum flight time,the maximum flight distance and the number of stops is not significant.The stepwise regression equations of morphological parameters and flight ability are established,and the linear relationships of the seven regression equations established reaches a very significant level.2.From the stepwise regression analysis of flight parameters and wing shape parameters of seven Geometridae,it can be concluded that the longer the moth’s forewings are,the stronger the flight endurance is and the faster the speed is.The narrower the forewings are,the greater the endurance and the faster the flight is.It can be seen that the wings of the adult moths have a certain influence on the flight ability.In general,the larger the moth is,the closer it flies,while the smaller the moth is,the farther it flies.Although the correlation between flight parameters and wing parameters is not very close,it can be seen through stepwise regression analysis that the equation established by flight parameters and wing parameters can well predict the flight ability of the moth.3.From the stepwise regression analysis of the flight ability parameters and wing shape parameters of nine species of Noctuidae,it can be concluded that the longer the moth’s forewings are,the stronger the flight endurance is and the faster the speed is.The shorter the posterior wings are,the greater the endurance is and the faster the flight is.In conclusion,the length of forewings and posterior wings of Noctuidae adults has certain influence on flight ability.Although the correlation between wing type parameters and flight ability is not high,through stepwise regression equation analysis,it can be seen that the mathematical equation built by wing type parameters and flight ability can predict the flight ability of the moth more accurately,and effectively monitor its occurrence in advance. |
