To provide an important theoretical basis for the long-term population monitoring of Spodoptera frugiperda,we compare the field attraction effects of different lures on S.frugiperda,and select the dispenser material for the best attractant with prolonged release duration.In this study,SA@Ca2+/PCL microsphere was used as lure dispenser material for S.frugiperda.The attraction effects of five different lure compounds in filed monitoring assays were compared.Besides,the release dynamics of pheromone components in lure 1 and lure 2,which were carried with two different dispenser materials were compared by gas chromatography.The results supported that SA@Ca2+/PCL microsphere enabled to release the pheromone component slowly,and the basic structure of the dispenser material remained stable after 2 months in the laboratory.The continuous trapping ability of five different lures were ranked as follows:lure 1＞lure 5＞lure 4＞lure 3＞lure 2.It was worthy to note that lure 1 kept strong attraction effect after 80 d in the field.By comparing the sustained-release properties of lure 1 and lure 2 with different attractant effects,it was found that the sustained-release effect of lure 1 with long duration on the pheromone components in field attractant was significantly better than that of lure 2.SA@Ca2+/PCL microsphere has strong dispenser capacity over 80 d,which cover the full damage cycle of S.frugiperda,and this lays an important foundation for the continuous monitoring population of S.frugiperda.
维普
万方数据