| The composition and structure of the arthropod communities in orange orchard were investigated in Nanchang, Jiangxi Province, using the leaf observational method and the trapping technique from April to December 2012A total of 144037 individuals, belonging to 25 species, were founded in our investigationAmong them, the high density species included with Panonychus citri MeGregor and Unaspis yanonensis(Kuwana), 13 kinds of common species including Diaphorina Citri (Kuwayama), Bactrocera dorsalis Hendel, Contarinia citri Barnes, Chrysoperla sinica(Tjeder)and so on, and others were the low density speciesDuring the change of arthropod community indexes, Shannon-Wiener diversity index reached their maximum values, and Simpson dominance index appeared their minimum values in late May and late September, respectivelySubsequently, we described the population dynamics of high density species and some common speciesIt indicated that Pcitri emerged predominantly in late May, but Uyanonensis from July to AugustDcitri and Ccitri had the similar population dynamics which appeared in the period of spring shoots in CitrusBdorsalis adults had the highest density in late September, and the dynamic of Csinica was partly similar with that of PcitriThrough the study, we described clearly the main species of canopy arthropods on Citrus, and the dynamics of important species, and the results would provide some basic information for the control and prevention of pests, and the protection and utilization of insect enemies in orange orchard of Nanchang, Jiangxi province |
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