Effects of the large scale ecological landscape features on the movements of Sitobion avenae (Fabricius)
Author of the article:DU Guang-Qing CAO Ya-Zhong YIN Jiao LI Ke-Bin**
Author's Workplace：State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection,Chinese Academy of Agricultural Sciences, Beijing 100193, China
Key Words： Sitobion avenae (Fabricius), winged aphid, landing, landscape ecology
Abstract： To understand how different landscapes affect the movements of Sitobion avenae (Fabricius) and to provide guidance for monitoring and predicting the occurrence of this pest. [Methods] The effects of typical landscapes, including mountains, rivers and lakes, on the movements of S. avenae were investigated by conducting extensive sampling in each landscape type during the time of year when winged aphids disperse. [Results] Numbers of winged aphids were much fewer to the south of mountains than to the north, and near rivers or lakes. Mountains can impede the flight of winged aphids, and isolated hills can influence their landing; aphids are more likely to land at higher altitude. Although rivers and lakes cannot be a barrier to the dispersal of winged aphids, fewer winged aphids land near rivers and lakes. [Conclusion] Large scale, ecological landscape features influence the movements of S. avenae in different ways.