[Effects of environmental factors on Phyllotreta striolata dispersion].
Using marking recapture method, this paper studied the effects of host plants and climatic factors on the dispersion of Phyllotreta striolata adults. The results showed that the dispersion of the beetle was impelled by environment elements (tao = 1 ). Temperature and wind speed had significantly positive correlations with the dispersion of the beetle (P < 0.05), while high temperature had a negative correlation. Wind orientation had a significant effect on the dispersion of the beetle, with the adults mostly flying against or vertically to the wind. Humidity contributed little to the dispersion (P >0.05). Host plant was one of the important factors affecting the dispersion of the beetle. Among the plants studied, flowering Chinese cabbage ranked first in capturing marked adults, followed by mustard and Chinese cabbage, while nearly no marked adults were captured on Chinese kale.
Gao
Zezheng
Z
Laboratory of Insect Ecology, South China Agricultural University, Guangzhou. gao-zz@163.com
Wu
Weijian
W
Cui
Zhixin
Z
Liang
Guangwen
G
D000818:Animals; D001937:Brassica / Q000469:parasitology*; D002980:Climate; D001517:Coleoptera / Q000502:physiology*; D011157:Population Dynamics; D013696:Temperature