期刊
ENVIRONMENTAL ENTOMOLOGY
卷 39, 期 4, 页码 1092-1100出版社
OXFORD UNIV PRESS INC
DOI: 10.1603/EN10026
关键词
temperature; invasive species; relative humidity; dispersal; climate change
类别
资金
- Natural Sciences and Engineering Research Council of Canada
- Agriculture and Agri-Food Canada
The cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham) (Coleoptera Curculionidae), is an invasive pest of canola (Brassica no pus L and Brassica awn L.) in western Canada Under current climatic conditions, C obstrictus is spreading from established populations in southwestern Alberta at approximate to 55 km/yr We studied the influence of climatic conditions on C obstrictus flight behavior in 2007 and 2008 and eastward dispersal from the western border of Saskatchewan from 2002 to 2007 Positive linear relationships between increases in mean temperature and flight height and between greater mean maximum temperature and expanded dispersal distances were significant Increases in relative humidity were associated with reduced flight heights and dispersal distances We developed models that predict the relationships of temperature and relative humidity with flight height and with dispersal distance. We also discuss implications for C obstrictus dispersal under current climatic conditions and in the context of predicted climate change.
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