Divergent pheromone-mediated insect behaviour under global atmospheric change

被引:38
作者
Mondor, EB [1 ]
Tremblay, MN [1 ]
Awmack, CS [1 ]
Lindroth, RL [1 ]
机构
[1] Univ Wisconsin, Dept Entomol, Madison, WI 53706 USA
关键词
air pollution; atmospheric change; bottom-up; carbon dioxide; greenhouse gas; ozone; pheromone; predator-prey; top-down;
D O I
10.1111/j.1365-2486.2004.00838.x
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
While the effects of global atmospheric changes on vegetation and resulting insect populations('bottom-up interactions') are being increasingly studied, how these gases modify interactions among insects and their natural enemies ('top-down interactions') is less clear. As natural enemy efficacy is governed largely by behavioural mechanisms, altered prey finding and prey defence may change insect population dynamics. Here we show that pheromone-mediated escape behaviours, and hence the vulnerability of insects to natural enemies, are divergent under atmospheric conditions associated with global climate change. Chaitophorus stevensis, a common aphid on trembling aspen trees, Populus tremuloides, have diminished escape responses in enriched carbon dioxide (CO2) environments, while those in enriched ozone (O-3) have augmented escape responses, to alarm pheromone. These results suggest that divergent pheromone-mediated behaviours could alter predator-prey interactions in future environments.
引用
收藏
页码:1820 / 1824
页数:5
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