Long-term effects of elevated CO2 and temperature on populations of the peach potato aphid Myzus persicae and its parasitoid Aphidius matricariae
Long-term effects of elevated CO2 and temperature on populations of the peach potato aphid Myzus persicae and its parasitoid Aphidius matricariae
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DOI：
10.1007/s004420050571
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发表时间：
1998-08-01
期刊：
影响因子：
2.7
通讯作者：
Knight, KJ
中科院分区：
文献类型：
--
作者：
Bezemer, TM;Jones, TH;Knight, KJ
在Ecotron受控环境设施中建立了陆地生态系统模型。升高的CO2（环境+200 μ mol/mol）和温度（环境+2.0摄氏度）对植物化学的影响，丰富的桃马铃薯蚜虫桃蚜，并对其寄生蜂之一的性能Matricariae，进行了研究。在实验结束时，地上植物总生物量不受大气CO2浓度升高的影响，也没有叶面氮和碳浓度。温度升高降低最终植物生物量，而叶片氮浓度增加。CO2和温度处理均提高了蚜虫的丰度。在CO2浓度升高的条件下，寄生率保持不变，但在温度升高的条件下，寄生率呈上升趋势。我们的结果表明，M.桃蚜是许多作物的重要害虫，在气候变化的条件下可能会增加其数量。
Model terrestrial ecosystems were set-up in the Ecotron controlled environment facility. The effects of elevated CO2 (ambient + 200 mu mol/mol) and temperature (ambient + 2.0 degrees C) on plant chemistry, the abundance of the peach potato aphid Myzus persicae, and on the performance of one of its parasitoids Aphidius matricariae, were studied. Total above-ground plant biomass at the end of the experiment was not affected by elevated atmospheric CO2, nor were foliar nitrogen and carbon concentrations. Elevated temperature decreased final plant biomass while leaf nitrogen concentrations increased. Aphid abundance was enhanced by both the CO2 and temperature treatment. Parasitism rates remained unchanged in elevated CO2, but showed an increasing trend in conditions of elevated temperature. Our results suggest that M. persicae, an important pest of many crops, might increase its abundance under conditions of climate change.