Early eclosion of overwintering cotton bollworm moths from warming temperatures accentuates yield loss in wheat
文献类型： 外文期刊
作者： Ouyang, Fang 1 ; Hui, Cang 2 ; Men, XinYuan 4 ; Zhang, YongSheng 1 ; Fan, Lipeng 1 ; Shi, Peijian 6 ; Zhao, Zihua 7 ; Ge, 1 ;
作者机构： 1.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest & Rodent, Beijing 100101, Peoples R China
2.Univ Stellenbosch, Dept Math Sci, Ctr Invas Biol, ZA-7602 Matieland, South Africa
3.African Inst Math Sci, ZA-7945 Cape Town, South Africa
4.Shandong Acad Agr Sci, Inst Plant Protect, Jinan 250100, Peoples R China
5.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Hunan, Peoples R China
6.Nanjing Forestry Univ, Inst Bamboo, Nanjing 210037, Jiangsu, Peoples R China
7.China Agr Univ, Dept Entomol, Coll Plant Protect, Beijing 100193, Peoples R China
关键词： Climate change;Helicoverpa armigera;Population dynamic;Time series;Asymmetrical effect
期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：5.567； 五年影响因子：6.064 ）
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收录情况： SCI
摘要： Understanding and predicting the impact of climate change on population demography, biotic Interactions and ecosystem service is central to ecology. Long-term time series analysis of insect populations is crucial for analyzing the 'effect of climate change on plant-insect interactions in agro-ecological systems; yet such data are often lacking. Here, based on field experiments and the long-term time series of the overwintering adult cotton bollworm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) collected since 1975, we investigate the dynamic trend of H. armigera, as well as its driving forces and effects on the recruitment of H. armigera and crop yield. Results illustrated a shift to early eclosion of diapausing pupae due to global warming, extending the duration and abundance of adults in the overwintering generation. This then led to more larvae recruited in the first generation, and consequently damages the wheat at early growing stages. Our results suggest that the asynchronous effects of rising global surface temperature on the relative growth rate of spring crops and insect pests could intensify in the future, causing accentuated crop yield loss. To mitigate the adverse herbivore-mediated effect on crop yield in a warming climate, efficient cultivation measures and pest management are necessary, such as planting precocious crops with short growth period and timely control of insect pests. (C) 2015 Elsevier B.V. All rights reserved.
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