The effects of climate warming on the migratory status of early summer populations of Mythimna separata (Walker) moths: A case-study of enhanced corn damage in central-northern China, 1980-2016
文献类型： 外文期刊
作者： Chen, Qi 1 ; Zhang, Yun-dong 1 ; Qi, Xiao-hong 1 ; Xu, Yong-wei 3 ; Hou, Yan-hong 1 ; Fan, Zhi-ye 1 ; Shen, Hai-long 1 ;
作者机构： 1.Luohe Inst Agr Sci, Luohe, Peoples R China
2.Key Lab Integrated Pest Management Crops Southern, Zhengzhou, Henan, Peoples R China
3.Henan Plant Protect & Plant Quarantine Stn, Zhengzhou, Henan, Peoples R China
4.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou, Henan, Peoples R China
关键词： climate warming; migration; Mythimna separata
期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.912； 五年影响因子：3.271 ）
ISSN： 2045-7758
年卷期： 2019 年 9 卷 21 期
页码：
收录情况： SCI
摘要： Mythimna separata (Walker) moths captured in light traps were monitored in Luohe, central-northern China, from 1980 to 2016. Annual average temperature recorded an increase of 0.298 degrees C/10 years in this region in the period. Our results indicate that a rising April and May average temperature and earlier occurrences of days recording the highest day temperature (30 degrees C) caused an advanced peak and increasing proportion of high ovarian development levels of first-generation females in earlier summers. Results using Johnson's formulation of "oogenesis-flight syndrome" indicate that increasing sexual maturity proportion has resulted in more emigrant individuals in the local first-generation moth becoming residents, and then increased individuals rapidly in the local second-generation moth since 2006. Consequences of this action have a boom in corn damage since 2007 in this region. Advanced peak dates of the first and second-generation moth revealed the same response to increasing average monthly temperatures in the monitoring period. Increasing temperatures, the average May temperature exceeds or equal to 22 degrees C, during the early 2000's may represent a physiological threshold for M. separata development. Our results suggest that climate warming may impact M. separata migratory status and cause a problem of crop production in this region.
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