The effects of climate warming on the migratory status of early summer populations of

Autor: Qi, Chen, Yun-Dong, Zhang, Xiao-Hong, Qi, Yong-Wei, Xu, Yan-Hong, Hou, Zhi-Ye, Fan, Hai-Long, Shen, Di, Liu, Xing-Kai, Shi, Shi-Min, Li, Yun, Duan, Yu-Qing, Wu
Rok vydání: 2018
Předmět:
Zdroj: Ecology and Evolution
ISSN: 2045-7758
Popis: 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°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°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°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.
Mythimna separata (Walker), an important migratory insect pest, were monitored in Luohe, central‐northern China, from 1980 to 2016. With the data of monitoring and ovary dissection, we found more emigrant individuals becoming residents and enhance corn damage in this region over this period because earlier occurrences of days recording the highest day temperature (30°C). Climate warming may impact M. separata migratory/residence status in its early summer population and cause a problem of summer‐fall corn production in the northern central China.
Databáze: OpenAIRE
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