Impact of minimum winter temperature on Lycorma delicatula (Hemiptera: Fulgoridae) egg mortality

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• 作者：Jung-Su Lee^a ; Il-Kwon Kim^a ; Sang-Hyun Koh^a ; Sung Jong Cho^b ; Suk-Jun Jang^c ; Seung-Hyeon Pyo^d ; Won IL Choi^a ; ^{choi_71@hanmail.net} ; ^{wchoi@forest.go.kr}
• 关键词：Climate change ; Egg mortality ; Lycorma delicatula ; Minimum winter temperature
• 刊名：Journal of Asia-Pacific Entomology
• 出版年：2011
• 出版时间：March 2011
• 年：2011
• 卷：14
• 期：1
• 页码：123-125
• 全文大小：548 K

文摘

Climate change, especially winter temperature increase, may be a factor the recent occurrence and range expansion of Lycorma delicatula (White) in South Korea. Egg mortality increased as minimum winter temperature decreased. Egg mortality was highest (93.32 % ) in Chuncheon, where the mean minimum winter temperature was lowest. The temperature that induced complete mortality of fulgorid eggs was estimated to be −3.44 °C on the basis of mean daily temperatures from December 2009 to February 2010 and −12.72 °C on the basis of mean daily minimum temperatures in January 2010. Mean winter temperatures during the last 30 years have gradually increased to above the temperature for 100 % mortality of the fulgorid egg. This suggests that the winter temperature increase may contribute to the successful settlement of the fulgorid in South Korea and its subsequent outbreak and expansion.