栎方翅网蝽Corythucha arcuata(Say)在中国的潜在适生区预测

【目的】栎方翅网蝽是栎树上的一种重要害虫,自21世纪入侵意大利以来,迅速在欧洲地区暴发成灾。本文旨在探明栎方翅网蝽入侵中国的风险性。【方法】利用MaxEnt生态位模型预测栎方翅网蝽在中国的潜在适生区,分析栎方翅网蝽入侵、定殖和扩散的可能性。【结果】栎方翅网蝽入侵中国并在中国黄河长江中下游平原定殖和扩散的风险性极高,高度适生区包括重庆市、安徽省、湖北省、河南省、浙江省、湖南省、贵州省和四川省。通过分析环境因子重要性表明,最冷季度平均温度是影响栎方翅网蝽适应区的最关键环境变量;年平均温度、等温性和最干季度平均温度是影响栎方翅网蝽适应区分布的主要环境因素。【结论】栎方翅网蝽在我国定殖扩散风险高,建议植物检疫部门加强栎方翅网蝽的监控,并将栎方翅网蝽列入中华人民共和国进境植物检疫性有害生物名录。

Potential geographical distribution areas of Corythucha arcuata (Say) in China

Aim] The oak lace bug, Corythucha arcuata (Hemiptera:Tingidae), is a significant pest in oaks. Originally a North American species, since its first detection in Italy in 2000s, C. arcuata has rapidly spread in Europe. The purpose of this paper is to explore the risk of invasion of C. arcuata in China.Method] The MaxEnt ecological niche model was used to predict the potentially suitable area of C. arcuata in China and analyzed the possibility of its invasion, colonization and diffusion.Result] There are highly suitable areas of colonization and diffusion in the middle and lower reaches of the Yellow River and the Yangtze River, including Chongqing city, and Anhui, Hubei, Henan, Zhejiang, Hunan, Guizhou and Sichuan provinces. After the analysis of climatic variables, the coldest average seasonal temperature is the most critical environmental variable which affects the adaptation area of C. arcuata; other influential factors include the annual average temperature, iso-temperature and the quarterly average temperature of the driest quarter.Conclusion] Since the high risk of colonization and diffusion for C. arcuata in China, we suggest that the phytosanitary authority should strengthen the monitoring of C. arcuata and add it to the list of phytosanitary pests of the People''s Republic of China.