Vector-borne Virus Research Center, Fujian Province Key Laboratory of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China.
State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China.
Pest Manag Sci. 2021 Sep;77(9):4000-4008. doi: 10.1002/ps.6423. Epub 2021 May 24.
Ips is a bark beetle genus of 45 species, many of which are pests of conifer forests and plantations under stress. Twelve Ips species are recorded from China and presumably native there. From 2016 to 2018, specimens suspected to be Ips calligraphus and Ips grandicollis, were collected from traps with ethanol as a sole lure in Zhuhai, Guangdong, China. Both species originate in North America and infest various species of native or introduced pines. Since Ips species are known to cause or exacerbate problems in pine plantations, and a regional survey using traps baited with attractants were implemented in this study to investigate the extent of the introduction.
Both I. calligraphus and I. grandicollis have been collected repeatedly from several traps with Ips attractants in Zhuhai, Guangdong, China since 2016. Potential distributions of these two species in Asia, inferred using MaxEnt, is extensive, given the high projected environmental suitability in North America, South America, Mediterranean Europe, Northern Africa, and Eastern Asia. The host plant of I. calligraphus from Zhuhai was identified as slash pine Pinus elliottii using DNA barcoding of gut contents from trapped individuals.
This is the first report of the establishment of two American pine bark beetles, I. calligraphus and I. grandicollis in continental Asia. The gut content of both species suggests that these pest feeds on a non-native host. Whether the two species present high-risk to Asian forests will become clear with more research on their interactions with native pines.
伊普斯是一个包含 45 种物种的树皮甲虫属，其中许多是处于压力下的针叶林和人工林的害虫。有 12 种伊普斯物种记录在中国，据推测原产于那里。从 2016 年到 2018 年，在中国广东珠海，从仅用乙醇作为诱饵的诱捕器中收集到疑似伊普斯·卡利格拉弗斯和伊普斯·格兰迪科利斯的标本。这两个物种均原产于北美，侵袭各种本土或引进的松树。由于已知伊普斯物种会导致或加剧松林种植园的问题，并且在本研究中实施了使用诱饵诱捕器的区域性调查，以调查引入的程度。
自 2016 年以来，在中国广东珠海的几个诱捕器中，反复收集到伊普斯·卡利格拉弗斯和伊普斯·格兰迪科利斯。使用 MaxEnt 推断的这两个物种在亚洲的潜在分布范围很广，因为在北美的预测环境适宜度很高，还包括南美洲、地中海欧洲、北非和东亚。从诱捕个体的肠道内容物进行 DNA 条形码鉴定，珠海的伊普斯·卡利格拉弗斯的寄主植物为湿地松 Pinus elliottii。
这是首次报道两种美洲松皮甲虫，伊普斯·卡利格拉弗斯和伊普斯·格兰迪科利斯在亚洲大陆的建立。这两个物种的肠道内容表明，这些害虫以非本地宿主为食。这两个物种是否对亚洲森林构成高风险，随着对其与本地松树相互作用的更多研究，情况将变得更加清楚。
