Evidence of cross-channel dispersal into England of the forest pest Ips typographus

IF 4.3 1区 农林科学 Q1 ENTOMOLOGY
Daegan J. G. Inward, Emilio Caiti, Kerry Barnard, Séverine Hasbroucq, Katy Reed, Jean-Claude Grégoire
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Abstract

A breeding population of the tree-killing European spruce bark beetle Ips typographus was detected in England for the first time in 2018 and was initially assumed to have arrived with infested timber. To test the hypothesis that the beetles are dispersing naturally across the English channel, extensive trap networks were deployed in 2021 and 2022 to track the flight activity of the beetles from an outbreak hotspot in France and Belgium to southern England, including parallel ‘coastal’ traps on either side of the channel. Beetles were caught all along the transect, decreasing in abundance with distance from the outbreak area. Linear modelling indicates that beetles dispersed into England during 2021 and 2022, and that during a large-scale dispersal event in June 2021, beetles could have penetrated more than 160 km inland. The 2021 dispersal event initiated new incursions of the beetle in southeast England and demonstrates the extraordinary distance I. typographus may move under outbreak conditions. Our findings support the hypothesis of a damaging forest pest aerially dispersing across the barrier of the English channel and suggest that future incursions of this and other plant-associated pests may move via the same pathway.

Abstract Image

森林害虫 Ips typographus 跨海峡传播到英格兰的证据
2018 年,英国首次发现了杀死树木的欧洲云杉树皮甲虫 Ips typographus 的繁殖种群,最初推测该种群是随受侵染的木材一起到达英国的。为了验证甲虫在英吉利海峡上自然扩散的假设,2021 年和 2022 年部署了广泛的捕集网,以跟踪甲虫从法国和比利时的疫情热点地区到英格兰南部的飞行活动,包括海峡两侧平行的 "沿海 "捕集网。甲虫在整个横断面上都有捕获,其数量随着与疫情爆发区距离的增加而减少。线性建模表明,甲虫在2021年和2022年期间扩散到英格兰,在2021年6月的一次大规模扩散事件中,甲虫可能向内陆扩散了160多公里。2021 年的扩散事件引发了甲虫在英格兰东南部的新一轮入侵,并证明了在暴发条件下,I. typographus 可能移动的超常距离。我们的研究结果支持了一种破坏性森林害虫通过英吉利海峡的屏障进行空中扩散的假设,并表明这种害虫和其他与植物相关的害虫未来的入侵可能会通过相同的途径。
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来源期刊
Journal of Pest Science
Journal of Pest Science 生物-昆虫学
CiteScore
10.40
自引率
8.30%
发文量
114
审稿时长
6-12 weeks
期刊介绍: Journal of Pest Science publishes high-quality papers on all aspects of pest science in agriculture, horticulture (including viticulture), forestry, urban pests, and stored products research, including health and safety issues. Journal of Pest Science reports on advances in control of pests and animal vectors of diseases, the biology, ethology and ecology of pests and their antagonists, and the use of other beneficial organisms in pest control. The journal covers all noxious or damaging groups of animals, including arthropods, nematodes, molluscs, and vertebrates. Journal of Pest Science devotes special attention to emerging and innovative pest control strategies, including the side effects of such approaches on non-target organisms, for example natural enemies and pollinators, and the implementation of these strategies in integrated pest management. Journal of Pest Science also publishes papers on the management of agro- and forest ecosystems where this is relevant to pest control. Papers on important methodological developments relevant for pest control will be considered as well.
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