Data from: How differential management strategies affect Ips typographus L. dispersal

Bark beetle outbreaks have a devastating effect on economically important forests worldwide, thus requiring extensive application of management control strategies. The presence of unmanaged protected areas in close proximity to managed forests can instigate concerns that bark beetle infestations may spread from unmanaged into managed stands. We studied the impact of differential management of forest stands on the dispersal dynamics of the European spruce bark beetle, Ips typographus, making use of inferential population genetics on mitochondrial and nuclear genomes. Bayesian inferences of migration rates and a most parsimonious dispersal tree show that outgoing gene flow was consistently higher from managed to unmanaged areas. Reason for that is likely the thorough removal of potential breeding material in managed forests and thus the dispersal of the base stock beetles from these areas to unmanaged areas where breeding material is available. Our study suggests that the potential threat posed by unmanaged to managed forests in regard to I. typographus infestation needs to be carefully re-considered.树皮甲虫（bark beetle）大规模爆发会对全球具有经济价值的森林造成毁灭性影响，因此亟需广泛推行经营管控策略。紧邻经营林分布的未经营保护区的存在，会引发相关担忧：树皮甲虫虫害可能从未经营区域扩散至经营林分中。本研究聚焦森林林分差异化经营管理对欧洲云杉树皮甲虫（Ips typographus）扩散动态的影响，借助基于线粒体基因组（mitochondrial genome）与核基因组（nuclear genome）的推断性种群遗传学方法开展研究。迁移率的贝叶斯推断（Bayesian inference）结果与最简约扩散树均显示，经营区域向未经营区域的迁出基因流始终处于更高水平。该现象的潜在成因可能为：经营林区已彻底清除潜在繁殖寄主材料，致使种群源甲虫从这些区域扩散至存在可用繁殖寄主材料的未经营区域。本研究表明，针对I. typographus虫害，未经营区域对经营林分构成的潜在威胁亟需得到重新审慎评估。