Projecting the Potential Global Distribution of Sweetgum Inscriber, Acanthotomicus suncei (Coleoptera: Curculionidae: Scolytinae) Concerning the Host Liquidambar styraciflua Under Climate Change Scenarios

Kaitong Xiao,Lei Ling,Ruixiong Deng,Beibei Huang,Yu Cao,Qiang Wu,Hang Ning,Hui Chen

Published 2024 in Insects

ABSTRACT

Simple Summary Acanthotomicus suncei is a newly discovered bark beetle in China that causes substantial mortality to American sweetgum Liquidambar styraciflua individuals. Currently, the number of host trees killed by this bark beetle is increasing. Climate change has exacerbated this problem, causing its range to expand. Considering the wide global distribution of its host, Liquidambar styraciflua, the pest is likely to continue to spread and expand. Here, using CLIMEX and the Random Forests model, we projected the potential global distribution of A. suncei concerning the host L. styraciflua. Under future change scenarios, the total suitable area is projected to decrease to a certain extent. However, the changes in its original habitats provide three spreading trends to Southwest, Central, and Northeast China. Meanwhile, suitable areas in some countries in Southeast and South Asia bordering China are also expected to show an increased distribution, which poses substantial challenges for forest managers. Our projected results provide significant data regarding the current and future potential distribution of A. suncei worldwide, which could be used as a reference for recognizing areas currently vulnerable to potential invasions by this pest.

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