Ouyang Xianheng, Pan Jiangling, Rao Hui, Sun Qiaoyun
College of Forestry, Northwest A&F University, Yangling 712100, China.
Zhejiang Provincial Forestry Fund Management Center, Hangzhou 310000, China.
Insects. 2024 Dec 12;15(12):985. doi: 10.3390/insects15120985.
Invasive alien species often undergo shifts in their ecological niches when they establish themselves in environments that differ from their native habitats. Fisher LaSalle (Hymenoptera: Eulophidae), specifically, has caused huge economic losses to trees in Australia. The global spread of cultivation has allowed to threaten plantations beyond its native habitat. It is, therefore, urgent to implement effective control measures to mitigate the impact of this pest. The optimized MaxEnt model was used to predict the potential global distribution of based on occurrence data and environmental variables. The centroid shift, overlap, unfilling, and expansion (COUE) framework was employed to evaluate niche dynamics during the global invasion process by comparing the ecological niches of in both native regions and regions affected by invasions (hereafter referred to as "invaded"). The results indicated that the distribution of is primarily influenced by temperature, precipitation, and the human influence index variables. Its ecological niche was shown to have considerably expanded from native to invaded regions. Under future climate scenarios, the potential geographical distribution of is projected to be concentrated primarily in East Asia, Southeast Asia, Western Europe, and Southern Oceania. In the future, the potentially suitable areas for the establishment of are expected to further expand. This study provides a unified framework for exploring the niche dynamics of invasive alien species globally. Emphasizing early warning and control in uninvaded areas is crucial for minimizing ecological and economic threats.
外来入侵物种在与原生栖息地不同的环境中定殖时，其生态位往往会发生变化。具体而言，费氏桨角蚜小蜂（膜翅目：姬小蜂科）已给澳大利亚的树木造成了巨大经济损失。其种植的全球传播使其能够威胁到其原生栖息地以外的种植园。因此，迫切需要实施有效的控制措施来减轻这种害虫的影响。利用优化的最大熵模型，基于发生数据和环境变量预测了费氏桨角蚜小蜂的潜在全球分布。采用质心偏移、重叠、未填充和扩张（COUE）框架，通过比较费氏桨角蚜小蜂在原生区域和受入侵区域（以下简称“入侵区域”）的生态位，评估其全球入侵过程中的生态位动态。结果表明，费氏桨角蚜小蜂的分布主要受温度、降水和人类影响指数变量的影响。其生态位已显示出从原生区域到入侵区域有相当大的扩展。在未来气候情景下，费氏桨角蚜小蜂的潜在地理分布预计主要集中在东亚、东南亚、西欧和南大洋。未来，费氏桨角蚜小蜂潜在的适宜定殖区域预计将进一步扩大。本研究为全球探索外来入侵物种的生态位动态提供了一个统一的框架。强调在未入侵地区进行预警和控制对于将其生态和经济威胁降至最低至关重要。
