埃博拉病毒的演变和出现与土地使用变化有关
Christian E Lange1,2,3,4, Thomas R Barnum5, David J McIver3,6
1Biology Department, Kwantlen Polytechnic University, Surrey, British Columbia, Canada.
Ecological monographs
|June 23, 2025
概括
土地利用变化与埃博拉病毒 (EBOV和SUDV) 的演变和传播有关. 息地碎片化改变了景观,推动病毒适应和扩散到新的地区.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 流行病学 流行病学
背景情况:
- 人为土地利用变化是已知的疾病出现的驱动因素,通过改变人类-病原体相互作用.
- 假设土地使用变化也会影响病原体的进化和传播动态.
研究的目的:
- 调查土地利用变化与扎伊尔埃博拉病毒 (EBOV) 和苏丹埃博拉病毒 (SUDV) 的演变和传播之间的联系.
- 更新EBOV和SUDV的植物地理,并将它们与历史的土地使用模式相关联.
主要方法:
- 对EBOV和SUDV进行植物地理分析,以确定它们的进化历史和地理分布.
- 病毒种类地理与历史土地使用变化的相关性,特别是1940-1960年间的人为分裂.
- 对病毒表面葡萄糖蛋白中氨基酸变化的分析,以推断适应性进化.
主要成果:
- 最近的EBOV共同祖先大约在1960年在刚果民主共和国西北部出现,而SUDV大约在1958年在苏丹南部的萨凡纳出现.
- 在1940年至1960年期间,这两个地区都发生了重大的人为景观碎片化,改变了人类的定居点和植被以用于农业.
- 在碎片化后,病毒变异分离和分散,与景观变化空间相关,并沿生态区域边界分离.
- 病毒糖蛋白中的氨基酸变化表明,在应对不断变化的环境中,免疫逃避和宿主细胞附着的适应.
结论:
- 土地利用变化与EBOV和SUDV的演变和传播有关.
- 息地碎片化和相关的生态变化推动病毒适应,影响宿主-病原体动态.
- 土地使用变化增加了溢出风险,并直接影响病毒的演变和多样化.
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