两种同源性恐龙鞭状体的入侵过程中对比的利基动态
1Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 310, 12587, Berlin, Germany. macedo@edu.unirio.br.
Scientific reports
|August 10, 2025
概括
侵入性恐龙虫Ceratium hirundinella和C. furcoides在新的范围中显示出明显的气候利基转移. 了解这些利基动态对于预测入侵风险和管理水生生态系统至关重要.
科学领域:
- 生态与入侵生物学 生态与入侵生物学
- 微生物生态学 微生物生态学
- 预测建模预测建模
背景情况:
- 基于利基的模型对于预测物种入侵至关重要,但由于利基的转变,它们的准确性可能会受到影响.
- 利基保护主义在入侵物种中很常见,但微生物的模式,特别是恐龙鞭状动物,不太了解.
- 侵入性恐龙虫Ceratium hirundinella和C. furcoides已经影响了非美洲原住民范围内的生物多样性和水质.
研究的目的:
- 研究入侵性恐龙虫Ceratium hirundinella和C. furcoides在进入北美淡水生态系统后的气候利基变化.
- 评估利基保护主义和扩张/收缩模式,使用两种物种的五个利基动态指标.
- 确定本地气候预测因素是否足以评估这些恐龙虫的入侵风险.
主要方法:
- 使用五种不同的利基动态指标对利基保守主义的分析.
- 两种物种的当前分布与欧洲本土气候环境的比较.
- 对Ceratium hirundinella和Ceratium furcoides的利基稳定性,扩张和不填充的评估.
主要成果:
- Ceratium hirundinella表现出高的利基稳定性,其目前的分布与其本土温带气候保持一致,这表明了预先适应.
- 皮 (Ceratium furcoides) 显示出显著的利基扩张和不填充,这表明它在不同的热带和亚热带气候中传播的潜力更大.
- 在这两种同源的入侵物种之间,在它们的非原生范围中观察到明显的气候利基反应.
结论:
- 侵入性微生物的利基动态可以显著变化,甚至在密切相关的物种之间.
- 仅依赖本地环境数据可能会低估入侵风险,特别是对于像C. furcoides这样的表现出利基转移的物种.
- 未来的研究应该集中在时间利基转移和生态匹配与驱动入侵的传播压力的相互作用上.
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