全球对三虫感染水平季节性变化的分析显示,与温度的联系是微弱和可变的
Rachel A Paterson1, Robert Poulin2, Christian Selbach3
1Norwegian Institute for Nature Research, Torgarden, PO Box 5685, 7485, Trondheim, Norway.
Oecologia
|June 26, 2023
概括
季节性温度变化并不总是影响水生宿主中的三虫寄生虫感染. 大多数感染模式都显示出特定物种的反应,而不是可预测的现象学趋势.
科学领域:
- 生态生态学 生态生态学
- 寄生虫学的寄生虫学
- 环境科学 环境科学
背景情况:
- 现象学,即生物事件的时间表,与温带淡水系统的季节性变化密切相关.
- 然而,水生宿主中季节性寄生虫感染动态的普遍模式仍然不清楚.
研究的目的:
- 调查水生宿主中形虫感染水平季节性 (温度驱动) 变化的一般模式.
- 为了确定温度是否影响不同宿主类型和息地间的寄生虫流行和繁多.
主要方法:
- 编制了几百个估计的春天到夏天的变化在三虫感染.
- 分析了多个宿主物种,息地和宿主类型 (中间和最终) 的数据.
主要成果:
- 从春天到夏天观察到几乎相同数量的感染水平的增加和减少.
- 温度变化对第一个中间宿主感染率的影响很小,但对第二个中间或最终宿主没有影响.
- 在息地和宿主种群中,没有发现季节性温度升高对三虫感染的普遍影响.
结论:
- 甲虫感染水平主要表现为季节性温度变化的特异性和物种特异性反应.
- 这种变异性挑战了寄生虫动态中明显的现象学或继承模式的概念.
- 预测生态系统对气候变化的反应因温度调节的这些最小和可变的影响而复杂化.
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