在正在衰退的河流繁殖青中,虫感染表现出历史传播和当代季节性
A M Belasen1,2, R A Peek3, A J Adams4
1Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA.
Royal Society open science
|February 1, 2024
概括
自20世纪40年代以来,菌菌 Batrachochytrium dendrobatidis (Bd) 已经向北扩散,影响山脚黄腿青 (Rana boylii). 保护工作必须针对特定的高风险地区和时间来保护这种物种.
科学领域:
- 两动物疾病生态学
- 野生动物保护 野生动物保护
- 病原体的传播动态病原体的传播动态
背景情况:
- 山脚黄腿青 (Rana boylii) 是一个临灭绝的物种,面临着来自Batrachochytrium dendrobatidis (Bd) 的威胁.
- 在广泛的地理范围内评估疾病驱动因素需要大规模的协作分析.
研究的目的:
- 为了研究Rana boylii中Bd感染的时空驱动因素.
- 确定Bd缓解和监测的关键时期和地点.
主要方法:
- 从博物馆标本 (1897-2005) 和现场样本 (2005-2021) 收集了2000多个数据点.
- 分析了Bd感染的流行率和9度度的负载,考虑了环境因素和宿主人口统计.
主要成果:
- 从20世纪40年代开始,观察到Bd检测的南向北传播,流行率增加和南部除.
- 确定了八个高流行度的地理集群和诸如较低的海拔,雨水占主导地位的流域,低温和低流量等因素.
- 在雄性青中发现了更高的Bd流行率,在秋季采样的幼中发现了更高的负载.
结论:
- 随着时间和空间的推移,Bd对Rana boylii种群产生了重大影响.
- 保护战略必须侧重于确定的高风险区域和时间段,以有效缓解和监测.
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