本地物种中的流行病会影响物种入侵的结果
Paradyse E Blackwood1, Kacie L Jonasen2, Brandon D Hoenig3,4
1Department of Biological Sciences, Purdue University, 915 Mitch Daniels Blvd, West Lafayette, IN, 47907, USA. pblackwo@purdue.edu.
Oecologia
|August 24, 2023
概括
由共享寄生虫引起的本地物种流行病的时间,显著影响入侵物种的成功和本地种群. 了解这些动态对于预测入侵结果至关重要.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 寄生虫学的寄生虫学
背景情况:
- 侵入性物种显著改变本地生态系统.
- 本地和入侵物种之间的共享寄生虫可以影响入侵动态.
- 本地物种流行病在调解入侵影响中的作用需要进一步调查.
研究的目的:
- 研究由一般性真菌寄生虫引起的本地动物浮游生物流行病的发生率和时间如何影响侵入性动物浮游生物的成功.
- 确定寄生虫流行病对本地物种密度和感染流行率的影响.
- 评估入侵物种引入时间相对于本地流行病的影响.
主要方法:
- 实验室微观宇宙实验使用本地 (Daphnia dentifera) 和入侵性 (Daphnia lumholtzi) 动物浮游生物.
- 本地物种暴露于各种真菌寄生虫 (Metschnikowia bicuspidata) 接种剂 (没有,低,高).
- 侵入性物种在两个时间点的引入:在本地物种流行之前或期间.
主要成果:
- 与未感染的治疗相比,使用寄生虫治疗的侵袭性物种密度更高.
- 侵入性休息卵只在未受感染的治疗中检测到.
- 当寄生虫存在时,本地物种密度最低,而入侵物种是在本地流行病期间引入的.
- 当入侵物种在流行病后期引入时,本地感染的流行率更高.
结论:
- 与本地物种流行病相比,入侵的时间可以改变入侵物种的成功和影响.
- 本地物种流行病的发生和时间在调节生物入侵的影响方面发挥着至关重要的作用.
- 寄生虫介导的相互作用是入侵物种生态成功的重要因素.
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