无症状的病毒感染与野生子种群的宿主生殖产量较低有关
Andrzej Zalewski1, Jenni M E Virtanen2,3, Hanna Zalewska4
1Mammal Research Institute, Polish Academy of Sciences, 17-230, Białowieża, Poland. zalewski@ibs.bialowieza.pl.
Scientific reports
|June 9, 2023
概括
野生鹿雌性感染阿列乌提亚鱼疾病病毒 (AMDV) 显著减少了8%的 litter 规模和14%的后代存活率,影响了野生种群动态.
科学领域:
- 野生动物病毒学 病毒学
- 生殖生态学 生殖生态学
- 人口动态 人口动态
背景情况:
- 地方性病毒可以影响野生动物群体,而不会引起明显的疾病.
- 阿勒岛病病毒 (AMDV) 在全球的美国 (Neogale vison) 种群中普遍存在.
- 了解对野生动物繁殖的亚临床病毒影响对于保护至关重要.
研究的目的:
- 为了研究AMDV感染对野生美国子繁殖成功的影响.
- 量化AMDV对子大小和后代存活率的影响.
主要方法:
- 一个野生的美国子种群的实地研究.
- 在AMDV感染和未感染的雌性子之间比较生殖参数 (子大小,存活率).
- 统计分析以确定AMDV感染对生殖产出的意义.
主要成果:
- 与未感染的雌性 (6.3个幼) 相比,感染AMDV的雌性产生的子明显较小 (5.8个幼),减少了8%.
- 在感染和未感染组之间没有观察到整个子生存率的显著差异.
- 后代的生存率到秋天是14%低于从感染的雌性子.
结论:
- 感染AMDV会对美国子生殖产生负面影响,主要是通过减少后代的存活率.
- 亚临床病毒感染可能是野生动物种群动态的重要驱动因素.
- 这项研究强调了病毒从家禽传播到野生动物群体的潜在威胁.
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