社会老龄化可以保护群体生活的灵长类动物免受传染病的影响
Erin R Siracusa1, Melissa A Pavez-Fox2, Josué E Negron-Del Valle3
1School of Psychology, Centre for Research in Animal Behaviour, University of Exeter, Exeter, UK.
bioRxiv : the preprint server for biology
|April 1, 2024
概括
老年人可能会从减少的社会联系中受益,以减轻传染病风险. 这种"社会衰老"现象提供了对病原体的保护,特别是当感染随着年龄的增长而恶化时.
科学领域:
- 进化生物学是进化的生物学.
- 流行病学 流行病学
- 灵长类的社会行为.
背景情况:
- 社会生活提供了好处,但也带来了代价,例如增加传染病风险.
- 社会性成本和收益的平衡可能会在一个人的一生中发生变化,随着年龄的增长影响社会行为.
研究的目的:
- 调查社会老龄化如何影响群体生活灵长类动物感染性疾病相关的成本.
- 模拟与年龄相关的社会联系变化的流行病学后果.
主要方法:
- 来自群体生活的灵长类动物物种的综合实证数据与流行病学建模.
- 模拟了假设的流行病原体在不同年龄组的社交网络上的影响.
主要成果:
- 老年人由于社会联系减少 (社会衰老) 导致假设病原体的成本较低.
- 当感染严重程度随着年龄的增长而增加时,这种保护性益处最为明显.
- 社会衰老的优势与病原体的传染性和感染持续时间有所不同,与减少交互频率和网络嵌入程度有关,而不是伴侣数量.
结论:
- 社会衰老的特点是老年人社会联系程度下降,这可以为预防传染病提供显著的优势.
- 病原体可能在塑造自然种群中社会衰老的进化动态方面发挥作用.
- 了解社会衰老的流行病学对于理解社会行为演变至关重要.
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