Life history consequences of growth variation

生长变异的生活史后果

• 批准号: NE/C004353/1
• 负责人: Pat Monaghan
• 金额: $ 36.17万
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FC004353%2F1
• 关键词: Life; history; consequences; growth; variation

It is now widely appreciated that, while animals may appear to recover from periods of poor food quality or quantity experienced in early development, adverse effects may occur later in adult life. Such effects can influence the performance of complete cohorts of animals, and have important consequences for population dynamics. The reasons why such delayed effects occur across the animals' lifetimes are poorly understood. Following a period of shortage, animals often grow rapidly and may appear to catch-up. The period of early poor early nutritional itself, or problems associated with subsequent accelerated growth, could potentially be responsible. These have not been separated. However, it is important that we understand whether compensatory growth does carry long-term costs, since this has widespread ramifications for our understanding of the evolution of growth rate (optimised or maximised?) and life history strategies. We will study the long-term consequences of variation in early growth trajectories, using the zebra finch as a study species. We will examine effects at the levels of DNA, cells, overall metabolism and senescence of the whole organism.

现在人们普遍认识到，虽然动物可能会从早期发育中经历的食物质量或数量差的时期中恢复过来，但在成年后可能会发生不良影响。这种效应会影响整个动物群的表现，并对种群动态产生重要影响。这种延迟效应在动物一生中发生的原因还知之甚少。在一段时间的短缺之后，动物通常会迅速生长，并可能会迎头赶上。早期营养不良本身的时期，或与随后的加速生长相关的问题，可能是负责任的。这些没有分开。然而，重要的是，我们要了解补偿性增长是否会带来长期成本，因为这对我们理解增长率的演变（优化或最大化？）和生活史策略。我们将研究早期生长轨迹变化的长期后果，使用斑胸草雀作为研究物种。我们将研究在DNA，细胞，整体代谢和整个生物体衰老水平的影响。