Understanding the consequences of population bottlenecks and long-term captivity on the phenotype and recovery potential of extinct-in-the-wild bird

了解种群瓶颈和长期圈养对野生灭绝鸟类表型和恢复潜力的影响

• 批准号: 2547081
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2547081
• 关键词: Understanding; consequences; population; bottlenecks; long

Title: Understanding the consequences of population bottlenecks and long-term captivity on the phenotype and recovery potential of extinct-in-the-wild bird species. Executive summary: Population bottlenecks occur when a small number of individuals split off to form a 'founder population'. They can happen due to natural events such as island colonisation, or after severe population declines that require conservation action such as translocations into captivity, population reintroductions or assisted colonisations. Due to their small size, founder populations are susceptible to losses in variation and genetic effects such as strong genetic drift and inbreeding. My project investigates the consequences of bottlenecks and long-term captivity on three extinct-in-the-wild species of high conservation concern, the sihek (Guam kingfisher), Socorro dove and Vietnam pheasant, all of which had small founding populations. I use morphometric measurements and reproductive success data to determine phenotypic change in these species during initial bottleneck events and over subsequent time spent in captivity. My project will benefit understanding of the phenotypic consequences of population bottlenecks and long-term captivity on extinct-in-the-wild species and aims to determine how these consequences might translate into impacts on species recovery potential. Results will inform future conservation strategies when rescuing species into captivity and planning conservation translocations.

职务名称：了解种群瓶颈和长期圈养对野生鸟类的表型和恢复潜力的影响。 执行摘要：当少数个体分裂形成“创始人种群”时，就会出现种群瓶颈。它们可能是由于自然事件，如岛屿殖民，或在严重的人口下降，需要保护行动，如迁移到圈养，人口重新引入或协助殖民。由于其规模小，创始人群体容易受到变异和遗传效应的影响，如强烈的遗传漂变和近亲繁殖。我的项目调查了瓶颈和长期圈养对三种高度保护的野生物种的影响，sihek（关岛翠鸟），Socorro鸽子和越南野鸡，所有这些物种的创始种群都很小。我使用形态测量和繁殖成功的数据，以确定在这些物种的表型变化在最初的瓶颈事件，并在随后的时间花在圈养。我的项目将有助于理解人口瓶颈和长期圈养对野生物种的表型后果，并旨在确定这些后果如何转化为对物种恢复潜力的影响。结果将告知未来的保护策略时，拯救物种圈养和规划保护易位。