Evaluating the effect of temporal and spatial change in a species with temperature dependent sex determination: from primary to operational sex ratio

评估具有温度依赖性性别决定的物种的时间和空间变化的影响：从初级性别比到操作性性别比

• 批准号: 2061795
• 金额: --
• 依托单位: Queen Mary University of London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2061795
• 关键词: Evaluating; effect; temporal; spatial; change

Reproduction is essential for the continuation and success of all species. Understanding the behaviours and mechanisms which facilitate reproduction provides information on how populations may respond to environmental change. This is particularly important in species with temperature-dependent sex determination, as the sex of offspring is determined by environmental conditions. During this project, I will investigate how the operational sex ratio (OSR) of loggerhead sea turtles (Caretta caretta) changes throughout the mating season, impact of polyandrous mating systems on the rate of multiple paternity across the determining the impact of polyandrous mating systems on the rate of multiple paternity across the archipelago of Cape Verde. Specifically, I will i) describe changes in the adult sex ratio and OSR using unmanned aerial vehicles (UAVs) within and between breeding seasons, ii) determine the rate of multiple paternity in clutches using microsatellite analysis iii) describe the cost-benefit balance of polyandry vs monandry using a largescale hatchery, iv) determine the correlation between primary and operational sex ratio.

繁殖对于所有物种的延续和成功至关重要。了解促进繁殖的行为和机制可以提供有关种群如何应对环境变化的信息。这对于性别决定取决于温度的物种尤其重要，因为后代的性别是由环境条件决定的。在这个项目中，我将研究红海龟（Caretta caretta）的操作性性别比（OSR）在整个交配季节如何变化，一妻多夫交配系统对多重父子关系的影响，以确定一妻多夫交配系统对多父子关系的影响。佛得角群岛的多重亲子鉴定率。具体来说，我将 i) 使用无人机 (UAV) 描述繁殖季节内和繁殖季节之间成年性别比例和 OSR 的变化，ii) 使用微卫星分析确定多胎亲子鉴定率 iii) 描述成本效益平衡一妻多夫制与使用大型孵化场的一妻多夫制，iv) 确定初级性别比和运营性别比之间的相关性。