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。了解促进生殖的行为和机制可提供关于人口如何应对环境变化的信息。这在具有温度依赖性性别决定的物种中尤其重要，因为后代的性别是由环境条件决定的。在这个项目中，我将调查红海龟（Caretta caretta）的可操作性比（OSR）在整个交配季节如何变化，一雄交配系统对多父权率的影响，确定一雄交配系统的影响对佛得角群岛多父权率的影响。具体来说，我将i）描述的变化，在成年人的性别比和OSR使用无人驾驶飞行器（UAV）内和繁殖季节之间，ii）使用微卫星分析确定离合器的多父性率iii）描述的成本效益平衡一妻多夫与一妻多夫使用大规模孵化场，iv）确定主要和操作性别比之间的相关性。