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

繁殖对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种群如何对环境变化作出反应的信息。这在温度依赖性别决定的物种中尤为重要，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）的有效性别比率（OSR）在整个交配季节是如何变化的，一妻多夫交配制度对整个佛得角群岛的多父性比率的影响。具体来说，我将I)使用无人机（uav）描述在繁殖季节内和之间的成年性比例和OSR的变化，ii)使用微卫星分析确定多父性的比率，iii)使用大型孵化场描述一妻多夫制与一妻多夫制的成本效益平衡，iv)确定主要性比例和操作性比例之间的相关性。

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.