The effect of village structure, trait divergence and GM release regimes on the coexistence of Ae. aegypti and Ae. albopictus

村庄结构、性状差异和转基因释放制度对白伊蚊共存的影响。

• 批准号: 2424674
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2424674
• 关键词: effect; village; structure; trait; divergence

Through the diseases they carry, Ae. aegypti and Ae. albopictus have substantial burdens on global public health. Despite originating on different continents, there are regions where these two species overlap in spatial distribution, which can result in competitive exclusion, or coexistence. A mechanism regulating these coexistence patterns is reproductive interference (also called satyrisation), which is where incomplete species recognition results in heterospecifics engaging in mating activities which do not produce viable offspring and cause a fitness cost to one/ both of the species involved. In my rotation project, we developed a theoretical framework (based on modified Lotka-Volterra equations) to investigate the interaction between GM Ae. aegypti releases and the impact of reproductive interference between Ae. aegypti and Ae. albopictus populations on patterns of coexistence and exclusion. However, this model is non-spatial and thus most appropriate where the species populations are mixed and dispersed over an homogeneous space, which is not true of Ae. aegypti and Ae. albopictus populations. Thus, my initial project will be a spatially explicit extension of my rotation project, but omitting the release of GM Ae. aegypti. I plan to form a network model to examine how the structure of houses in a village impacts coexistence between Ae. aegypti and Ae. albopictus. I will then conduct fieldwork to determine whether Ae. aegypti and Ae. albopictus diverge in their peak biting times to reduce the fitness cost associated with reproductive interference. The final section of my thesis will expand the initial theoretical model to include different spatial release regimes of self-limiting GM Ae. aegypti. Thus, my thesis will extend our knowledge of the ecology of coexistence between Ae. aegypti and Ae. albopictus, and will be relevant to policy decisions on Aedes control measures.

通过它们携带的疾病，Ae。埃及伊蚊和伊蚊。白纹伊蚊对全球公共卫生造成重大负担。尽管起源于不同的大陆，但这两种物种在空间分布上有重叠的区域，这可能导致竞争排斥或共存。调节这些共存模式的一种机制是生殖干扰（也称为满足），即不完全的物种识别导致异种参与交配活动，而这些交配活动无法产生可存活的后代，并导致一个或两个相关物种的适应成本。在我的轮换项目中，我们开发了一个理论框架（基于修改的Lotka-Volterra方程）来研究GM Ae之间的相互作用。埃及伊蚊的释放及繁殖干扰对埃及伊蚊的影响。埃及伊蚊和伊蚊。白纹伊蚊种群的共存与排斥模式。然而，这个模型是非空间的，因此最适合于物种种群混合和分散在一个均匀的空间，而不是伊蚊。埃及伊蚊和伊蚊。蚊数量。因此，我的初始项目将是我的轮换项目的空间明确扩展，但省略了GM Ae的发布。蚊。我计划形成一个网络模型来研究一个村庄的房屋结构如何影响Ae和Ae之间的共存。埃及伊蚊和伊蚊。蚊。然后我将进行实地调查，以确定Ae。埃及伊蚊和伊蚊。白纹伊蚊在其叮咬高峰期分化，以减少与生殖干扰相关的适应成本。本文的最后一部分将扩展初始理论模型，以包括自限GM Ae的不同空间释放机制。蚊。因此，我的论文将扩展我们对Ae之间共存生态学的认识。埃及伊蚊和伊蚊。并将与伊蚊控制措施的政策决定相关。