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天游线路1线路2线路3学术报告-第【2021064】号
2021-10-17 11:55  

应我校天游线路1线路2线路3邀请,南京师范大学万辉副教授于2021年10月18日为我院教师和研究生讲学。欢迎天游线路1线路2线路3及全校相关教师、博士生、硕士生参加!

报告题目:Wolbachia Invasion Dynamics in a Two-Sex Mosquito Population Model

人:万辉副教授

报告人单位:南京师范大学

间:2021年10月18日(周一)上午9:30-10:30

腾讯会议:111 209 385

万辉副教授简介:南京师范大学天游线路1线路2线路3副教授、中国生物数学会理事;主要研究方向包括生物与生态数学模型研究、传染病动力学、微分方程与动力系统及其应用等;2009年博士毕业于南京师范大学,导师崔景安教授;2009年至2010年,在加拿大约克大学从事博士后研究工作,导师朱怀平教授;2017年访问美国普渡大学,合作导师冯芝兰教授;在《Journal of Theoretical Biology》、《Bulletin of Mathematical Biology》、《Mathematical Biosciences》、《Discrete and Continuous Dynamical Systems》等国际国内重要刊物上发表论文20余篇;主持国家自然科学基金面上项目1项,主持完成国家自然科学基金青年基金项目1项。

报告摘要:Mosquito-borne diseases pose a great threat to humans' health. Wolbachia is a promising biological weapon to control the mosquito population, and is not harmful to humans' health, environment, and ecology. In this talk, I’m going to talk about a stage-structure model to investigate the effective releasing strategies for Wolbachia-infected mosquitoes. Besides some key factors for Wolbachia infection, the CI effect suffering by uninfected ova produced by infected females, which is often neglected, is also incorporated. We analyze the conditions under which Wolbachia infection still can be established even if the basic reproduction number is less than unity. Numerical simulations manifest that the threshold value of infected mosquitoes required to be released at the beginning can be evaluated by the stable manifold of a saddle equilibrium, and low levels of MK effect, fitness costs, as well as high levels of CI effect and maternal inheritance all contribute to the establishment of Wolbachia-infection. Moreover, our results suggest that ignoring the CI effect suffering by uninfected ova produced by infected females may result in the overestimation of the threshold infection level for the Wolbachia invasion.

欢迎各位老师同学届时参加!

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