报告人：徐匡奕 博士

日期：2025年3月13日

腾讯会议号：326-849-334

时间：上午10:00-11:30

报告内容简介

After an environmental shift inducing demographic decline, populations may avoid extinction via adaptive evolution, an eco-evo process called “evolutionary rescue”. In conservation it is desired,but in medicine it is often not.

The severity of environmental shifts often affects both demography and selection, obscuring the consequences on rescue. For example, while increasing drug concentration can more quickly eliminate susceptible strains, it often leads to a greater selective advantage of resistant strains. Thus, it remains controversial whether higher drug concentrations will inhibit resistance emergence. Moreover, pathogens, insects, and weeds vary greatly in their modes of reproduction, which can critically determine the likelihood of rescue by influencing genetic processes.

In this talk, I will use mathematical models to clarify the conditions when increased severity of environmental shifts promotes rescue and the impacts of reproductive modes on extinction risk. The results offer insights into how ecological and evolutionary processes interact to affect population persistence and improve the management of resistance evolution.

报告人简介

徐匡奕，博士，现为多伦多大学生态学与进化生物学系EEB博士后，2023年于北卡罗来纳大学教堂山分校生物学系获得博士学位。研究致力于通过数学模型、计算模拟和数据分析等方法，综合遗传学、生态学和进化生物学视角，对生物现象提供普适性和机制性的原理，并为实践领域提供具有应用价值的预测与指导。

目前主要研究方向为：繁殖系统的演化及其对种群存续的影响、进化拯救、性选择、植物开花策略等。研究成果发表于Evolution, The American Naturalist, Evolution Letters, Journal of Evolutionary Biology 等杂志。