江苏省应用数学（中国矿业大学）中心系列学术报告
报告题目：Bifurcations of codimension 4 in a Leslie-type predator-prey model with Allee effects
报告人：向创 讲师 南京师范大学
报告时间：2026年4月19日（周日） 10:00-11:00
报告地点：腾讯会议 319 190 414
摘 要：In this talk, we consider a Leslie-type predator-prey model with simplified Holling IV functional response and Allee effects in prey. It is shown that the model can undergo a sequence of bifurcations of codimension four as the parameters vary. Moreover, strong Allee effects (M>0) (or ‘transitional Allee effects’ (M=0) with large predation rates) can cause the coextinction of both populations with some positive initial densities, while weak Allee effects (M<0) (or transitional Allee effects with small predation rates) make both populations with positive initial densities persist.