报 告 人： 吴毅湘 博士（美国中田纳西州立大学）
报告题目：A Spatial Model of Honey Bee Colony Collapse Due to Pesticide Contamination of Foraging Bees
报告时间：2019年12月24日（周二）上午10:00-11:00
报告地点：静远楼204学术报告厅
报告人简介：
吴毅湘，于2010年在中南大学获得理学学士学位，于2015年在美国路易斯安那大学获得理学博士学位。2015年7月至2016年8月在加拿大西安大略大学从事博士后研究。2016年9月至2019年7月，任美国范德堡大学助理教授(非终身制)。2019年8月，任美国中田纳西州立大学助理教授。目前，研究兴趣主要是反应扩散方程和生物数学。其研究成果已在《Nonlinear Analysis》，《Nonlinearity》，《SIAM Appl. Math》，《Bull Math Biology》，《J. Differential Equations》等国际数学杂志上发表论文10余篇。
报告摘要：
We develop a model of honey bee colony collapse based on contamination of forager bees in pesticide contaminated spatial environments. The model consists of differential and difference equations for the spatial distributions of the uncontaminated and contaminated forager bees. A key feature of the model is incorporation of the return to the hive each day of forager bees. The model quantifies colony collapse in terms of two significant properties of honey bee colonies: (1) the fraction of contaminated forager bees that fail to return home due to pesticide contamination, and (2) the fraction of forager bees in the total forager bee population that return to the sites visited on the previous day. If the fraction of contaminated foragers failing to return home is high, then the total population falls below a critical threshold and colony collapse ensues. If the fraction of all foragers that return to previous foraging sites is high, then foragers who visit contaminated sites multiple times have a higher probability of becoming contaminated, and colony collapse ensues. This quantification of colony collapse provides guidance for implementing measures for its avoidance. This is a joint work with Pierre Magaland Glenn Webb.