Ben Ashby (PI)
Department of Mathematics, SFU
I am a mathematical biologist interested in the ecology and (co)evolution of hosts and their parasites. I use mathematical models and simulations to study how parasites spread through populations and evolve traits such as infectivity and virulence, and in turn how this affects the evolution of host traits such as resistance or mating strategies.
Post doctoral researchers
I am a mathematical biologist who is interested in population dynamics and epidemiology, and applying stochasticity to mathematical models. My PhD centred on the development of “hybrid methods” and their implementation on reaction-diffusion systems. Currently, my work focusses on the investigation of within-host dynamics and the effects that these have on the evolution of pathogens along the mutualism-parasitism continuum, together with a small amount of work modelling some aspects of the COVID-19 pandemic. Outside of maths, I attempt to play football, enjoy taking walks and singing.
My research investigates the ways in which pathogens and their hosts co-evolve to create different age-structured patterns of immune responses in the host. At the moment, I am focussing on the differences between disease resistance in juveniles and adults. I completed my undergraduate degree in Mathematics at Merton College, Oxford, with my Master’s project exploring the effects of host heterogeneities on the spread of infectious diseases. In my spare time, I enjoy playing the piano and looking after my small flock of sheep.
My research is focused on coevolution between hosts and STIs using mathematical models and computer simulations. I have recently finished my undergraduate degree, (MMath) Mathematics with International Study, at the University of Exeter. During this time I studied at the University of New South Wales in Sydney, where my interest in mathematical biology was sparked. I also completed a research internship at the University of Exeter, where I looked into how the heterogeneity of neuronal cells could be modelled by Hodgkin-Huxley computational models. I spend a lot of my free time kayaking, mountain walking, and swimming.
I am interested in using mathematics to help develop our understanding of eco-evolutionary systems, especially using computational methods. My current research investigates the coevolutionary dynamics of systems with three species involved; at the moment I am considering a Host – Parasite – Hyperparasite system. I completed my undergraduate degree in Mathematics and Physics (MMath) at the University of York in 2018 and my Master’s project focused on the swimming of microorganisms. In my spare time I like to read, take latin and ballroom dancing lessons, and play the niche sport of underwater hockey.
From Fall 2023-
I am a USRA working on a summer research project about modelling evolution in the host microbiome. Currently, I am in the Mathematics and Computing Science BSc program at Simon Fraser University. I’m interested to learn more about mathematical biology. My spare time is usually spent cycling, reading manga, and playing trading card games.
Project: Resistance-conferring defensive symbionts and the evolution of parasite virulence
*Yvonne Krumbeck (PhD, 2022).
*Halimubieke Naerhulan (PhD, 2020). Next position: Teaching Fellow, University of Bath
Hettie Chapman (MMath, 2021). Next position: PhD candidate at Heinrich Heine Universität
Tom Griffiths (MMath, 2020). Next position: Data Analyst at Second Nature
Tim Coulter (MMath, 2020). Next position: Software Engineer at Ocado
- Alex Best (Mathematics, University of Sheffield)
- Mike Boots (Integrative Biology, UC Berkeley)
- Emme Bruns (Biology, University of Maryland)
- Angus Buckling (Biosciences, University of Exeter)
- George Constable (Mathematics, University of York)
- Kevin Foster (Zoology, University of Oxford)
- Sunetra Gupta (Zoology, University of Oxford)
- Greg Hurst (Integrative Biology, Liverpool)
- Ryosuke Iritani (iTHEMS RIKEN, Japan)
- Kayla King (Zoology, University of Oxford)
- Hanna Kokko (Evolutionary Biology and Environmental Studies, University of Zurich)
- Allison Shaw (Ecology, Evolution & Behavior, University of Minnesota)
- Stineke van Houte (Biosciences, University of Exeter)
- Edze Westra (Biosciences, University of Exeter)
Honorary group members
Herbert ‘Herbie’ Puppington
I joined the
pack group in August 2020. I’m still young, but I’m growing fast and will be working hard on my recall skills and house training over the next few months. I have broad research interests and am keen to investigate anything new.