|Appears in Collections:||Computing Science and Mathematics Journal Articles|
|Peer Review Status:||Refereed|
|Title:||The effect of seasonal host birth rates on population dynamics: the importance of resonance|
|Author(s):||Ireland, Jillian M|
|Citation:||Ireland JM, Norman R & Greenman J (2004) The effect of seasonal host birth rates on population dynamics: the importance of resonance. Journal of Theoretical Biology, 231 (2), pp. 229-238. http://www.sciencedirect.com/science/article/pii/S0022519304002905; https://doi.org/10.1016/j.jtbi.2004.06.017|
|Abstract:||Many of the simple mathematical models currently in use often fail to capture important biological factors. Here we extend current models of insect-pathogen interactions to include seasonality in the birth rate. In particular, we consider the SIR model with self-regulation when applied to specific cases -- rabbit haemorrhagic disease and fox rabies. In this paper, we briefly summarize the results of the model with a constant time-independent birth rate, a, which we then replace with the time dependent birth rate a(t), to investigate how this effects the dynamics of the host population. We can split parameter space into an area in which the model without seasonality has no oscillations, in which case a simple averaging rule predicts the behaviour. Alternatively, in the area where oscillations to the equilibrium do occur in the non-seasonal model, disease persistence is more complicated and we get more complex dynamical behaviour in this case. We apply resonance techniques to discover the structure of the subharmonic modes of the SIR model with self-regulation. We then look at whether many biological systems are likely to display these "resonant" dynamics and find that we would expect them to be widespread.|
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