Abstract
Some models are presented for the dynamics of a host population with two parasite species. The models differ in two main aspects: whether they include direct competition among parasites and whether the analysis is based on some approximation and which one. If the analysis is not constrained by a priori assumptions about parasite distributions, it is found that species coexistence is very unlikely without some kind of direct competition among parasites; on the other hand, coexistence generally occurs when inter-specific competition is lower than intraspecific, similarly to standard theory for free-living species. If hosts differ in their predisposition to infection, but not in an identical way towards the two parasite species, then species coexistence becomes feasible even if inter-specific competition is as strong as intraspecific; in this case, coexistence becomes easier as the variance in predisposition increases. These models do not yield universal predictions for patterns of parasite distributions; an analysis of the mechanisms of interaction in each specific system is necessary for that.
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Pugliese, A. (2010). Modelling Multi-Species Parasite Transmission. In: Michael, E., Spear, R.C. (eds) Modelling Parasite Transmission and Control. Advances in Experimental Medicine and Biology, vol 673. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6064-1_3
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DOI: https://doi.org/10.1007/978-1-4419-6064-1_3
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