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Network Biology, 2013, 3(1): 29-44
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Predator's alternative food sources do not support ecoepidemics with two strains- diseased prey

Elisa Elena, Maria Grammauro, Ezio Venturino
Dipartimento di Matematica "Giuseppe Peano", Universita di Torino, Via Carlo Alberto 10, 10123 Torino, Italia

Received 24 August 2012;Accepted 29 September 2012;Published online 1 March 2013
IAEES

Abstract
An ecoepidemic model is presented, in which two diseases affect the prey. Predators are allowed to have other food sources. Equilibria are analyzed for feasibility and stability. The most striking result is that in these conditions the two strains cannot both survive in the system, contrary to what is possible to obtain, under suitable assumptions, in standard epidemic models.

Keywords ecoepidemics;epidemics;predator-prey;two strains.

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