Abstract
We have constructed a mathematical model of population dynamics for a specific marine parasitic-castration system, the Hemioniscus-Chthamalus association. The assumptions underlying the model appear consistent with empirical observations. Equilibria, positivity criteria, and stability conditions are derived for an unparasitized barnacle population, a parasite population with a constant number of hosts, and a two-species dynamic model. We have analyzed the model to assess the effect that the parasite population has on the population dynamics of the host, the conditions that result in enzootic or epizootic levels of prevalence, and the conditions under which parasites can invade or become extinct within a barnacle community. We have also used the model to generate a plausible hypothesis to explain the prevalence differences among sympatric host species and biogeographic prevalence patterns.
Published Version
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