"Parasite and Host."

Parasite and host elemental content and parasite effects on host nutrient excretion and metabolic rate

Ecological stoichiometry uses the mass balance of elements to predict energy and elemental fluxes across different levels of ecological organization. A specific prediction of ecological stoichiometry is the growth rate hypothesis (GRH), which states that organisms with faster growth or reproductive rates will require higher phosphorus content for nucleic acid and protein synthesis. Although par...

Parasite-host Interactions

Host – Parasite Genetics

Host-parasite interactions often have complex dynamics. At the level of individual allele frequencies, the dynamics are difficult to predict and difficult to measure. However, aggregate properties of polymorphism, such as allelic diversity or the frequency of resistance, may be relatively easy to work with. I study this problem with computer simulations of a host-parasite model. In one example,...

Host – Parasite Genetics

The published article may differ slightly from this version. Please check the published version for quotation and citation. Introduction Host-parasite diversity can be described in two different ways. The first is simply the observed variability among the hosts and parasites in a particular population. For example, Burdon and Jarosz (1991) classified 67 wild flax plants into 10 distinct resista...

Host age modulates within-host parasite competition.

In many host populations, one of the most striking differences among hosts is their age. While parasite prevalence differences in relation to host age are well known, little is known on how host age impacts ecological and evolutionary dynamics of diseases. Using two clones of the water flea Daphnia magna and two clones of its bacterial parasite Pasteuria ramosa, we examined how host age at expo...