The combined effects of pathogens and predators on insect outbreaks

Article Abstract:

The economic damage caused by episodic outbreaks of forest-defoliating insects is researched. The insect outbreaks, which are explained by a model, includes both a generalist predator and a specialist pathogen that causes defoliator densities to fluctuate erratically between an equilibrium maintained by the predator and cycles driven by the pathogen.

Analysis, Environmental aspects, Insect pests, Defoliation

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Dynamics of disease resistance polymorphism at the Rpm1 locus of Arabidopsis

Article Abstract:

The arms-race model was tested in Arabidopsis thaliana via analysis of sequences flanking Rpm1. The arms-race hypothesis is rejected, supporting instead a trench warfare hypothesis, where advances and retreats of resistance-allele frequency maintain variations for disease resistance as a dynamic polymorphism.

Evolution (Biology), Evolution, Arabidopsis thaliana

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Managing foot-an-mouth: The science of controlling disease outbreaks

Article Abstract:

The science of controlling disease outbreaks is discussed in the context of the recent foot-and-mouth epidemic, and the significant of livestock movements.

Foot-and-mouth disease, Foot and mouth disease

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