Local migration promotes competitive restraint in a host-pathogen 'tragedy of the commons'

Article Abstract:

Migration pattern affects both coexistence and evolution and promotes competitive restraint within a community of bacterial hosts and viral pathogens, exhibiting distinct pathogen strategies for different patterns of migration, defining a 'tragedy of commons'. Prudent phage is more productive when alone and dominant in spatially restricted migration, while rapacious phage displaces prudent variants for host resources and evolves under unrestricted migration.

Minnesota, Analysis, Host-bacteria relationships, Bacteriophage typing, Probabilistic automata

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Adaptation varies through space and time in a coevolving host-parasitoid interaction

Article Abstract:

The geographic mosaic theory of coevolution incorporates this idea by proposing that spatial variation in natural selection and gene flow across a landscape can shape local coevolutionary dynamics. Gene flow across a spatially structured landscape alters coevolution of parasitoids and their hosts and that the resulting patterns of adaptation can fluctuate in both space and time.

Adaptation (Biology), Evolutionary adaptation, Varieties, Spatial behavior in animals, Animal spatial behavior, Animal spatial behaviour, Gene flow

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Gene-for-gene coevolution between plants and parasites

Article Abstract:

Gene-for-gene coevolution between plants and their parasites, resulting from metapopulation structure, may be just as important as local natural selection in determining the mutual adaptation of host and parasite. In addition, the geographic organization of a population seems to influence which genes within it are favored.

Environmental aspects, Genetic aspects, Plant-pathogen relationships, Natural selection, Plant populations

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