The lack of detectable disease and limited histopathologic effects on these animals contrast dramatically with the severe disease and histopathologic changes observed in other laboratory rodents and humans, and support their role as reservoir hosts with a long-term coevolutionary
relationship to VEEV.
Geographic structure and dynamics of coevolutionary
Studies in species other than bats have examined host-virus phylogeny and identified coevolutionary
relationships (13-16) or incongruous phylogenetic patterns (17).
leucopus-associated viruses (Blue River) suggests that this coevolutionary
relationship is not absolute and that some species jumping (host-switching) may also have occurred.
relationships in two assemblages of pocket gophers and chewing lice.
Although cheatgrass seeds are also cached in this manner, this introduced plant does not share a coevolutionary
history with North American desert rodents.
In the first chapter of Molecular evolution and adaptive radiation (MEAR), Givnish outlines alternatives to adaptive radiation (non-adaptive, developmental, sexual, and coevolutionary
radiations) and demonstrates how the study of adaptive radiation provides insight into adaptation, speciation, biogeography, and historical ecology.
1997a,b), by which the same B polymorphism may pass through successive selfish and near-neutral stages as a consequence of a coevolutionary
arms race with the A chromosomes.
These represent two different coevolutionary
paths for these host/parasite relationships.
This antagonistic relationship could result in a coevolutionary
process whereby an adaptation in the plant species is followed by an adaptation in the herbivore species, and vice versa (Ehrlich & Raven, 1964).
race continues: butterfly larval adaptation to plant trichomes.
Disruptive selection on vulnerability has been shown to be capable of generating cycles in the context of coevolutionary
models (Abrams and Matsuda 1997).