The magnitude of local adaptation under genotype-dependent dispersal.

ABSTRACT: Dispersal moves individuals from patches where their immediate ancestors were successful to sites where their genotypes are untested. As a result, dispersal generally reduces fitness, a phenomenon known as "migration load." The strength of migration load depends on the pattern of dispersal and can be dramatically lessened or reversed when individuals move preferentially toward patches conferring higher fitness. Evolutionary ecologists have long modeled nonrandom dispersal, focusing primarily on its effects on population density over space, the maintenance of genetic variation, and reproductive isolation. Here, we build upon previous work by calculating how the extent of local adaptation and the migration load are affected when individuals differ in their dispersal rate in a genotype-depend

SUBMITTER: Bolnick DI 

PROVIDER: S-EPMC3867907 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature