ATTENTION: The software behind KU ScholarWorks is going to be upgraded to a new version toward the end of July. Starting July 15th, users will not be able to log in to the system until the new version is in place. Searching for articles and opening files will continue to work while the system is being updated. If you have any questions, please contact Marianne Reed at .

Show simple item record

dc.contributor.authorPeterson, A. Townsend
dc.identifier.citationPeterson, A. Townsend. (1991). "Gene Flow in Scrub Jays: Frequency and Direction of Movement." Condor, 93(4):926-934.
dc.description.abstractBased on strong differences in plumage coloration between coastal California (californica subspecies group) and Great Basin (woodhousesii subspecies group) populations of Scrub Jays (Aphelocoma coerulescens), museum specimens representing gene flow between the two forms are identified. A total of 27 examples of apparent genetic exchange between two forms (individuals of one subspecies group taken within the range of the other) is documented. Immigration rates are on the order of one per hundred or one per thousand individuals, a rate sufficient to prevent differentiation by genetic drift alone if effective population sizes are in the range of 100-550 individuals. Gene flow east-to-west across the Mojave Desert is two to seven times stronger than west-to-east movement. This directional bias has theoretical implications because an important assumption (symmetry of gene flow patterns) of most theoretical treatments of the effects of gene flow is violated. If effective population sizes are comparable in the two forms, then the bias in gene flow should lead to an overall greater rate of differentiation in the genetically more isolated woodhouseii populations.en_US
dc.publisherUniversity of California Pressen_US
dc.subjectGene flowen_US
dc.subjectpopulation differentiationen_US
dc.subjectScrub Jayen_US
dc.titleGene Flow in Scrub Jays: Frequency and Direction of Movementen_US
kusw.kuauthorPeterson, A. Townsend
kusw.kudepartmentEcology and Evolutionary Biologyen_US
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item meets KU Open Access policy criteria.

Files in this item


This item appears in the following Collection(s)

Show simple item record