You are here: Home
/ Publication Information
Title: Movement behavior explains genetic differentiation in American black bears
Author: Cushman, Samuel A; Lewis, Jesse S.
Source: Landscape Ecology. 25:1613-1625.
Publication Series: Journal/Magazine Article (JRNL)
Description: Individual-based landscape genetic analyses provide empirically based models of gene flow. It would be valuable to verify the predictions of these models using independent data of a different type. Analyses using different data sources that produce consistent results provide strong support for the generality of the findings. Mating and dispersal movements are the mechanisms through which gene flow operates in animal populations. The best means to verify landscape genetic predictions would be to use movement data to independently predict landscape resistance. We used path-level, conditional logistic regression to predict landscape resistance for American black bear (Ursus americanus) in a landscape in which previous work predicted population connectivity using individual-based landscape genetics. We found consistent landscape factors influence genetic differentiation and movement path selection, with strong similarities between the predicted landscape resistance surfaces. Genetic differentiation in American black bear is driven by spring movement (mating and dispersal) in relation to residential development, roads, elevation and forest cover. Given the limited periods of the year when gene flow events primarily occur, models of landscape connectivity should carefully consider temporal changes in functional landscape resistance.
Keywords: movement behavior, path-level analysis, connectivity, landscape genetics, black bear, Ursus americanus
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Cushman, Samuel A,; Lewis, Jesse S. 2010. Movement behavior explains genetic differentiation in American black bears. Landscape Ecology. 25:1613-1625.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility