Spatial sorting promotes the spread of maladaptive hybridization

Trends in Ecology and Evolution
By: , and 

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Abstract

Invasive hybridization is causing loss of biodiversity worldwide. The spread of such introgression can occur even when hybrids have reduced Darwinian fitness, which decreases the frequency of hybrids due to low survival or reproduction through time. This paradox can be partially explained by spatial sorting, where genotypes associated with dispersal increase in frequency at the edge of expansion, fueling further expansion and allowing invasive hybrids to increase in frequency through space rather than time. Furthermore, because all progeny of a hybrid will be hybrids (i.e., will possess genes from both parental taxa), nonnative admixture in invaded populations can increase even when most hybrid progeny do not survive. Broader understanding of spatial sorting is needed to protect native biodiversity.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Spatial sorting promotes the spread of maladaptive hybridization
Series title Trends in Ecology and Evolution
DOI 10.1016/j.tree.2015.05.008
Volume 30
Issue 8
Year Published 2015
Language English
Publisher Elsevier Science Publishers B.V.
Publisher location Amsterdam
Contributing office(s) Northern Rocky Mountain Science Center
Description 7 p.
First page 456
Last page 462
Online Only (Y/N) N
Additional Online Files (Y/N) N