Evolutionary Applications

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Vol 11 (10 Issues in 2018)
Edited by: Louis Bernatchez
Online ISSN: 1752-4571
Impact Factor: 4.694

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Environment & Sustainability, Life Sciences

September 15, 2014

How Are Hybridized Species Affecting Wildlife?

Photo courtesy of Dr. Dylan Fraser


Researchers who transplanted combinations of wild, domesticated, and domesticated-wild hybridized populations of a fish species to new environments found that within 5 to 11 generations, selection could remove introduced foreign genes from wild populations that hybridized with domesticated populations.

The Evolutionary Applications study provides evidence that natural selection, over time, removes the adaptive advantages that hybridized populations experience as a result of increased genetic diversity.

A map outlining the geographic locations of the three Algonquin Park source populations used as gametic sources, the location of the hatchery where source population crosses were incubated, as well as the three experimental transplant lakes.


“The results may be useful for policy makers who classify the protection status or management practices for hybridized populations,” said senior author Dr. Dylan Fraser. “They also provide hope for wild populations currently displaying negative effects as a result of human-mediated hybridization with domesticated species.”