Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Trends Ecol Evol. 2010 Sep;25(9):530-6. doi: 10.1016/j.tree.2010.06.005. Epub 2010 Jul 2.

Hybrid fitness across time and habitats.

Author information

  • 1Department of Genetics, University of Georgia, Athens, GA 30602, USA. arnold@plantbio.uga.edu

Abstract

There has been considerable debate about the role of hybrids in the evolutionary process. One question has involved the relative fitness of hybrid versus non-hybrid genotypes. For some, the assumption of lower hybrid fitness continues to be integral to their concept of species and speciation. In contrast, numerous workers have suggested that hybrid genotypes might demonstrate higher relative fitness under various environmental settings. Of particular importance in deciding between these opposing hypotheses are long-term analyses coupling ecological and genetic information. Although currently rare, such analyses have provided a test of the fitness of hybrid genotypes across generations and habitats and their role in adaptation and speciation. Here we discuss examples of these analyses applied to viruses, prokaryotes, plants and Darwin's Finches.

Copyright © 2010 Elsevier Ltd. All rights reserved.

PMID:
20598770
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk