Convergent adaptation to a marginal habitat by homoploid hybrids and polyploid ecads in the seaweed genus Fucus

Hybridization and polyploidy are two major sources of genetic variability that can lead to adaptation in new habitats. Most species of the brown algal genus Fucus are found along wave-swept rocky shores of the Northern Hemisphere, but some species have adapted to brackish and salt marsh habitats. Us...

Full description

Bibliographic Details
Main Authors: Coyer, J. A., Hoarau, G., Pearson, G. A., Serrão, Ester, Stam, W. T., Olsen, J. L.
Format: Article in Journal/Newspaper
Language:English
Published: The Royal Society 2014
Subjects:
Adaptations
Asymmetrical hybridization
Fucus
Polyploidy
Seaweeds
Iceland
Online Access:http://hdl.handle.net/10400.1/4191
http://dx.doi.org/ 10.1098/rsbl.2006.0489
Description
Summary:Hybridization and polyploidy are two major sources of genetic variability that can lead to adaptation in new habitats. Most species of the brown algal genus Fucus are found along wave-swept rocky shores of the Northern Hemisphere, but some species have adapted to brackish and salt marsh habitats. Using five microsatellite loci and mtDNA RFLP, we characterize two populations of morphologically similar, muscoides-like Fucus inhabiting salt marshes in Iceland and Ireland. The Icelandic genotypes were consistent with Fucus vesiculosus x Fucus spiralis F1 hybrids with asymmetrical hybridization, whereas the Irish ones consisted primarily of polyploid F. vesiculosus.

Similar Items