期刊
BIOLOGY LETTERS
卷 2, 期 3, 页码 405-408出版社
ROYAL SOCIETY
DOI: 10.1098/rsbl.2006.0489
关键词
adaptations; asymmetrical hybridization; Fucus; polyploidy; seaweeds
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, muscoideslike Fucus inhabiting salt marshes in Iceland and Ireland. The Icelandic genotypes were consistent with Fucus vesiculosus x Fucus spiralis F, hybrids with asymmetrical hybridization, whereas the Irish ones consisted primarily of polyploid F. vesiculosus.
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