Differential shuffling of native genetic diversity across introduced regions in a brown alga: aquaculture vs. maritime traffic effects.

ABSTRACT: Worldwide marine invaders, such as the brown alga Undaria pinnatifida, offer challenging models for unraveling the apparent paradox of sustainable settlement of exotic species over a large spectrum of environments. Two intergenic noncoding mitochondrial loci were found to be highly informative at the within-species level. Twenty-five haplotypes were found over the whole dataset (333 base pairs, 524 individuals, and 24 populations). The native range showed striking population genetic structure stemming from low diversity within and high differentiation among populations, a pattern not observed in the introduced range of this seaweed. Contrary to classical expectations of founding effects associated with accidental introduction of exotic species, most of the introduced populations showed hig

SUBMITTER: Voisin M 

PROVIDER: S-EPMC556235 | biostudies-literature | 2005 Apr

REPOSITORIES: biostudies-literature