A genome-wide investigation of the worldwide invader Sargassum muticum shows high success albeit (almost) no genetic diversity.

ABSTRACT: Twenty years of genetic studies of marine invaders have shown that successful invaders are often characterized by native and introduced populations displaying similar levels of genetic diversity. This pattern is presumably due to high propagule pressure and repeated introductions. The opposite pattern is reported in this study of the brown seaweed, Sargassum muticum, an emblematic species for circumglobal invasions. Albeit demonstrating polymorphism in the native range, microsatellites failed to detect any genetic variation over 1,269 individuals sampled from 46 locations over the Pacific-Atlantic introduction range. Single-nucleotide polymorphisms (SNPs) obtained from ddRAD sequencing revealed some genetic variation, but confirmed severe founder events in both the Pacific and Atlan

SUBMITTER: Le Cam S 

PROVIDER: S-EPMC7045713 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature