Typically, invasive species suffer from a lack of genetic diversity compared to their source populations because populations start from a small set of founding individuals. But in a unique twist, it turns out that New Zealand’s stoat population has greater genetic diversity today than the one in Britain, posing some important questions for researches of invasive species. That’s the conclusion of University of Auckland biologist Andrew J. Veale (who is now a post-doc scholar at the University of British Columbia) and his colleagues, who have reported their findings in the journal Molecular Ecology. More here.