Olivieri Isabelle
Institut des Sciences de l'Evolution, Université Montpellier 2, CC 065, Place Eugène Bataillon, 34095 Montpellier cedex 05, France.
Trends Ecol Evol. 2009 Jun;24(6):289-92. doi: 10.1016/j.tree.2009.01.015. Epub 2009 May 4.
Human-induced and natural range expansion of species are expected to lead to different patterns of genetic diversity, which might themselves be trait dependent. Recent studies examined the molecular and quantitative genetic variation following the range expansion of three plant species. The results suggest that contrasting diversity patterns among species reflect how range expansion has occurred and the level of fragmentation of the original habitat. Unexpectedly, even introductions from a homogeneous environment do not preclude a species from adapting to a new environment and becoming invasive.
预计物种的人为和自然范围扩张会导致不同的遗传多样性模式，而这些模式本身可能取决于性状。最近的研究考察了三种植物物种范围扩张后的分子和数量遗传变异。结果表明，物种间不同的多样性模式反映了范围扩张的发生方式以及原始栖息地的破碎化程度。出乎意料的是，即使是来自同质环境的引入也不能阻止一个物种适应新环境并成为入侵物种。
