Landscape connectivity and genetic structure in a mainstem and a tributary stonefly

Understanding how environmental variation influences population genetic structure can help predict how environmental change influences population connectivity, genetic diversity, and evolutionary potential. We used riverscape genomics modelling to investigate how climatic and habitat variables relate to patterns of genetic variation in two stonefly species, one from mainstem river habitats (Sweltsa coloradensis) and one from tributaries (Sweltsa fidelis) in 40 sites in northwest Montana, USA.

阐明环境变异如何影响种群遗传结构，有助于预测环境变化对种群连通性、遗传多样性及进化潜力的影响。本研究采用河流景观基因组学（riverscape genomics）建模方法，针对美国西北部蒙大拿州境内40个采样点的两种石蝇开展研究，探讨气候与生境变量如何与遗传变异模式相关联：其中一种石蝇（Sweltsa coloradensis）栖息于干流河道生境，另一种（Sweltsa fidelis）则分布于支流生境。