Patterns of connectivity among populations of Cherax destructor (Decapoda : Parastacidae) in western Queensland, Australia

摘要: Freshwater organisms are often hypothesized to reflect the hierarchical nature of stream channels in genetic structure their populations. However, patterns also affected by dispersal mechanism particular species and river channels. In this study, a freshwater crayfish, known have ability for terrestrial dispersal, was examined habitat where elevational differences across catchment boundaries minimal. It found that levels connectivity among populations same high, suggesting either recent or contemporary them. contrast, almost no sharing haplotypes drainage indicates limited nested clade analysis indicated that, historically, there has been movement between drainages. is suggested Cooper Murray-Darling were isolated past more recently, recolonization occurred an east-west direction from Bulloo Cooper. These movements probably wetter times when whole catchments flooded.