Right out of the gate: the genomics of Lessepsian invaders in the vicinity of the Suez Canal

Abstract Marine organisms that enter the Mediterranean from Red Sea via Suez Canal are known as Lessepsian bioinvaders. In general, genetic studies of fishes have shown little structure between and populations. Yet notable exceptions suggest importance life-history factors may influence patterns spatial variation. this study, by sampling two invasive with different life histories (the rabbitfish Siganus rivulatus filefish Stephanolepis diaspros ), we looked at evidence population selection boundary Canal), using thousands molecular markers. Results illustrate divergent patterns, in S. strong , even such small scale. We discuss differences ecological characteristics species to account for differences. addition, report face both high ( ) low gene flow, loci under were uncovered, some protein coding genes identified being involved osmoregulation, which seems be an important feature individuals crossing salinity-variable Canal. The presence populations near supports idea active essential successful invasions right out gate.