caa a22 4500 445892846 CHVBK 20180317145622.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10750-010-0555-6 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0555-6 Population genetic structure of the round goby in Lake Michigan: implications for dispersal of invasive species [Elektronische Daten] [Elizabeth LaRue, Carl Ruetz III, Michael Stacey, Ryan Thum] Understanding subsequent dispersal of non-native species following introduction is important for predicting the extent and speed of range expansion and is critical for effective management and risk assessment. Post-introduction dispersal may occur naturally or via human transport, but assessing the relative contribution of each is difficult for many organisms. Here, we use data from seven microsatellite markers to study patterns of dispersal and gene flow among 12 pierhead populations of the round goby (Neogobius melanostomus) in Lake Michigan. We find significant population structure among sampling sites within this single Great Lake: (1) numerous populations exhibited significant pairwise F ST and (2) a Bayesian assignment analysis revealed three distinct genetic clusters, corresponding to different pierhead locations, and genetic admixture between these clusters in the remaining populations. Genetic differentiation (F ST) is generally related to geographic distance (i.e., isolation by distance), but is periodically interrupted at the scale of Lake Michigan due to gene flow among geographically distant sites. Moreover, average genetic differentiation among populations exhibit a significant, negative correlation with the amount of shipping cargo at ports. Our results, therefore, provide evidence that genetic structure of the round goby in Lake Michigan results from limited natural dispersal with frequent long-distance dispersal through anthropogenic activities such as commercial shipping. Our study suggests that while round gobies can undoubtedly disperse and found new populations through natural dispersal mechanisms, their spread within and among the Great Lakes is likely aided by transport via ships. We, therefore, recommend that ballast-water treatment and management may limit the spread of non-native species within the Great Lakes after the initial introduction in addition to preventing the introduction of non-native species to the Great Lakes. Springer Science+Business Media B.V., 2010 Great Lakes nationallicence Neogobius melanostomus nationallicence Ballast water nationallicence Fish movement nationallicence Aquatic invasive species nationallicence Gene flow nationallicence LaRue Elizabeth Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut Ruetz III Carl Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut Stacey Michael Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut Thum Ryan Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut Hydrobiologia Springer Netherlands 663/1(2011-03-01), 71-82 0018-8158 663:1<71 2011 663 10750 https://doi.org/10.1007/s10750-010-0555-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0555-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- LaRue Elizabeth Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut NATIONALLICENCE 700 1- Ruetz III Carl Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut NATIONALLICENCE 700 1- Stacey Michael Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut NATIONALLICENCE 700 1- Thum Ryan Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, 49441, Muskegon, MI, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 663/1(2011-03-01), 71-82 0018-8158 663:1<71 2011 663 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer