caa a22 4500 445857056 CHVBK 20180317145431.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10592-010-0140-6 doi (NATIONALLICENCE)springer-10.1007/s10592-010-0140-6 Population genetic structure of island and mainland populations of the quokka, Setonix brachyurus (Macropodidae): a comparison of AFLP and microsatellite markers [Elektronische Daten] [Erika Alacs, Peter Spencer, Paul de Tores, Siegfried Krauss] Translocation and reintroduction are important tools for the conservation or recovery of species threatened with extinction in the wild. However, an understanding of the potential genetic consequences of mixing populations requires an understanding of the genetic variation within, and similarities among, donor and recipient populations. Genetic diversity was measured using two independent marker systems (microsatellites and AFLPs) for one island and four small remnant mainland populations of Setonix brachyurus, a threatened medium sized macropod restricted to fragmented habitat remnants and two off-shore islands in southwest Australia. Microsatellite diversity in the island population (R s=3.2, H e=71%) was similar to, or greater than, all mainland populations (R s=2.1-3.9, H e=34-71%). In contrast, AFLP diversity was significantly lower in the island population (PPL=20.5; H j=0.118) compared to all mainland populations (mean PPL=79.5-89.7; mean H j=0.23-0.29). Microsatellites differentiated all (mainland and island) populations from each other. However, AFLP only differentiated the island population from the mainland populations—all mainland populations were not significantly differentiated from each other for this marker. Given a known time since isolation of the island population from the mainland (6,000years ago), and an overall more conservative rate of evolution of AFLP markers, our results are consistent with mainland populations fragmenting thousands of years ago (but <6,000years), probably as a consequence of reduced rainfall and the constriction of the preferred mesic habitat of quokkas. Our results also support a recent history of severe population bottlenecks in mainland populations, and a long history of bottlenecks of the island population, but reflect a recent explosion in numbers since European occupation of the island. Our results indicate that translocation of island populations to supplement mainland populations would introduce genetically markedly differentiated, and possibly maladapted, individuals. Springer Science+Business Media B.V., 2010 Marsupial nationallicence Genetic variation nationallicence Historical fragmentation nationallicence Conservation nationallicence Management nationallicence Alacs Erika School of Biological Sciences & Biotechnology, Murdoch University, 6150, Murdoch, Western Australia, Australia aut Spencer Peter School of Biological Sciences & Biotechnology, Murdoch University, 6150, Murdoch, Western Australia, Australia aut de Tores Paul Department of Environment and Conservation, Wildlife Research Centre, P.O. Box 51, 6946, Wanneroo, Western Australia, Australia aut Krauss Siegfried Botanic Gardens and Parks Authority, Kings Park and Botanic Gardens, Fraser Ave, West Perth, 6005, Western Australia, Australia aut Conservation Genetics Springer Netherlands 12/1(2011-02-01), 297-309 1566-0621 12:1<297 2011 12 10592 https://doi.org/10.1007/s10592-010-0140-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10592-010-0140-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alacs Erika School of Biological Sciences & Biotechnology, Murdoch University, 6150, Murdoch, Western Australia, Australia aut NATIONALLICENCE 700 1- Spencer Peter School of Biological Sciences & Biotechnology, Murdoch University, 6150, Murdoch, Western Australia, Australia aut NATIONALLICENCE 700 1- de Tores Paul Department of Environment and Conservation, Wildlife Research Centre, P.O. Box 51, 6946, Wanneroo, Western Australia, Australia aut NATIONALLICENCE 700 1- Krauss Siegfried Botanic Gardens and Parks Authority, Kings Park and Botanic Gardens, Fraser Ave, West Perth, 6005, Western Australia, Australia aut NATIONALLICENCE 773 0- Conservation Genetics Springer Netherlands 12/1(2011-02-01), 297-309 1566-0621 12:1<297 2011 12 10592 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer