Comparative Population Genetic Structure of the Endangered Southern Brown Bandicoot, Isoodon obesulus, in Fragmented Landscapes of Southern Australia.

摘要: Genetic connectivity is a key factor for maintaining the persistence of populations in fragmented landscapes. In highly modified landscapes such us peri-urban areas, organisms' dispersal among habitat patches can be reduced due to surrounding matrix, leading subsequent decreased gene flow and increased potential extinction risk isolated sub-populations. However, few studies have compared within species how dispersal/gene varies between regions different forms matrix that might encountered. current study, we investigated an endangered marsupial, southern brown bandicoot (Isoodon obesulus) heavily landscape South Australia, Australia. We used 14 microsatellite markers genotype 254 individuals which were sampled from 15 sites. Analyses revealed significant genetic structure. Our analyses also indicated was mostly limited neighbouring Comparisons these results with population same flow/dispersal more this than pine plantation approximately 400 km south-east. These findings increase our understanding nature fragmentation lead profound differences levels species.