Extreme homozygosity in Southern Hemisphere populations of Deladenus siricidicola, a biological control agent of Sirex noctilio

h i g h l i g h t s " High throughput development of microsatellite markers for Deladenus siricidicola populations. " D. siricidicola populations in the Southern Hemisphere lacks any diversity. " The diversity reflects the breeding and distribution history of the nematode. " Southern Hemisphere and Canadian populations are distinct. " Management using the nematode should be adapted using the data provided here