Neighbour joining tree showing the genetic relationships among feral pig individuals in north Queensland, based on Tamura-Nei genetic distances using control region mtDNA (mitochondrial DNA) sequence data

Feral pigs occur throughout tropical far north Queensland, Australia and are a significant threat to biodiversity and World Heritage values, agriculture and are a vector of infectious diseases. One of the constraints on long-lasting, local eradication of feral pigs is the process of reinvasion into recently controlled areas. This study examined the population genetic structure of feral pigs in far north Queensland to identify the extent of movement and the scale at which demographically independent management units exist. Genetic analysis of 328 feral pigs from the Innisfail to Tully region of tropical Queensland was undertaken. Seven microsatellite loci were screened and Bayesian clustering methods used to infer population clusters. Sequence variation at the mitochondrial DNA control region was examined to identify pig breed. Significant population structure was identified in the study area at a scale of 25 to 35 km, corresponding to three demographically independent management units (MUs).

Only bootstrap values >90% are shown in the diagram and the scale indicates genetic distance. Symbols represent management unit designation based on microsatellite Bayesian clustering analysis.

野生猪在澳大利亚热带远北昆士兰州广泛分布，对生物多样性、世界遗产价值、农业构成重大威胁，同时也是传染病的传播媒介。长久以来，对于野生猪的局部根除面临的一个限制因素是它们对近期已控制的区域的再次入侵。本研究旨在通过分析远北昆士兰州野生猪的种群遗传结构，以确定其迁移范围及存在独立人口管理单位的规模。对来自热带昆士兰州Innisfail至Tully地区的328头野生猪进行了遗传分析。筛选了七个微卫星位点，并利用贝叶斯聚类方法推断种群聚类。通过观察线粒体DNA控制区域的序列变异来识别猪种。研究区域内，以25至35公里的尺度上发现了显著的种群结构，对应于三个独立的人口管理单位（MUs）。图中仅展示了大于90%的自举值，且尺度表示遗传距离。符号代表基于微卫星贝叶斯聚类分析的单元标识。