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• W2804037668 abstract "Thesis by publication.%%%%%%%%%%%%1. General introduction  – 2. Genetic divergence among regions containing the vulnerable great desert skink (Liopholis kintorei) in the Australian arid zone  – 3. Sex-biased dispersal and fine-scale movement in a group-living lizard, the great desert skink, Liopholis kintorei  – 4. Variable social organisation in a group-living lizard, Liopholis kintorei  – 5. Do bigger heads make burly males? Sexual selection and the evolution of sexual head size dimorphism in lizards  – 6. General discussion  – Appendix.%%%%The great desert skink, Liopholis kintorei, is a listed Threatened species with a patchy distribution across the arid zone of central and western Australia. It is a member of a group of Australian lizards, the Egernia group, recently adopted as model species for the early evolution and maintenance of vertebrate sociality. Most Egernia group species that live in stable, kin-based groups utilise pre-existing shelter sites such as rock crevices, but L. kintorei is unique in that individuals cooperatively construct and maintain extensive burrow systems that house kin.%%%%I researched aspects of the behavioural ecology and social structure of L. kintorei, using field-based methods and molecular techniques. I captured individuals from a study population at the Australian Wildlife Conservancy’s Newhaven Sanctuary in central Australia, at which a total of seven months of fieldwork was carried out over three years. The results of my research are discussed in the context of the evolution and maintenance of kin-based social living, with comments on the implications for the species’ conservation in central Australia.%%%%Social organisation was investigated by trapping lizards at their burrows over the three years and through molecular analyses of relatedness within and among groups. Like other members of the Egernia group, L. kintorei has a complex social structure. Generally, I found that L. kintorei at Newhaven live in groups of related individuals, although there is considerable variation among groups in their size, structure and stability across years: some groups involved male–female pairs together for a single season, while one group contained a mated pair and offspring from three separate seasons. It is possible that L. kintorei social groups are not so constrained by habitat availability because of their ability to construct their own shelter sites. However, the importance of stable food sources in the unpredictable desert environment could maintain group living in this species because tolerance among group members would allow them to share such resources rather than compete among kin.%%%%Through broader-scale genetic analyses, I found evidence of male-biased dispersal, with no genetic structure among males, but significantly high relatedness among females at short distance classes. This was supported by the recapture data for males, showing a higher level of movement among burrows than for females. Males were captured, on average, at a higher number of distinct burrows than were…" @default.
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• W2804037668 date "2015-01-01" @default.
• W2804037668 modified "2023-09-27" @default.
• W2804037668 title "Social organisation and population genetics of the threatened great desert skink, Liopholis kintorei" @default.
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