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dc.contributor.authorOliver, Paul M
dc.contributor.authorAshman, Lauren G
dc.contributor.authorBank, Sarah
dc.contributor.authorLaver, Rebecca J
dc.contributor.authorPratt, Renae C
dc.contributor.authorTedeschi, Leonardo G
dc.contributor.authorMoritz, Craig C
dc.date.accessioned2019-08-01T04:48:27Z
dc.date.available2019-08-01T04:48:27Z
dc.date.issued2019
dc.identifier.issn1471-2148
dc.identifier.doi10.1186/s12862-019-1408-1
dc.identifier.urihttp://hdl.handle.net/10072/384689
dc.description.abstractBackground: Congruent patterns in the distribution of biodiversity between regions or habitats suggest that key factors such as climatic and topographic variation may predictably shape evolutionary processes. In a number of tropical and arid biomes, genetic analyses are revealing deeper and more localised lineage diversity in rocky ranges than surrounding habitats. Two potential drivers of localised endemism in rocky areas are refugial persistence through climatic change, or ecological diversification and specialisation. Here we examine how patterns of lineage and phenotypic diversity differ across two broad habitat types (rocky ranges and open woodlands) in a small radiation of gecko lizards in the genus Gehyra (the australis group) from the Australian Monsoonal Tropics biome. Results: Using a suite of approaches for delineating evolutionarily independent lineages, we find between 26 and 41 putative evolutionary units in the australis group (versus eight species currently recognised). Rocky ranges are home to a greater number of lineages that are also relatively more restricted in distribution, while lineages in open woodland habitats are fewer, more widely distributed, and, in one case, show evidence of range expansion. We infer at least two shifts out of rocky ranges and into surrounding woodlands. Phenotypic divergence between rocky ranges specialist and more generalist taxa is detected, but no convergent evolutionary regimes linked to ecology are inferred. Conclusions: In climatically unstable biomes such as savannahs, rocky ranges have functioned as zones of persistence, generators of diversity and a source of colonists for surrounding areas. Phenotypic divergence can also be linked to the use of differing habitat types, however, the extent to which ecological specialisation is a primary driver or secondary outcome of localised diversification remains uncertain.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherBMC
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto15
dc.relation.ispartofissueArticle 81
dc.relation.ispartofjournalBMC EVOLUTIONARY BIOLOGY
dc.relation.ispartofvolume19
dc.subject.fieldofresearchEvolutionary Biology
dc.subject.fieldofresearchGenetics
dc.subject.fieldofresearchcode0603
dc.subject.fieldofresearchcode0604
dc.titleOn and off the rocks: persistence and ecological diversification in a tropical Australian lizard radiation
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/publicdomain/zero/1.0/
gro.rights.copyright© The Author(s). 2019 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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gro.griffith.authorOliver, Paul M.


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