ArticleBMC evolutionary biology2010
Evolutionary relationships and divergence times among the native rats of Australia.
Article in BMC evolutionary biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed.
- Detection of Vkorc1 single nucleotide polymorphisms indicates the presence of anticoagulant rodenticide resistance in Australia's introduced ratsPest management science · 2025Article
- Description and phylogenetic implications of a de novo mitochondrial genome of Rhinichthys atratulus (Teleostei: Leuciscidae) from Connecticut.Scientific reports · 2024Article
- The complete mitochondrial genome and phylogenetic analysis ofMitochondrial DNA. Part B, Resources · 2024Article
- Divergent Hantavirus in Somali Shrews (Pathogens (Basel, Switzerland) · 2023Article
- Probing the genomic limits of de-extinction in the Christmas Island rat.Current biology : CB · 2022Article
- No hybrid snowcocks in the Altai-Hyper-variable markers can be problematic for phylogenetic inference.Ecology and evolution · 2021Article
- Evidence of two deeply divergent co-existing mitochondrial genomes in the Tuatara reveals an extremely complex genomic organization.Communications biology · 2021Article
- Rapid host expansion of an introduced parasite, the spiny rat louse Polyplax spinulosa (Psocodea: Phthiraptera: Polyplacidae), among endemic rodents in Australia.Parasites & vectors · 2020Article
- Article
- New record of the Oriental house rat,Mitochondrial DNA. Part B, Resources · 2018Article
- Whole-Genome Sequencing Reveals Genetic Variation in the Asian House Rat.G3 (Bethesda, Md.) · 2016Article
- The mitochondrial genome of Angiostrongylus mackerrasae as a basis for molecular, epidemiological and population genetic studies.Parasites & vectors · 2015Article
- Phylogenetic species identification in Rattus highlights rapid radiation and morphological similarity of New Guinean species.PloS one · 2014Article
- A glimpse on the pattern of rodent diversification: a phylogenetic approach.BMC evolutionary biology · 2012Article
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6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundThe genus Rattus is highly speciose and has a complex taxonomy that is not fully resolved. As shown previously there are two major groups within the genus, an Asian and an Australo-Papuan group. This study focuses on the Australo-Papuan group and particularly on the Australian rats. There are uncertainties regarding the number of species within the group and the relationships among them. We analysed 16 mitochondrial genomes, including seven novel genomes from six species, to help elucidate the evolutionary history of the Australian rats. We also demonstrate, from a larger dataset, the usefulness of short regions of the mitochondrial genome in identifying these rats at the species level.
resultsAnalyses of 16 mitochondrial genomes representing species sampled from Australo-Papuan and Asian clades of Rattus indicate divergence of these two groups ~2.7 million years ago (Mya). Subsequent diversification of at least 4 lineages within the Australo-Papuan clade was rapid and occurred over the period from ~ 0.9-1.7 Mya, a finding that explains the difficulty in resolving some relationships within this clade. Phylogenetic analyses of our 126 taxon, but shorter sequence (1952 nucleotides long), Rattus database generally give well supported species clades.
conclusionsOur whole mitochondrial genome analyses are concordant with a taxonomic division that places the native Australian rats into the Rattus fuscipes species group. We suggest the following order of divergence of the Australian species. R. fuscipes is the oldest lineage among the Australian rats and is not part of a New Guinean radiation. R. lutreolus is also within this Australian clade and shallower than R. tunneyi while the R. sordidus group is the shallowest lineage in the clade. The divergences within the R. sordidus and R. leucopus lineages occurring about half a million years ago support the hypotheses of more recent interchanges of rats between Australia and New Guinea. While problematic for inference of deeper divergences, we report that the analysis of shorter mitochondrial sequences is very useful for species identification in rats.
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