Systematics, biogeography and ancestral state of the Australian marsupial genus Antechinus (Dasyuromorphia: Dasyuridae)

Mutton, Thomas Y; Phillips, Matthew J.; Fuller, Susan; Bryant, Litticia M.; Baker, Andrew

doi:10.1093/zoolinnean/zly062

Cited by 15 publications

(21 citation statements)

References 78 publications

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“…These include a 'ACWNY' tRNA gene re-arrangement (Paabo et al 1991); 21 transfer RNA (tRNA), due to a tRNA Lys pseudogene (no lysine anticodon) (Janke et al 1994;Dorner et al 2001); and lack of an aspartic acid anticodon, likely post-transcriptionally rescued by RNA-editing (Janke and Paabo 1993). In agreement with previous reports (Krajewski et al 2007;Kumar et al 2017;Mutton et al 2019), phylogenetic analysis revealed that Antechinus is closely related to the genera Phascogale of Australia and Murexia of New Guinea, and A. arktos forms a monophyletic group along with previously reported Antechinus species (Figure 1). Maximumlikelihood (ML; assessed using IQ-TREE (Nguyen et al 2015)) and Bayesian Interference (BI; assessed using MrBayes version 3.2.7 (Ronquist and Huelsenbeck 2003)), with the mtMAMþIþG4 model chosen using to the Bayesian Information Criterion) resulted in an identical tree topology.…”

supporting

confidence: 79%

The mitochondrial genome of the black-tailed dusky antechinus (Antechinus arktos)

Geng

Yang

Guo

et al. 2020

Mitochondrial DNA Part B

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In this study, we report the mitochondrial genome of the black-tailed antechinus (Antechinus arktos), a recently-discovered, endangered carnivorous marsupial inhabiting a caldera that straddles the border of Australia's mid-east coast. The circular A. arktos genome is 17,334 bp in length and has an AT content of 63.3%. Its gene content and arrangement are consistent with reported marsupial mitogenome assemblies.

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supporting

confidence: 79%

The mitochondrial genome of the black-tailed dusky antechinus (Antechinus arktos)

Geng

Yang

Guo

et al. 2020

Mitochondrial DNA Part B

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“…The dasyurid subfamily Phascogalinae comprises three genera: Antechinus and Phascogale of Australia, and Murexia of New Guinea. Although morphological similarities exist, the current evidence suggests these genera derived from a common ancestor some 12.5 million years ago (Mutton et al 2019). Murexia spp.…”

mentioning

confidence: 81%

“…Although morphological similarities exist, the current evidence suggests these genera derived from a common ancestor some 12.5 million years ago (Mutton et al. 2019 ). Murexia spp.…”

mentioning

confidence: 98%

The mitochondrial genome of the black-tailed dasyure (Murexia melanurus)

Tian

Geng

Thomas

et al. 2019

Mitochondrial DNA Part B

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In this study, we report the mitochondrial genome of the black-tailed dasyure (Murexia melanurus) of New Guinea. The circular genome is 17,736 bp in length and has an AT content of 60.5%. Its gene content-13 protein-coding genes (PCGs), 2 ribosomal (rRNA) genes, 21 transfer RNA (tRNA) genes, a tRNA pseudogene (tRNA Lys), and a non-coding control region (CR)and gene arrangement are consistent with previous marsupial mitogenome assemblies.

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“…Recent work has uncovered several new antechinus species, bringing the total number of species to 15 (Mutton, Phillips, Fuller, Bryant, & Baker, 2019). In 2018, A. arktos and A. argentus were listed as Endangered on the Australian Government's threatened species list and were included in the 20 Australian mammals most likely to go extinct in the next two decades (Geyle et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

A chromosome-level genome of Antechinus flavipes provides a reference for an Australasian marsupial genus with suicidal reproduction

Tian¹,

Han²,

Geng³

et al. 2021

Preprint

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The 15 species of small carnivorous marsupials that comprise the genus Antechinus exhibit semelparity, a rare life-history strategy where death occurs after one breeding season. Antechinus males, but not females, age rapidly (demonstrate organismal senescence) during the breeding season and show promise as new animal models of ageing. Some antechinus species are also threatened or endangered. Here, we report chromosome-level genomes of the yellow-footed antechinus Antechinus flavipes. The genome assembly has a total length of 3.2 Gb with a contig N50 of 51.8 Mb and a scaffold N50 of 636.7 Mb. We anchored and oriented 99.7% of the assembly on seven pseudochromosomes and found that repetitive DNA sequences occupy 51.8% of the genome. Draft genome assemblies of three related species in the subfamily Phascogalinae, two additional antechinus species (A. argentus and A. arktos) and the iteroparous sister species Murexia melanurus were also generated. Preliminary demographic analysis supports the hypothesis that climate change during the Pleistocene isolated species in Phascogalinae and shaped their population size. A transcriptomic profile across the A. flavipes breeding season allowed us to identify genes associated with aspects of the male die-off. The chromosome-level A. flavipes genome provides a steppingstone to understanding an enigmatic life-history strategy and a resource to assist the conservation of antechinuses.

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Systematics, biogeography and ancestral state of the Australian marsupial genus Antechinus (Dasyuromorphia: Dasyuridae)

Cited by 15 publications

References 78 publications

The mitochondrial genome of the black-tailed dusky antechinus (Antechinus arktos)

The mitochondrial genome of the black-tailed dusky antechinus (Antechinus arktos)

The mitochondrial genome of the black-tailed dasyure (Murexia melanurus)

A chromosome-level genome of Antechinus flavipes provides a reference for an Australasian marsupial genus with suicidal reproduction

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