Conserving and restoring endangered southern populations of the Squirrel Glider (<i>Petaurus norfolcensis</i>) in agricultural landscapes

Crane, Mason; Lindenmayer, David B.; Banks, Samuel

doi:10.1111/emr.12245

Cited by 6 publications

(3 citation statements)

References 58 publications

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“…Areas either side of the dashed line represent two genetically distinct populations. Figure taken from Crane et al [ 16 ].…”

Section: Figurementioning

confidence: 99%

“…Genes 2021, 12, x FOR PEER REVIEW 2 of 13 that share the same distribution are P. norfolcensis and P. breviceps. Both species occur along the east coast of Australia, with P. norfolcensis sharing habitats in Queensland with P. b. longicaudus and P. b. breviceps, and the rest of its range with P. b. breviceps (Figure 1) [15,16]. P. norfolcensis is currently listed as a threatened species in South Australia, Victoria, and New South Wales, and common in Queensland (National Parks and Wildlife Act 1972, Flora and Fauna Guarantee Act 1988, Threatened Species Conservation Act 1995), while P. breviceps is listed as common across each state.…”

Section: Introductionmentioning

confidence: 99%

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Genome-Wide SNPs Detect Hybridisation of Marsupial Gliders (Petaurus breviceps breviceps × Petaurus norfolcensis) in the Wild

Knipler

Dowton

Mikac

2021

Genes

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Petaurus breviceps and Petaurus norfolcensis have produced hybrids in captivity, however there are no reported cases of Petaurus hybridisation in the wild. This study uses morphological data, mitochondrial DNA, and nuclear genome-wide SNP markers to confirm P. breviceps breviceps × P. norfolcensis hybridisation within their natural range on the central coast of New South Wales, Australia. Morphological data identified a potential hybrid that was confirmed with next-generation sequencing technology and 10,111 genome-wide SNPs. Both STRUCTURE and NewHybrid analyses identified the hybrid as a P. norfolcensis backcross, which suggests an initial F1 hybrid was fertile. The mitochondrial DNA matched that of a P. b. breviceps, indicating that a P. b. breviceps female initially mated with a P. norfolcensis male to produce a fertile female offspring. Our study is an important example of how genome-wide SNPs can be used to identify hybrids where the distribution of congeners overlaps. Hybridisation between congeners is likely to become more frequent as climate changes and habitats fragment, resulting in increased interactions and competition for resources and mates.

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“…Areas either side of the dashed line represent two genetically distinct populations. Figure taken from Crane et al [ 16 ].…”

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genome-Wide SNPs Detect Hybridisation of Marsupial Gliders (Petaurus breviceps breviceps × Petaurus norfolcensis) in the Wild

Knipler

Dowton

Mikac

2021

Genes

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“…and play a key role in conservation. Landscapes retaining mosaics of landscape elements and keystone habitats, such as patches of vegetation and remnant mature trees, support rich levels of biodiversity (Haslem & Bennett 2008), including many threatened species (Manning & Lindenmayer 2009; Crane et al 2017…”

Section: Introductionmentioning

confidence: 99%

The conservation of arboreal marsupials in the Albury‐Wodonga region of south‐eastern Australia

Michael¹,

Niedra²,

McWhinney³

2021

Eco Management Restoration

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Urban expansion is a major cause of land use change and presents a significant threat to biodiversity worldwide. Agricultural land is often acquired by local councils and developers to expand urban growth boundaries and establish new housing estates. However, many agricultural landscapes support high biodiversity values, especially farmlands that feature mosaics of native vegetation and keystone habitat such as hollow-bearing trees. In southeastern Australia, many arboreal marsupials including the threatened Squirrel Glider (Petaurus norfolcensis) have populations within peri-urban zones of expanding rural cities. A key challenge to planners, developers and conservation organisations is the need to maintain habitat for locally rare and threatened species as land undergoes changes in management. Critical to the sustainable development of peri-urban landscapes is a thorough understanding of the distribution, habitat requirements and resources available to maintain and improve habitat for species dependent on limited resources such as tree cavities. In this management report, we present background information on an integrated research programme designed to evaluate potential impacts of urban development on fauna in the Albury Local Government Area, NSW. We mapped hollow-bearing trees, erected nest boxes and monitored arboreal marsupials. Information presented in this report provides a blueprint for monitoring arboreal marsupials, including threatened species in other developing regions, and will assist the Albury-Wodonga local governments in future planning of sustainable living environments.

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Does nest box use reduce the fitness of a tree‐cavity dependent mammal?

Goldingay

2017

Ecological Research

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Nest boxes are frequently used in conservation programs for tree‐cavity dependent wildlife. There is growing concern that the poor insulation properties of nest boxes may produce an ecological trap, because species may require microclimates less extreme or less variable than those experienced inside nest boxes. I investigated the fitness consequences of nest box use in a non‐flying mammal. Fifty‐two of 104 squirrel gliders (Petaurus norfolcensis) trapped over a 3‐year period used nest boxes. Population modelling of the capture data revealed that the probability of apparent survival increased with increasing nest box use. There was no difference in breeding frequency between females that used or did not use nest boxes. There was no evidence that offspring development was hindered within nest boxes. These findings may arise because: (1) gliders could access tree hollows during extreme temperatures, (2) ambient temperatures were mild during the study, (3) gliders construct leaf nests which insulate against low temperatures in winter, and (4) gliders breed between autumn and spring when temperatures are relatively benign. The estimate of annual survival of animals using nest boxes (0.60), was equivalent to estimates at locations where squirrel gliders were either reliant on nest boxes (0.54) or on tree cavities (0.55) for shelter. Studies such as this need to be conducted on a range of species across a range of locations to better understand the influence of nest box use on non‐flying mammals.

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Conserving and restoring endangered southern populations of the Squirrel Glider (Petaurus norfolcensis) in agricultural landscapes

Cited by 6 publications

References 58 publications

Genome-Wide SNPs Detect Hybridisation of Marsupial Gliders (Petaurus breviceps breviceps × Petaurus norfolcensis) in the Wild

Genome-Wide SNPs Detect Hybridisation of Marsupial Gliders (Petaurus breviceps breviceps × Petaurus norfolcensis) in the Wild

The conservation of arboreal marsupials in the Albury‐Wodonga region of south‐eastern Australia

Does nest box use reduce the fitness of a tree‐cavity dependent mammal?

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