Habitat relationships and presence of the threatened heath frog Litoria littlejohni (Anura: Hylidae) in central New South Wales, Australia

Lemckert, Francis

doi:10.3354/esr00277

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…The Warragamba dam creates Lake Burragorang, however, L. littlejohni does not occupy large lakes. Rather, this frog is typically associated with rst order streams and small re dams (Mahony et al 2020, Lemckert 2010). Thus, the lake may act as barrier due to unsuitable habitat.…”

Section: Population Structurementioning

confidence: 99%

Genome-wide SNPs reveals inbreeding, small populations, and strong genetic isolation in a threatened frog (Litoria littlejohni)

Stock

Klop‐Toker

Wallace

et al. 2022

Preprint

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The status of many amphibian populations remains unclear due to undetected declines driven by disease and difficulties in obtaining accurate population estimates. Here, we used genetic data (Single Nucleotide Polymorphisms) to investigate Australia’s poorly understood Littlejohn’s treefrog, Litoria littlejohni across its fragmented distribution. We detected five identifiable genetic clusters, with moderate to strong genetic isolation. At a regional scale, population isolation likely of population crashes, resulting in small populations with evidence of founder effects. Moderate genetic isolation was detected among populations on the Woronora Plateau despite short distances between population clusters. Evidence of recent declines was apparent in three populations that had very small effective population size, reduced genetic diversity and high inbreeding values. The rates of inbreeding detected in these populations combined with their small size leave these populations at elevated risk of extinction. The Cordeaux Cluster was identified as the most robust population as it was the largest and most genetically diverse. This study exemplifies the value of employing genetic methods to study rare, cryptic species. Despite low recapture rates using traditional capture-recapture demographic methods, we were able to derive population estimates, describe patterns of gene flow, and demonstrate the need for urgent conservation management.

show abstract

Section: Population Structurementioning

confidence: 99%

Genome-wide SNPs reveals inbreeding, small populations, and strong genetic isolation in a threatened frog (Litoria littlejohni)

Stock

Klop‐Toker

Wallace

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

Uncovering inbreeding, small populations, and strong genetic isolation in an Australian threatened frog, Litoria littlejohni

et al. 2023

View full text Add to dashboard Cite

The status of many amphibian populations remains unclear due to undetected declines driven by disease and difficulties in obtaining accurate population estimates. Here, we used genome complexity reduction-based sequencing technology to study the poorly understood Littlejohn’s treefrog, Litoria littlejohni across its fragmented distribution in eastern Australia. We detected five identifiable genetic clusters, with moderate to strong genetic isolation. At a regional scale, population isolation was likely driven by population crashes, resulting in small populations impacted by founder effects. Moderate genetic isolation was detected among populations on the Woronora Plateau despite short distances between population clusters. Evidence of recent declines was apparent in three populations that had very small effective population size, reduced genetic diversity and high inbreeding values. The rates of inbreeding detected in these populations combined with their small size leave these populations at elevated risk of extinction. The Cordeaux Cluster was identified as the most robust population as it was the largest and most genetically diverse. This study exemplifies the value of employing genetic methods to study rare, cryptic species. Despite low recapture rates using traditional capture-recapture demographic methods, we were able to derive population estimates, describe patterns of gene flow, and demonstrate the need for urgent conservation management.

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The Decline of Australian Heath Frogs and Summary of Current Threats

Klop‐Toker¹,

Wallace²,

Stock³

et al. 2022

Imperiled: The Encyclopedia of Conservation

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Habitat relationships and presence of the threatened heath frog Litoria littlejohni (Anura: Hylidae) in central New South Wales, Australia

Cited by 4 publications

References 23 publications

Genome-wide SNPs reveals inbreeding, small populations, and strong genetic isolation in a threatened frog (Litoria littlejohni)

Genome-wide SNPs reveals inbreeding, small populations, and strong genetic isolation in a threatened frog (Litoria littlejohni)

Uncovering inbreeding, small populations, and strong genetic isolation in an Australian threatened frog, Litoria littlejohni

The Decline of Australian Heath Frogs and Summary of Current Threats

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