Conservation genomics of an endangered subspecies of Southern Emu-Wren, <i>Stipiturus malachurus</i> (Passeriformes: Maluridae)

Bradford, Tessa M.; Pickett, Marcus; Donnellan, Stephen C.; Gardner, Michael G.; Schofield, Julie Anne

doi:10.1080/01584197.2017.1422391

Cited by 3 publications

(2 citation statements)

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“…Direct use of monitoring based on genomic methods is still largely confined to species of high commercial value, but cases from conservation management are emerging (Garner et al 2016). Four examples are conservation of the Tiger Panthera tigris tigris (Natesh et al 2017), the Southern Emu-wren Stipiturus malachurus (Bradford et al 2018), the Pacific Lamprey Entosphenus tridentatus (Hess et al 2013(Hess et al , 2015 and the Tasmanian Devil Sarcophilus harrisii (Miller et al 2011b, Hogg et al 2017. In New Zealand, the recovery groups for the critically endangered Kakapo (through the K ak ap o125+ sequencing project) and Black Stilt, or Kak ı Himantopus novaezelandiae (Galla et al 2019(Galla et al , 2020, are leading in this field.…”

Section: Discussionmentioning

confidence: 99%

Gaps in genetic knowledge affect conservation management of kiwi (Apteryx) species

Undin

Hills

Lockhart

et al. 2021

Ibis

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Worldwide, there is growing appreciation of the importance of integrating genetic information into conservation management. However, there are commonly occurring problems which impact on doing this successfully. This issue is well illustrated by kiwi Apteryx species. Like many endangered taxa, extant kiwi populations are small, fragmented and isolated, raising concerns of potential inbreeding depression. Accordingly, kiwi conservation includes discussion of genetic management and translocations. To date, kiwi taxa have been the subject of 41 genetic studies. Here we provide the first synthesized review of these studies. We conclude that despite the impressive study effort, current understanding of kiwi genetics is insufficient to guide genetic management, predict translocation outcomes and manage biological diversity to achieve future sustainability of the species. We explain why, and outline research questions that can be addressed with new genome science technologies. Using new technologies to build on the foundation of work already undertaken, we see a great opportunity to address key issues for North Island Brown Kiwi Apteryx mantelli that are central to the conservation concerns for many threatened species. Specifically, we suggest that historical, disjunct, mainland populations combined with translocations of North Island Brown Kiwi to offshore islands have generated unique case studies to investigate the effects of fragmentation, cessation of gene flow, inbreeding, outbreeding and hybridization on biological diversity.

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Section: Discussionmentioning

confidence: 99%

Gaps in genetic knowledge affect conservation management of kiwi (Apteryx) species

Undin

Hills

Lockhart

et al. 2021

Ibis

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“…Within conservation research, DNA sequencing technologies are becoming an increasingly popular as these technologies enhance and complement traditional population monitoring techniques (Hohenlohe et al 2020). Genetic methods typically require lower sampling effort and can provide insight into behaviours, such as dispersal and breeding, making them highly suitable for species that are di cult to observe ( nuclear genome wide sequencing to identify single nucleotide polymorphisms (SNPs) have been used to greatly expand our knowledge of population connectivity, dispersal patterns, effective population sizes, mating systems and genetic diversity for several rare and cryptic species (Allendorf et al 2010;Bradford et al 2018;Harrison et al 2019;Miller et al 2018). By employing these methods alongside traditional eldwork, researchers can develop more speci c and informed conservation actions for species facing extinction (Frankham et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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

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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.

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

et al. 2023

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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 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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Conservation genomics of an endangered subspecies of Southern Emu-Wren, Stipiturus malachurus (Passeriformes: Maluridae)

Cited by 3 publications

References 38 publications

Gaps in genetic knowledge affect conservation management of kiwi (Apteryx) species

Gaps in genetic knowledge affect conservation management of kiwi (Apteryx) species

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

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