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Population genetic patterns in an irruptive species, the long-nosed bandicoot (Perameles nasuta)

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Abstract

Understanding the genetic diversity of a population is important for understanding population persistence and extinction risk. The long-nosed bandicoot (Perameles nasuta) was once regarded as common throughout its range, but it is unknown whether it is at risk of decline and the genetic diversity in this species has not been assessed. We evaluated the genetic structure and diversity of a P. nasuta population from samples collected during a 6 year demographic study that encompassed a cyclical fluctuation in abundance. Genetic diversity was higher compared to other studies on bandicoot species suggesting the population is not genetically impoverished. We detected significant temporal genetic differentiation suggesting turnover of genotypes. There was no strong evidence for population structuring, indicating a panmictic population. Individual-based spatial autocorrelation analysis generated a similar pattern of relatedness across geographical distances for both sexes suggesting no or limited sex-biased dispersal. This study provides useful baseline genetic data for a large P. nasuta population that is not significantly impacted by introduced predators or habitat destruction.

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Acknowledgements

This project was supported by grants by the Australian Research Council. We thank the Wreck Bay Aboriginal Community for supporting this research. We also thank Parks Australia and Long Term Ecological Research Network for their support.

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Authors and Affiliations

  1. Fenner School of Environment and Society, The Australian National University, Canberra, 2601, Australia

    M. P. Piggott, S. C. Banks, C. MacGregor & D. B. Lindenmayer

  2. Long-term Ecological Research Network, Terrestrial Ecosystem Research Network, The Australian National University, Canberra, 2601, Australia

    D. B. Lindenmayer

Authors
  1. M. P. Piggott
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  2. S. C. Banks
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  3. C. MacGregor
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  4. D. B. Lindenmayer
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Correspondence to M. P. Piggott.

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Piggott, M.P., Banks, S.C., MacGregor, C. et al. Population genetic patterns in an irruptive species, the long-nosed bandicoot (Perameles nasuta). Conserv Genet 19, 655–663 (2018). https://doi.org/10.1007/s10592-017-1044-5

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  • DOI: https://doi.org/10.1007/s10592-017-1044-5

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