Limited genetic structure detected in sugar gliders (Petaurus breviceps) using genome-wide SNPs
Monica Knipler
A * , Mark Dowton B and Katarina Mikac A *
+ Author Affiliations
- Author Affiliations
A School of Earth, Atmospheric and Life Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia.
B The School of Chemistry and Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, NSW 2522, Australia.
Australian Mammalogy 45(1) 41-52 https://doi.org/10.1071/AM21048
Submitted: 14 December 2021 Accepted: 17 May 2022 Published: 10 June 2022
© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of the Australian Mammal Society.
Abstract
Arboreal gliders are vulnerable to habitat fragmentation and to barriers that extend their glide distance threshold. Habitat fragmentation through deforestation can cause population isolation and genetic drift in gliding mammals, which in turn can result in a loss of genetic diversity and population long-term persistence. This study utilised next generation sequencing technology to call 8784 genome-wide SNPs from 90 sugar gliders (Petaurus breviceps) sensu stricto. Samples were collected from 12 locations in the Lake Macquarie Local Government Area (New South Wales). The sugar gliders appeared to have high levels of gene flow and little genetic differentiation; however spatial least cost path analyses identified the Pacific Motorway as a potential barrier to their dispersal. This Motorway is still relatively new (<40 years old), so man-made crossing structures should be erected as a management priority to mitigate any long-term effects of population isolation by assisting in the dispersal and gene flow of the species.
Keywords: barriers, conservation, DArTseq, habitat fragmentation, matrix management, Petaurus breviceps, population genetics, population structure.
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