Evidence of male-biased dispersal in eastern grey kangaroos (Macropus giganteus)

Coghlan, Brett A., Seddon, Jennifer M., Best, Emily C., Thomson, Vicki A. and Goldizen, Anne W. (2017) Evidence of male-biased dispersal in eastern grey kangaroos (Macropus giganteus). Australian Journal of Zoology, 64 5: 360-369. doi:10.1071/ZO16047

Author Coghlan, Brett A.
Seddon, Jennifer M.
Best, Emily C.
Thomson, Vicki A.
Goldizen, Anne W.
Title Evidence of male-biased dispersal in eastern grey kangaroos (Macropus giganteus)
Formatted title
Evidence of male-biased dispersal in eastern grey kangaroos (Macropus giganteus)
Journal name Australian Journal of Zoology   Check publisher's open access policy
ISSN 1446-5698
Publication date 2017-05-01
Sub-type Article (original research)
DOI 10.1071/ZO16047
Open Access Status Not yet assessed
Volume 64
Issue 5
Start page 360
End page 369
Total pages 10
Place of publication Clayton, VIC, Australia
Publisher C S I R O Publishing
Language eng
Formatted abstract
Dispersal reduces the likelihood of inbreeding and maintains gene flow among populations. Many polygynous mammals exhibit male-biased dispersal with female philopatry. Previous observational studies of eastern grey kangaroos (Macropus giganteus) suggested female philopatry while genetic studies showed weak structuring. We tested for sex-biased dispersal using two Queensland populations of kangaroos: one in Sundown National Park and the second at Elanda Point, Australia. Samples from 25 females and 23 males were collected from Sundown National Park, and analysed for partial mtDNA control region sequences (n = 47) and genotypes based on 12 microsatellite loci (n = 41). Samples from 18 males and 22 females from Elanda Point were genotyped at 8 loci and a subset sequenced for mtDNA (n = 19). Analyses showed higher mtDNA haplotype and nucleotide diversity in males than females within both populations, genetic relatedness based on microsatellite data was significantly higher among females, and microsatellite allelic richness was higher in males, suggesting that females are more likely to be philopatric and males more likely to disperse. These findings reinforce the value of including multiple types of genetic markers in dispersal analyses as mtDNA results showed higher male diversity (suggesting male dispersal) but males also contributed microsatellite alleles to the local population, masking differentiation between the sexes and confounding analyses.
Keyword Microsatellites
MtDNA control region
Sex-biased dispersal
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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