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Title: Mating system and local dispersal patterns of an endangered potoroid, the northern bettong ('Bettongia tropica')
Contributor(s): Pope, Lisa C (author); Vernes, Karl A  (author)orcid ; Goldizen, Anne W (author); Johnson, Christopher N (author)
Publication Date: 2012
DOI: 10.1071/ZO12071
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Abstract: The northern bettong ('Bettongia tropica') (Potoroidae), is an endangered macropod with a restricted distribution. We combined radio-tracking and trapping data with micro satellite genotypes to infer the mating system and local dispersal patterns of this species, and discuss their relevance to trans locations. We defined the mating system as 'overlap promiscuity' (sensu Wittenberger 1979), though we cannot rule out serial monogamy. We found significant effects of proximity (average distance between parents = 190 m) and male weight, but not size, on the likelihood of paternity, suggesting that closer, heavier males have greater mating success. The average distance between putative pairs of relatives suggested that most dispersal occurred over short distances, with the distance between 'related' females significantly lower than that between related males (0.9 km versus 1.3 km). Aspatial auto correlation analysis showed high female relatedness across distances of up to 435 m, equivalent to half an average home range width. Conversely, male pairs had low relatedness across 0 to 870m. These results suggested that female young often settle next to their mother, while males avoid nesting within their father's home range. Both limited natal and 'mating' dispersal may have contributed to the strong genetic structure previously reported for this species.
Publication Type: Journal Article
Source of Publication: Australian Mammalogy, 60(4), p. 278-287
Publisher: CSIRO Publishing
Place of Publication: Collingwood, Australia
ISSN: 1836-7402
Field of Research (FOR): 050211 Wildlife and Habitat Management
050202 Conservation and Biodiversity
Socio-Economic Objective (SEO): 960806 Forest and Woodlands Flora, Fauna and Biodiversity
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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