Dietary partitioning in newly sympatric urban flying-foxes (Pteropus poliocephalus and Pteropus alecto)
Phoebe Griffith
A B D , Kerryn Parry-Jones C and Andrew A. Cunningham A
+ Author Affiliations
- Author Affiliations
A Institute of Zoology, Zoological Society of London, Regent’s Park, London, NW1 4RY, UK.
B Royal Veterinary College, University of London, Royal College Street, London, NW1 0TU, UK.
C School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia.
D Corresponding author. Email: phoebe.griffith@zoo.ox.ac.uk
Australian Mammalogy 42(3) 361-366 https://doi.org/10.1071/AM19047
Submitted: 12 July 2019 Accepted: 10 January 2020 Published: 6 February 2020
Abstract
The black flying-fox (Pteropus alecto) is extending its range southward and is now sympatric with the grey-headed flying-fox (P. poliocephalus) in New South Wales. Competition for food between the two species has been suggested to be a contributor to declines of the vulnerable grey-headed flying-fox. During winter 2016 the diet of both species was investigated over one night at four sites of sympatry, by microscopic analysis of faecal samples. Resource partitioning between the two species was found, with the black flying-fox either preferentially choosing to eat more fruit than the grey-headed flying-fox or being an inferior competitor for pollen and nectar. These results, though limited, do not support the hypothesis that the black flying-fox threatens the grey-headed flying-fox through food competition.
Additional keywords: fruit bat, global change, range expansion, resource competition.
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