Relationship between body weight and elevation in Leadbeater’s possum (Gymnobelideus leadbeateri)
Jessica L. Williams
A , Dan Harley B , Darcy Watchorn A B C , Lachlan McBurney A and David B. Lindenmayer A *
+ Author Affiliations
- Author Affiliations
A Fenner School of Environment and Society, The Australian National University, Canberra, ACT 2601, Australia.
B Wildlife Conservation and Science Department, Zoos Victoria, Healesville, Vic. 3777, Australia.
C Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Burwood, Vic. 3125, Australia.
Australian Journal of Zoology 69(5) 167-174 https://doi.org/10.1071/ZO21042
Submitted: 22 October 2021 Accepted: 2 May 2022 Published: 20 June 2022
© 2021 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)
Abstract
The body size of mammals is influenced by several evolutionary, morphological, physiological and ecological factors. Studies of body size can provide insight into the processes underlying observed variation in patterns of mammal morphology. We sought to determine if body weight in Leadbeater’s possum (Gymnobelideus leadbeateri) is related to environmental variables and/or sex. Using linear regression modelling, we quantified the influence on body weight of broadscale geographic variables such as latitude and elevation, site-level indicators of forest productivity (forest type, slope, aspect and topographic wetness) and an individual-level variable (sex). We found that body weight was significantly associated with elevation and sex, with individuals being heavier at higher elevations and males (on average) being heavier than females. Monitoring body weight changes over time within particular forest types will be valuable, given the variations in temperature and resource productivity throughout the range of Leadbeater’s possum that are likely to arise from climate change.
Keywords: body size, body weight, elevation, Leadbeater’s possum, sex, marsupial, Bergmann’s rule, Victorian Central Highlands.
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