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Australian Journal of Zoology Australian Journal of Zoology Society
Evolutionary, molecular and comparative zoology
RESEARCH ARTICLE

The effect of environmental variables on the activity patterns of the southern hairy-nosed wombat (Lasiorhinus latifrons) in captivity: onset, duration and cessation of activity

Lindsay A. Hogan A B E , Steve D. Johnston A , Allan T. Lisle A , Alan B. Horsup C , Tina Janssen D and Clive J. C. Phillips B
+ Author Affiliations
- Author Affiliations

A School of Agriculture and Food Sciences, The University of Queensland, Gatton, Qld 4343, Australia.

B Centre for Animal Welfare and Ethics, School of Veterinary Science, The University of Queensland, Gatton, Qld 4343, Australia.

C Queensland Department of Environment and Resource Management, Rockhampton, Qld 4701, Australia.

D Rockhampton Botanical Gardens and Zoo, Rockhampton, Qld 4700, Australia.

E Corresponding author. Email: lindsay.hogan@uqconnect.edu.au

Australian Journal of Zoology 59(1) 35-41 https://doi.org/10.1071/ZO11006
Submitted: 1 February 2011  Accepted: 24 May 2011   Published: 8 July 2011

Abstract

The influence of scotoperiod, ambient temperature and humidity on the activity of captive wombats was examined to differentiate environmental influence from that pertaining to food availability. The activity of 12 wombats (Lasiorhinus latifrons) housed at Rockhampton Zoo was remotely monitored by digital video-surveillance for one year, with environmental variables simultaneously recorded via dataloggers. Mean proportion of total daily time spent active was 18.2 ± 1.8%. Mean daily time spent active varied seasonally according to changes in temperature and humidity. Mean daily activity was greater during winter (301 ± 17 min) and spring (295 ± 16 min), than summer (234 ± 16 min) and autumn (238 ± 15 min) with differences due to a decrease in the number and length of activity bouts in summer and autumn; presumably these results reflect a need to maintain heat balance associated with exposure to elevated temperatures. Activity was positively correlated with temperature during winter (r = 0.60) and spring (r = 0.52) but negatively correlated during summer (r = –0.58) and autumn (r = –0.49), suggesting the existence of a thermoneutral zone where activity is maximised. We conclude that activity in captive wombats is influenced by environmental variables.

Additional keywords: circadian rhythm, emergence, nocturnalism, thermoregulation.


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