Developing guidelines for the use of traps to capture koalas
Kita R. Ashman
A B and Desley A. Whisson A
+ Author Affiliations
- Author Affiliations
A Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Vic. 3216, Australia.
B Corresponding author: Email: k.ashman@research.deakin.edu.au
Australian Mammalogy 42(3) 380-384 https://doi.org/10.1071/AM20018
Submitted: 11 February 2020 Accepted: 16 February 2020 Published: 11 March 2020
Abstract
Capture of wildlife is essential both for research and management, and minimising the amount of stress an animal experiences during capture is important. We examined the behavioural response of koalas to cage traps to improve protocols for trapping koalas. We used heat- and motion-sensing cameras to record the behaviour of koalas in traps, and the duration spent in traps. Behavioural responses were scored on a scale of 0 (no apparent response) to 3 (heightened response) from videos. We successfully trapped a koala in 19 of 21 attempts. For 12 occasions when traps were monitored with cameras, koalas spent 6.3–181.2 min in traps and 8 of 12 koalas displayed heightened behavioural responses (score of ≥2). The frequency of response scores did not vary between males and females and was not influenced by trapped duration. We found that traps were effective for capturing koalas; however, to minimise overt behavioural responses by trapped koalas, trap-check intervals need to be as short as possible. We recommend the use of trap-trigger devices to alert personnel when a koala is trapped. The addition of such devices in trapping practices may reduce potential for adverse behavioural responses and improve the cost-efficacy of trapping.
Additional keywords: passive capture methods, Phascolarctos cinereus.
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