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Behavioural Determination of Visual Function in the Koala (Phascolarctos cinereus)

Schmid, Leisa M., Schmid, Katrina L., & Brown, Brian (1991) Behavioural Determination of Visual Function in the Koala (Phascolarctos cinereus). Wildlife Research, 18(3), pp. 367-374.

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Abstract

A behavioural estimate of the koala's dependence on vision was made using fabric hoods to degrade the vision of ten male koalas. Koalas were placed on the ground in a square enclosure, with a centrally placed 'tree'. With unobstructed vision, the koalas quickly travelled across the ground to the tree and climbed it. However, with severly reduced vision, the koalas tended to raise their forelegs when walking, taking high, reaching steps. The koala appears to require a certain minimum level of vision before climbing trees. Ocular chlamydial infection, which can cause a significant visual loss, may result in similar changes in behaviour and thus contribute to mortality.

Impact and interest:

2 citations in Web of Science®
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ID Code: 4151
Item Type: Journal Article
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: schmid.k@qut.edu.au
Keywords: Behavioural, visual function, koala, phascolarctos cinereus, Evolution, Marsupialia/, anatomy & histology, Retina/, anatomy & histology, Vision/, physiology, Animals, Male, Species Specificity, Visual Acuity/physiology
DOI: 10.1071/WR9910367
ISSN: 1035-3712
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 1991 CSIRO
Deposited On: 15 Jun 2006
Last Modified: 15 Jan 2009 17:03

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