Journal
JOURNAL OF WILDLIFE DISEASES
Volume 51, Issue 4, Pages 833-842Publisher
WILDLIFE DISEASE ASSOC, INC
DOI: 10.7589/2014-12-278
Keywords
Australia; Chlamydia; culling; koalas; mathematical modelling
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Funding
- Queensland University of Technology/Department of Employment, Economic Development and Innovation
- Australian National Health and Medical Research Council
- Australian Government, Department of Health
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Koala (Phascolarctos cinereus) populations in the wild are in sharp decline in Australia due to deforestation, road accidents, dog attacks, and disease from infection with sexually transmitted Chlamydia spp. Severely diseased koalas that are captured are euthanized for humane reasons because antibiotics are not effective. Paradoxically, we propose that euthanizing more koalas could help to increase koala population numbers. We investigated the potential impact of systematically euthanizing diseased koalas. Using data from a well-studied koala population, and an individual-based computer simulation model, we predict that such a program would result in a larger population of koalas after 7 yr than would exist without the program. If terminally diseased and sterile koalas are euthanized and other infected captured koalas are given antibiotics, chlamydial infection could be eliminated and population growth observed after 4 yr. The practical implementation of such a program would be facilitated with further development of tools to diagnose infection and internal disease in the field.
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