Conservation of the platypus, Ornithorhynchus anatinus: Threats and challenges
Keywords:
distribution, abundance, research, managementAbstract
The platypus (Ornithorhynchus anatinus) is an Australian icon. It is an integral part of the biodiversity of many eastern Australian freshwater ecosystems and is protected by legislation in all States in which it occurs. Its conservation is of considerable importance not only because of its unique features, status and niche but also because it is the only living representative of a significant lineage of platypus-like animals with a 60 million year fossil history. As a result of its specific habitat requirements it is affected by many of the widely recognised threatening processes operating in Australian limnological systems. In spite of these threatening processes, the species has continued to inhabit and reproduce in considerably degraded environments. The present overall distribution of the platypus appears to be little different from pre-European times. There are, however, now almost certainly no naturally occurring populations in South Australia, where it once occurred, and its distribution has apparently shrunk in the lower reaches of the Murray and Murrumbidgee River systems in Victoria and New South Wales. Despite being considered common throughout its current distribution its abundance is not readily measured and therefore its future conservation status is not easily predicted. Several studies have reported fragmentation of platypus distribution within individual river systems. This has been attributed to poor land management practices associated with stream bank erosion, loss of riparian vegetation and channel sedimentation. There is currently also evidence for adverse effects of river regulation and impoundments, introduced species, poor water quality, fisheries by-catch mortality and disease on platypus populations, but none of these has been well studied. Investigations of these aspects of the species’ biology and interaction with human activities are research priorities, while management priorities include the development and implementation of strategies aimed at reducing the effects of these human activities on the platypus and its habitat.
References
Allen, G. R., Midgley, S. H. and Allen, M. 2002. Field Guide to the Freshwater Fishes of Australia, Perth: Western Australian Museum.
Australian Platypus Conservancy. 1997. Platypus in the willows. Ripples, 9: 2
Australian Platypus Conservancy. 1999a. Wimmera update. Ripples, 13: 2
Australian Platypus Conservancy. 1999b. New wetland welcomes the platypus. Ripples, 15: 3
Australian Platypus Conservancy. 2000. Barwon platypus study. Ripples, 16: 2
Australian Platypus Conservancy. 2001. Recent APC platypus survey results: Hopkins and Wimmera rivers. Ripples, 18: 2
Ball, J., Donnelley, L., Erlanger, P., Evans, R., Kollmorgen, A., Neal, B. and Shirley, M. 2001. Inland Waters, Australia State of the Environment Report 2001. (Theme Report), Canberra: CSIRO Publishing on behalf of the Department of the Environment and Heritage.
Bethge, P., Munks, S. and Nicol, S. 2001. Energetics and locomotion in the platypus, Ornithorhynchus anatinus. Journal of Comparative Physiology-B, Biochemical, Systematic and Environmental Physiology, 171: 497–506.
Bishop, K. A. 2000. Sooley Dam Upgrade Environmental Impact Statement: Fish Ecology Study, Connell Wagner Pty. Ltd. on behalf of New South Wales Department of Public Works and Services and the Goulburn City Council. Unpublished report for
Blanch, S., ed. The way forward on weirs. Proceedings of Meeting held at Royal North Shore Hospital. August 18-19 2000, St. Leonards. Sydney: Inland Rivers Network.
Bobbi, C. River management arising from willow removal (where there's a willow there's a way). Proceedings of the Second Australian Stream Management Conference on the Challenge of Rehabilitating Australia's Streams. Edited by: Rutherford, I. and Hartley, R. Vol. 1, pp.69–73. Adelaide: CRC for Catchment Hydrology.
Boulton, A. J. and Brock, M. A. 1999. Australian Freshwater Ecology. Processes and Management, Glen Osmond, , South Australia: Gleneagles Publishing.
Bowmer, K. 1998. “Water: Quality and quantity.”. In Agriculture and the Environmental Imperative, Edited by: Pratley, J. and Robertson, A. 35–69. Melbourne: CSIRO Publishing.
Brierley, G. J., Cohen, T., Fryirs, K. and Brooks, A. 1999. Post-European changes to the fluvial geomorphology of Bega catchment, Australia: implications for river ecology. Freshwater Biology, 41: 839–848.
Brooks, A. P. and Brierley, G. J. 1997. Geomorphic responses of lower Bega Riverto catchment disturbance, 1851-1926. Geomorphology, 18: 291–304.
Bunn, S., Mosich, T. and Davies, P. M. 1999. “Temperature and light”. In Riparian Land Management Technical Guidelines, Edited by: Lovett, S. and Price, P. Vol. VoI 1, 17–24. Canberra: Land and Water Resources Research and Development Corporation.
Campbell, I. C. and Doeg, T. J. 1989. Impact of timber harvesting and production on streams: A review. Australian Journal of Marine and Freshwater Research, 40: 519–539.
Caughley, G. and Gunn, A. 1996. Conservation Biology in Theory and Practice, Cambridge, Massachusetts: Blackwell.
Connolly, J. H., Obendorf, D. L., Whittington, R. J. and Muir, D. B. 1998. Cases of morbidity and mortality in platypus (Ornithorhynchus anatinus) from Tasmania, with particular reference to Mucor amphibiorum infection. Australian Mammalogy, 20: 177–187.
Erskine, W. D., Terrazzolo, N. and Wagner, R. F. 1999. River rehabilitation from hydrogeomorphic impacts of a large hydro-electric power project: Snowy River, Australia. Regulated Rivers, 15: 3–24.
Goldney, D. 1998. The distribution and abundance of platypuses in the Thredbo River-Lake Jindabyne system. Australian Mammalogy, 20: 302–303.
Grant, T. R. 1983. Body temperature of free-ranging platypuses, Ornithorhynchus anatinus, with observations on their use of burrows. Australian Journal of Zoology, 31: 117–122.
Grant, T. R. 1991. The biology and management of the platypus (Ornithorhynchus anatinus) in New South Wales, Species Management Report # 5 Hurstville, New South Wales: NSW National Parks and Wildlife Service.
Grant, T. R. 1992a. “Historical and current distribution of the platypus, Ornithorhynchus anatinus, in Australia.”. In Platypus and Echidnas, Edited by: Augee, M. L. 232–254. Sydney: Royal Zoological Society of NSW.
Grant, T. R. 1992b. “Captures, movements and dispersal of platypuses, Ornithorhynchus anatinus, in the Shoalhaven River, New South Wales, with evaluation of capture and marking techniques.”. In Platypus and Echidnas, Edited by: Augee, M. L. 255–262. Sydney: Royal Zoological Society of NSW.
Grant, T. R. 1993. The past and present freshwater fishery in New South Wales and the distribution and status of the platypus, Ornithorhynchus anatinus. Australian Zoologist, 29: 105–113.
Grant, T. R. 1995. The Platypus. A Unique Mammal , 2nd edition, Sydney: University of NSW Press.
Grant, T. R. 1998. Current and historical distribution of platypuses (Ornithorhynchus anatinus) around Sydney. Australian Mammalogy, 20: 257–266.
Grant, T. R. 1999. “Distribution of platypuses and platypus habitat in the Richmond River estuary and investigation of salinity tolerance in the species. Appendix C.”. In An investigation of the potential ecological impacts of freshwater extraction from the Richmond River tidal pool, Water Research Laboratory Technical Report 99/51 Edited by: Peirson, W. L., Bishop, K. A., Nittim, R. and Chadwick, M. J. Sydney: University of New South Wales.
Grant, T. R. 2002a. Platypus (Ornithorhynchus anatinus) survey of the upper Georges River, New South Wales, Campbelltown, NSW: Report to National Parks Association of NSW. Macarthur Branch.
Grant, T. R. 2002b. Platypus studies in the Wingecarribee River and Glenquarry-Doudles Folly Creeks-Nepean River SystemMonitoring April-May 2002, Sydney: Report to the Sydney Catchment Authority.
Grant, T. R. and Bishop, K. A. 1998. Instream flow requirements for the platypus (Ornithorhynchus anatinus). An assessment strategy. Australian Mammalogy, 20: 267–280.
Grant, T. R. and Carrick, F. N. 1978. Some aspects of the ecology of the platypus, Ornithorhynchus anatinus, in the upper Shoalhaven River, New South Wales. Australian Zoologist, 20: 151–199.
Grant, T. R. and Dawson, T. J. 1978a. Temperature regulation in the platypus, Ornithorhynchus anatinus, maintenance of body temperature in air and water. Physiological Zoology, 51: 1–6.
Grant, T. R. and Dawson, T. J. 1978b. Temperature regulation in the platypus, Ornithorhynchus anatinus, production and loss of metabolic heat in air and water. Physiological Zoology, 51: 315–332.
Grant, T. R. and Denny, M. J. S. 1991. “Distribution of the platypus in Australia with guidelines for management”. In Report to Australian National Parks and Wildlife Service, Oberen, New South Wales: Mount King Ecological Surveys.
Grant, T. R. and Temple-Smith, P. D. 1998. Field biology of the platypus (Ornithorhynchus anatinus)-historical and current perspectives. Transactions of the Royal Society of London. Series B., 353: 1081–1091.
Grant, T. R., Williams, R. and Carrick, F. N. 1977. Maintenance of the platypus, Ornithorhynchus anatinus in captivity under laboratory conditions. Australian Zoologist, 19: 117–124.
Grant, T. R., Gehrke, P. C., Harris, J. H. and Hartley, S. 2000. Distribution of the platypus (Ornithorhynchus anatinus) in New South Wales: Results of the 1994-96 New South Wales Rivers survey. Australian Mammalogy, 21: 177–184.
Crowns, I. O. and Davis, T. A. 1991. Comparison of the macroinvertebrate communities in streams in logged and undisturbed catchments eight years after harvesting. Australian Journal of Marine and Freshwater Research, 42: 689–706.
Crowns, I. O. and Davis, J. A. 1994. Effects of forestry activities (clear felling) on stream macroinvertebrates in south western Australia. Australian Journal of Marine and Freshwater Research, 45: 963–1022.
Gust, N. and Handasyde, K. 1995. Seasonal variation in the ranging behaviour of the platypus (Ornithorhynchus anatinus) on the Goulburn River; Victoria. Australian Journal of Zoology, 43: 193–208.
Hogg, I. D. and Morris, R. H. 1986. Murrumbidgee River water quality: Performance monitoring. A report to the National Capital Development Commission in response to Brief No. 142/86, Belconnen, ACT: Water Research Centre. Canberra College of Advanced Education.
Holland, N. and Jackson, S. M. 2002. Reproductive behaviour and food consumption associated with captive breeding of platypus (Ornithorhynchus anatinus). Journal of Zoology, London, 256: 279–288.
Krueger, B., Hunter, S. and Serena, M. 1992. Husbandry, diet and behaviour of platypus Ornithorhynchus anatinus. International Zoo Yearbook, 31: 64–71.
Leadbitter, D. 2001. Bycatch Solutions. A Handbook for Fishers in Non-Trawl Fisheries, Pyrmont, New South Wales, , Australia: Oceanwatch and Fisheries Research and Development Corporation. FRDC Project No. 98201
Lintermans, M. 1998. The status and distribution of the platypus (Ornithorhynchus anatinus) in the Australian Capital Territory with notes on some local declines. Australian Mammalogy, 20: 306
Lunney, D., Grant, T., Matthews, A., Esson, C., Moon, C. and Ellis, M. 1998. A community-based assessment of the distribution of the platypus (Ornithorhynchus anatinus) in the Eden region of New South Wales. Australian Mammalogy, 20: 239–250.
Menkhorst, P. W., ed. 1995. Mammals of Victoria. Distribution, Ecology and Conservation, Melbourne: Oxford University Press.
Mooney, N. and Spencer, C. 2000. Why did the platypus cross the road?. Australian Mammalogy, 21: 264
Moyal, A. 2001. Platypus. The Extraordinary Story of Haw aCurious Creature Baffled the World, Crows Nest, New South Wales: Alien and Unwin.
Munday, B. L., Stewart, N. J. and Sodergren, A. 1998a. Occurrence of polychlorinated biphenyls and organochlorine pesticides in platypuses (Ornithorhynchus anatimis) in Tasmania. Australian Veterinary Journal, 76: 129–130.
Munday, B. L., Whittington, R. J. and Stewart, N. J. 1998b. Disease conditions and subclinical infections in the platypus (Ornithorhynchus anatimis). Transactions of the Royal Society of London. Series B., 353: 1093–1099.
Munks, S. A., Otley, H. M., Bethge, P. and Jackson, J. 2000. Reproduction, diet and daily energy expenditure of the platypus in a sub-alpine Tasmanien lake. Australian Mammalogy, 21(2): 260–261.
Musser, A. M. 1999. Diversity and relationships of living and extinct monotremes. Australian Mammalogy, 21: 8–9.
New South Wales Department of Land and Water Conservation. 1997. NSW Weirs Policy, Sydney: DLWC.
New South Wales Environment Protection Authority. 2000. New South Wales State of the Environment 2000 Report, Sydney: Environment Protection Authority.
O'Connor, K. 2001. Rivers Alive. A Queensland Conservation Council Newsletter, Autumn: 4–5. 7
Pettigrew, J. D., Manger, P. R. and Fine, S. L. R. 1998. The sensory world of the platypus. Transactions of the Royal Society of London. Series B., 353: 1199–1210.
Pettigrove, V. 2000. A future for Melbourne's platypus. Water September/October. Journal of Australian Water Association, : 51–54.
Raldck, R., Rakick, B., Cook, L. and Munks, S. 2001. Observations of a platypus foraging in the sea and hunting by a wedge-tailed eagle. Tasmanien Naturalist, 123: 3–4.
Read, M. G. and Barmuta, L. A. 1999. Comparisons of benthic communities adjacent to riparian eucalypt and introduced willow vegetation. Freshwater Biology, 42: 359–374.
Rohweder, D. A. and Baverstock, P. R. 1999. Distribution of platypus, Ornithorhynchus anatimis, in the Richmond River Catchment, northern New South Wales. Australian Zoologist, 31: 30–37.
Rosen, S. 1995. Losing Ground. An Environmental History of the Hawkesbury-Nepean Catchment, Sydney: Hale and Ironmonger.
Rutherford, I. and Abernethy, B. 1999. “Controlling stream erosion.”. In Riparian Land Management Technical Guidelines, Edited by: Lovett, S. and Price, P. Vol. VoI 2, 33–48. Canberra: Land and Water Resources Research and Development Corporation.
Rutherford, I., Abernethy, B. and Presser, I. 1999. “Stream erosion.”. In Riparian Land Management Technical Guidelines, Edited by: Lovett, S. and Price, P. Vol. VoI 1, 61–78. Canberra: Land and Water Resources Research and Development Corporation.
Schiller, C. B. and Harris, J. H. 2001. “Native and alien fish.”. In Rivers as Ecological Systems: The Murray-Darling Basin, Edited by: Young, W. J. 229–258. Canberra: Murray-Darling Basin Commission.
Schiller, C. B., Bruce, A. and Gehrke, P. C. 1997. “Distribution and abundance of native fish.”. In Fish and Rivers in Stress: The New South Wales Rivers Survey, Edited by: Harris, J. H. and Gehrke, P. C. 67–117. Cronulla, New South Wales: NSW Fisheries Office of Conservation and Cooperative Research Centre for Freshwater Ecology.
Schulze, D. J. and Walker, K. F. 1997. Riparian eucalypts and willows and their significance for aquatic invertebrates in the River Murray, South Australia. Regulated Rivers, 13: 557–578.
Serena, M. 1994. Use of time and space by platypus (Ornttkorhynekus anatinus; Monotremata) along a Victorian stream. Journal of Zoology (London), 232: 117–131.
Serena, M. 1996. Metropolitan monotremes. Nature Australia, 25: 28–32.
Serena, M. and Willams, G. A. 1997. Population attributes of platypus (Ornithorkynchus anatinus) in Flinders Chase National Park, Kangaroo Island. South Australian Naturalist, 72: 28–34.
Serena, M. and Williams, G. A. 1998. Rubber and plastic rubbish: a summary of hazard posed to platypus Ornithorkynchus anatinus in suburban habitats. Victorian Naturalist, 115: 47–49.
Serena, M., Williams, G., Thomas, J. and Worley, M. 1999. Effect of a flood retardation basin culvert on movements by platypus, Ornithorkynchus anatinus. Victorian Naturalist, 116: 54–57.
Serena, M., Worley, M., Swinnerton, M. and Williams, G. 2001. Effect of food availability and habitat on the distribution of platypus (Ornithorhynchus anatinus) foraging activity. Australian Journal of Zoology, 49: 263–277.
State of the Environment Advisory Council. 1996. Australia. State of the Environment, Collingwood, Victoria: CSIRO Publishing.
Stone, A. C. 1983. Distribution of the platypus (Ornithorhynchus anatinus) in Queensland, Brisbane: National Parks and Wildlife Service.
Temple-Smith, P. D. and Grant, T. R. 2001. Uncertain breeding: a short history of reproduction in monotremes. Reproduction, Fertility and Development, 13: 487–497.
Turnbull, R. W. 1998. Distribution of the platypus(Ornithorhynchus anatinus) in the Bombala River catchment, south-eastern New South Wales. Australian Mammalogy, 20: 251–256.
Tyson, B. M. 1980. Road killed platypus. Tasmanien Naturalist, 60: 8
Whittington, J. and Hillman, T. 1999. Sustainable Rivers: The Cap and Environmental Flows. CRC for Freshwater Ecology, Albury,
Whittington, R. J. 1992. “The role of disease in the population biology of monotremes.”. In Platypus and Echidnas, Edited by: Augee, M. L. 285–293. Sydney: Royal Zoological Society of NSW.
Whittington, R. J., Connolly, J. H., Obendorf, D. L., Emmins, J., Grant, T. R. and Handasyde, K. A. 2002. Serological responses against the pathogenic fungus Mucor amphibiorum in populations of platypus (Ornithorhynchus anatinus) with and without ulcerative mycotic dermatitis. Veterinary Microbiology, 87: 59–71.
Williams, W. D. 1983. Life in Inland Waters, Melbourne: Blackwells Scientific Publications.
Williams, G. and Serena, M. 1999. Living with Platypus. A Practical Guide to the Conservation of a Very Special Australian, Whittlesea, Victoria: Australian Platypus Conservancy.
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