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Article << Previous     |     Next >>   Contents Vol 63(1)

Cats (Felis catus) are more abundant and are the dominant predator of woylies (Bettongia penicillata) after sustained fox (Vulpes vulpes) control

Nicola J. Marlow A B E, Neil D. Thomas A B, Andrew A. E. Williams A B, Brian Macmahon B, John Lawson B, Yvette Hitchen B C, John Angus A B and Oliver Berry B C D

A Department of Parks and Wildlife, PO Box 51, Wanneroo, WA 6946, Australia.
B Invasive Animals Co-operative Research Centre, Adelaide, SA 5000, Australia.
C School of Animal Biology (M092), The University of Western Australia, Crawley, WA 6009, Australia.
D Present address: CSIRO Oceans and Atmosphere Flagship, PMB 5, Wembley, WA 6913, Australia.
E Corresponding author. Email: nickyandpeter@bigpond.com

Australian Journal of Zoology 63(1) 18-27 http://dx.doi.org/10.1071/ZO14024
Submitted: 10 April 2014  Accepted: 9 December 2014   Published: 21 January 2015

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The control of foxes (Vulpes vulpes) is a key component of many fauna recovery programs in Australia. A question crucial to the success of these programs is how fox control influences feral cat abundance and subsequently affects predation upon native fauna. Historically, this question has been difficult to address because invasive predators are typically challenging to monitor. Here, non-invasive DNA analysis was used to determine the fate of radio-collared woylies (Bettongia penicillata) in two reserves in a mesic environment where foxes had been controlled intensively for over two decades. Woylie trap success had increased more than 20-fold after fox baiting commenced in the 1980s but decreased precipitously in 2000. Ninety-eight monitored woylies were killed between 2006 and 2009. DNA analysis of swabs taken from radio-collars and carcasses of these woylies indicated that predation by cats (Felis catus) caused most mortalities (65%) and was three times the fox predation rate (21%). Also, indices of cat abundance were higher in fox-baited sites where foxes were less abundant. Predation on woylies by cats was greater than previously recognised and, by implication, may significantly reduce the effectiveness of fox control programs throughout Australia. Integrated fox and cat control is essential to ensure the success of fauna recovery programs.


Abbott, I. (2002). Origin and spread of the cat, Felis catus, on mainland Australia, with a discussion of the magnitude of its early impact on native fauna. Wildlife Research 29, 51–74.
CrossRef |

Algar, D., and Burrows, N. D. (2004). Feral cat control research: Western Shield review – February 2003. Conservation Science Western Australia 5, 131–163.

Algar, D., Angus, G. J., Williams, M. R., and Mellican, A. E. (2007). Influence of bait type, weather and prey abundance on bait uptake by feral cats (Felis catus) on Peron Peninsula, Western Australia. Conservation Science Western Australia 6, 109–149.

Allen, B. L., and Fleming, P. J. S. (2012). Reintroducing the dingo: the risk of dingo predation to threatened vertebrates of western New South Wales. Wildlife Research 39, 35–50.
CrossRef |

Allen, B. L., Fleming, P. J. S., Hayward, M., Allen, L. R., Engeman, R. M., Ballard, G., and Leung, L. K.-P. (2012). Top-predators as Biodiversity regulators: contemporary issues affecting knowledge and management of dingoes in Australia. In Biodiversity Enrichment in a Diverse World. (Ed. Lameed, G. A.) pp. 1–48. Intech, Rijeka, Croatia.

Allen, L., and Engeman, R. (2014). Evaluating and validating abundance monitoring methods in the absence of populations of known size: review and application to a passive tracking index. Environmental Science and Pollution Research International 21, 1–9.
CrossRef |

Allen, L., Engeman, R., and Krupa, H. (1996). Evaluation of three relative abundance indices for assessing dingo populations. Wildlife Research 23, 197–206.
CrossRef |

Anderson, D. R. (2003). Index values rarely constitute reliable information. The Journal of Wildlife Management 31, 288–291.

Armstrong, R. (2004). Baiting operations: Western Shield review- February 2003. Conservation Science Western Australia 5, 31–50.

Berry, O., and Sarre, S. D. (2007). Gel-free species identification using melt-curve analysis. Molecular Ecology Notes 7, 1–4.
CrossRef | CAS |

Berry, O., Algar, D., Angus, J., Hamilton, N., Hilmer, S., and Sutherland, D. (2012). Genetic Tagging Reveals a Significant Impact of Poison Baiting on an Invasive Species. The Journal of Wildlife Management 76, 729–739.
CrossRef |

Berry, O., Tatler, J., Hamilton, N., Hilmer, S., Hitchen, Y., and Algar, D. (2014). Slow recruitment in a red-fox population following poison baiting: a non-invasive mark-recapture analysis. Wildlife Research 40, 615–623.
CrossRef |

Bruce, J. S., and Twigg, L. E. (2005). The reintroduction, and subsequent impact, of rabbit haemorrhagic disease virus in a population of wild rabbits in south-western Australia. Wildlife Research 32, 139–150.
CrossRef |

Brunner, H., Moro, D., Wallis, R., and Andrasek, A. (1991). Comparison of the diets of foxes, dogs and cats in an urban park. Victorian Naturalist 108, 34–37.

Burrows, N. D., Algar, D., Robinson, A. D., Sinagra, J., Ward, B., and Liddlelow, G. (2003). Controlling introduced predators in the Gibson Desert of Western Australia. Journal of Arid Environments 55, 691–713.
CrossRef |

Catling, P. C. (1988). Similarities and contrasts in the diets of foxes, Vulpes vulpes, and cats, Felis catus, relative to fluctuating prey populations and drought. Australian Wildlife Research 15, 307–317.
CrossRef |

Christensen, P. E. S., and Burrows, N. D. (1995). Project Desert Dreaming: the reintroduction of mammals to the Gibson Desert. In ‘Reintroduction Biology of Australian and New Zealand fauna’. (Ed. M. Serena.) pp. 199–208 (Surrey Beatty and Sons: Chipping Norton.)

de Tores, P. J., and Marlow, N. (2012). The Relative Merits of Predator-Exclusion Fencing and Repeated Fox Baiting for Protection of Native Fauna: Five Case Studies from Western Australia. In ‘Fencing for Conservation: Restriction of Evolutionary Potential or Risposte to Threatening Processes?’. (Eds M. J. Somers and M. W. Hayward). pp. 21–42. (Springer: New York).

de Tores, P., and Start, A. N. (2008). Woylie, Bettongia penicillata. In ‘The Mammals of Australia’. 3rd edn. (Eds S. v. Dyck and R. Strahan.) pp. 291–292. (Reed New Holland: Sydney.)

de Tores, P., Hayward, M., and Rosier, S. (2004). The western ringtail possum, Pseudocheirus occidentalis, and the quokka, Setonix brachyurus, case studies: Western Shield review-February 2003. Conservation Science Western Australia 5, 235–257.

de Tores, P. J., Sutherland, D. R., Clarke, J. R., Hill, R. F., Garretson, S. W., Bloomfield, L., Strümpher, L., Glen, A., and Cruz, J. (2011). Assessment of risks to non-target species from an encapsulated toxin in a bait proposed for control of cats. Wildlife Research 38, 39–50.
CrossRef | CAS |

DEPI (2014a). Glenelg Ark. Retrieved July 2014 from Victorian Government Department of Environment and Primary Industries: http://www.dse.vic.gov.au/plants-and-animals/invasive-species/weeds-and-pests-projects/glenelg-ark

DEPI (2014b). Southern Ark. Retrieved July 2014 from Victorian Government Department of Environment and Primary Industries: http://www.dse.vic.gov.au/plants-and-animals/invasive-species/weeds-and-pests-projects/southern-ark

DEWHA (2008a). Threat abatement plan for predation by the European red fox, Department of the Environment, Water, Heritage and the Arts (DEWHA), Canberra.

DEWHA (2008b). Threat abatement plan for predation by feral cats. Department of Environment, Water, Heritage and the Arts (DEWHA) Canberra.

DEWNR (2014). Bounceback. Retrieved July 2014 from South Australian Department of Environment, Water and Natural Resources: http://www.environment.sa.gov.au/managing-natural-resources/Ecosystem_conservation/Bounceback

Dickman, C. R. (1996a). Overview of the impact of feral cats on Australian native fauna. Australian Nature Conservation Agency, Canberra. 92 pp.

Dickman, C. R. (1996b). Impact of exotic generalist predators on the native fauna of Australia. Wildlife Biology 2, 185–195.

Dickman, C. R., Glen, A. S., and Letnic, M. (2009). Reintroducing the dingo: can Australia’s conservation wastelands be restored? In ‘Reintroduction of Top-Order Predators. (Eds M. W. Hayward and M. J. Somers) pp. 238–269. (Wiley-Blackwell: Oxford, UK).

Edwards, G. P., de Preu, N. D., Shakeshaft, B. J., and Crealy, I. V. (2000). An evaluation of two methods of assessing feral cat and dingo abundance in central Australia. Wildlife Research 27, 143–149.
CrossRef |

Engeman, R. M. (2005). Indexing principles and a widely applicable paradigm for indexing animal populations. Wildlife Research 32, 203–210.
CrossRef |

Fleming, P. S., Allen, B. L., and Ballard, G. (2012). Seven considerations about dingoes as biodiversity engineers: the socioecological niches of dogs in Australia. Australian Mammalogy 34, 119–131.
CrossRef |

Forsyth, D. M., Robley, A. J., and Reddiex, B. (2005). Review of methods used to estimate the abundance of feral cats. Arthur Rylah Institute for Environmental Research,Department of Sustainability and Environment, Melbourne.

Friend, J. A. (1990). The numbat Myrmecobius fasciatus (Myrmecobiidae): history of decline and potential for recovery. Proceedings of the Ecological Society of Australia 16, 369–377.

Gibson, D. F., Lundie-Jenkins, G., Langford, D. G., Cole, J. R., Clarke, D. E., and Johnson, K. A. (1994). Predation by feral cats, Felis catus, on the rufous hare-wallaby, Lagorchestes hirsutus, in the Tanami Desert. Australian Mammalogy 17, 103–107.

Glen, A. S. (2012). Enough dogma: seeking the middle ground on the role of dingoes. Current Zoology 58, 856–858.

Glen, A. S., and Dickman, C. R. (2005). Complex interactions among mammalian carnivores in Australia, and their implications for wildlife management. Biological Reviews of the Cambridge Philosophical Society 80, 387–401.
CrossRef | PubMed |

Glen, A. S., de Tores, P. J., Sutherland, D. R., and Morris, K. D. (2009). Interactions between chuditch (Dasyurus geoffroii) and introduced predators: a review. Australian Journal of Zoology 57, 347–356.
CrossRef |

Glen, A. S., Berry, O., Sutherland, D. R., and Garretson, S. (2010). Forensic DNA confirms intraguild killing of a chuditch (Dasyurus geoffroii) by a feral cat (Felis catus). Conservation Genetics 11, 1099–1101.
CrossRef | CAS |

Groom, C. (2010). Justification for continued conservation efforts following the delisting of a threatened species: a case study of the woylie, Bettongia penicillata ogilbyi (Marsupialia: Potoroidae). Wildlife Research 37, 183–193.
CrossRef |

Hayward, M. W., and Marlow, N. (2014). Will dingoes really conserve wildlife and can our methods tell? Journal of Applied Ecology 51, 835–838.
CrossRef |

Hetherington, C. A., Algar, D., Mills, H., and Bencini, R. (2007). Increasing the target-specificity of ERADICAT® for feral cat (Felis catus) control by encapsulating a toxicant. Wildlife Research 34, 467–471.
CrossRef |

Holden, C., and Mutze, G. (2002). Impact of rabbit haemorrhagic disease on introduced predators in the Flinders Ranges, South Australia. Wildlife Research 29, 615–626.
CrossRef |

Hone, J. (1999). Fox control and rock-wallaby population dynamics- assumptions and hypotheses. Wildlife Research 26, 671–673.
CrossRef |

James, H., Acharya, A. B., Taylor, J. A., and Freak, M. J. (2002). A case of bitten bettongs. The Journal of Forensic Odonto-Stomatology 20, 10–12.
| CAS | PubMed |

Jarman, P. (1986). The red fox-an exotic large predator. In ‘The ecology of exotic animals and plants- some Australian case studies’. (Ed. R. L. Kitching) pp. 45–61. (Wiley and Sons: Brisbane).

Johnson, C. N., Isaac, J. L., and Fisher, D. O. (2007). Rarity of a top predator triggers continent-wide collapse of a mammal prey: dingoes and marsupials in Australia. Proceedings of the Royal Society B: Biological Sciences 274, 341–346.
CrossRef | PubMed |

Kennedy, M. S., Phillips, B. L., Legge, S., Murphy, S. A., and Faulkner, R. (2012). Do dingoes supress the activity of feral cats in northern Australia? Austral Ecology 37, 134–139.
CrossRef |

Kinnear, J. E., Onus, M. L., and Bromilow, R. N. (1988). Fox control and rock-wallaby population dynamics. Australian Wildlife Research 15, 435–450.
CrossRef |

Kinnear, J. E., Onus, M. L., and Sumner, N. R. (1998). Fox control and rock-wallaby population dynamics. II. An update. Wildlife Research 25, 81–88.
CrossRef |

Kinnear, J. E., Sumner, N. R., and Onus, M. L. (2002). The red fox in Australia – an exotic predator turned biological control agent. Biological Conservation 108, 335–359.
CrossRef |

Kinnear, J. E., Krebs, C. J., Pentland, C., Orell, P., Holme, C., and Karvinen, R. (2010). Predator-baiting experiments for the conservation of rock-wallabies in Western Australia: a 25-year review with recent advances. Wildlife Research 37, 57–67.
CrossRef |

Lapidge, S. J., and Henshall, S. (2001). Diet of foxes and cats, with evidence of predation on yellow-footed rock-wallabies (Petrogale xanthopus celeris) by foxes in southwestern Queensland. Australian Mammalogy 23, 47–52.
CrossRef |

Letnic, M., Crowther, M. S., and Koch, F. (2009). Does a top-predator provide an endangered rodent with refuge from an invasive mesopredator? Animal Conservation 12, 302–312.
CrossRef |

Letnic, M., Ritchie, E. G., and Dickman, C. R. (2012). Top predators as biodiversity regulators: the dingo Canis lupus dingo as a case study. Biological Reviews of the Cambridge Philosophical Society 87, 390–413.
CrossRef | PubMed |

Mahon, P. S., Banks, P. B., and Dickman, C. R. (1998). Population indices for feral carnivores: a critical study in sand-dune habitat, south-western Queensland. Wildlife Research 25, 11–22.
CrossRef |

Marlow, N. J., Thomas, N. D., Williams, A. A. E., Macmahon, B., and Lawson, J. (2014a). The development of a toxic 1080 bait, Pro-bait, for fox (Vulpes vulpes) control in Western Australia. Conservation Science Western Australia , .

Marlow, N. J., Thomas, N. D., Williams, A. A. E., Macmahon, B., and Lawson, J. (2014b). The diet of foxes (Vulpes vulpes) in fragmented Wheatbelt reserves in Western Australia: implications for woylies (Bettongia penicillata) and other native fauna. Conservation Science Western Australia , .

Martin, G. R., Twigg, L. E., and Robinson, D. J. (1996). Comparison of the diet of feral cats from rural and pastoral Western Australia. Wildlife Research 23, 475–484.
CrossRef |

Mawson, P. (2004). Translocations and fauna reconstruction sites: Western Shield review – February 2003. Conservation Science Western Australia 5, 122–130.

McKenzie, N. L., Burbidge, A. A., Baynes, A., Brereton, R. N., Dickman, C. R., Gordon, G., Gibson, L. A., Menkhorst, P. W., Robinson, A. C., Williams, M. R., and Woinarski, J. C. Z. (2007). Analysis of factors implicated in the recent decline of Australia’s mammal fauna. Journal of Biogeography 34, 597–611.
CrossRef |

Menotti-Raymond, M. A., David, V. A., Wachter, L. L., Butler, J. M., and O’Brien, S. J. (2005). An STR forensic typing system for genetic individualization of domestic cat (Felis catus) samples. Journal of Forensic Sciences 50, 1061–1070.
| CAS | PubMed |

Molsher, R. (1999). The ecology of feral cats, Felis catus, in open forest in New South Wales: interactions with food resources and foxes. Ph.D. Thesis, University of Sydney.

Molsher, R., Newsome, A., and Dickman, C. (1999). Feeding ecology and population dynamics of the feral cat (Felis catus) in relation to the availability of prey in central-eastern New South Wales. Wildlife Research 26, 593–607.
CrossRef |

Moseby, K. E., and Hill, B. M. (2011). The use of poison baits to control feral cats and red foxes in arid South Australia. I. Aerial baiting trials. Wildlife Research 38, 338–349.
CrossRef | CAS |

Moseby, K. E., Neilly, H., Read, J. L., and Crisp, H. A. (2012). Interactions between a Top Order predator and exotic mesopredators in the Australian rangelands. International Journal of Ecology 2012, 1–15.
CrossRef |

Newsome, T. M., and Ripple, W. J. (2014). A continental scale trophic cascade from wolves through coyotes to foxes. Journal of Animal Ecology , .
CrossRef | PubMed |

Orell, P. (2004). Fauna monitoring and staff training: Western Shield review – February 2003. Conservation Science Western Australia 5, 51–95.

Pacioni, C., Johansen, C. A., Mahony, T. J., O’Dea, M. A., Robertson, I. D., Wayne, A. F., and Ellis, T. (2014). A virological investigation into declining woylie populations. Australian Journal of Zoology 61, 446–453.
CrossRef |

Paetkau, D. (2004). The optimal number of markers in genetic capture–mark–recapture studies. The Journal of Wildlife Management 68, 449–452.
CrossRef |

Possingham, H., Jarman, P., and Kearns, A. (2004). Independent review of Western Shield – February 2003. Conservation Science Western Australia 5, 12–18.

Read, J., and Bowen, Z. (2001). Population dynamics, diet and aspects of the biology of feral cats and foxes in arid South Australia. Wildlife Research 28, 195–203.
CrossRef |

Reddiex, B., and Forsyth, D. M. (2006). Control of pest mammals for biodiversity protection in Australia. II. Reliability of knowledge. Wildlife Research 33, 711–717.
CrossRef |

Risbey, D. A., Calver, M. C., and Short, J. (1997). Control of feral cats for nature conservation. I. Field tests of four baiting methods. Wildlife Research 24, 319–326.
CrossRef |

Risbey, D. A., Calver, M. C., Short, J., Bradley, J. S., and Wright, I. W. (2000). The impact of cats and foxes on the small vertebrate fauna of Heirisson Prong, Western Australia. II. A field experiment. Wildlife Research 27, 223–235.
CrossRef |

Ritchie, E. G., and Johnson, C. N. (2009). Predator interactions, mesopredator release and biodiversity conservation. Ecology Letters 12, 982–998.
CrossRef | PubMed |

Robley, A., Reddiex, B., Arthur, T., Pech, R., and Forsyth, D. (2004). Interactions between feral cats, foxes, native carnivores, and rabbits in Australia. Arthur Rylah Insitute for Environmental Research, Department of Sustainability and Environment, Melbourne.

Sampson, J. C. (1971). The biology of Bettongia penicillata Gray, 1837. Ph.D. Thesis, University of Western Australia, Perth.

Saunders, G., and McLeod, L. (2007). ‘Improving Fox Management Strategies in Australia.’ (Bureau of Rural Sciences: Canberra.)

Short, J., and Smith, A. (1994). Mammal decline and recovery in Australia. Journal of Mammalogy 75, 288–297.
CrossRef |

Short, J., Turner, B., Risbey, D., and Carnamah, R. (1997). Control of feral cats for nature conservation. II. Population reduction by poisoning. Wildlife Research 24, 703–714.
CrossRef |

Short, J., Calver, M. C., and Risbey, D. A. (1999). The impact of feral cats and foxes on the small vertebrate fauna of Heirisson Prong, Western Australia. I. Exploring potential impact using diet analysis. Wildlife Research 26, 621–630.
CrossRef |

Short, J., Atkins, L., and Turner, B. (2005). Diagnosis of mammal decline in Western Australia, with particular emphasis on the possible role of feral cats and poison peas. Report to National Geographic Society by CSIRO Sustainable Ecosystems.

Thomson, P. C., and Algar, D. (2000). The uptake of dried meat baits by foxes and investigations of baiting rates in Western Australia. Wildlife Research 27, 451–456.
CrossRef |

Waits, L. P., Luikart, G, and Taberlet, P (2001). Estimating the probability of identity among genotypes in natural populations: cautions and guidelines. Molecular Ecology 10, 249–256.
| CAS | PubMed |

Wallach, A. D., and O’Neill, A. J. (2009). Threatened species indicate hot-spots of top-down regulation. Animal Biodiversity and Conservation 32, 127–133.

Wallach, A. D., Murray, B. R., and O’Neill, A. J. (2009). Can threatened species survive where the top predator is absent? Biological Conservation 142, 43–52.
CrossRef |

Wayne, A., Maxwell, M., Ward, C., Vellios, C., Ward, B., Liddelow, G., Wilson, I., Wayne, J., and Williams, M. (2013). Importance of getting the numbers right: quantifying the rapid and substantial decline of an abundant marsupial, Bettongia penicillata. Wildlife Research 40, 169–183.
CrossRef |

Wayne, A., Maxwell, M., Ward, C., Vellios, C., Wilson, I., Wayne, J., and Williams, M. R. (2014). Sudden and rapid decline of the abundant marsupial Bettongia penicillata in Australia. Oryx , .
CrossRef |

White, G. C. (2001). Program MARK. Mark and Recapture Survival Rate Estimation. Version 5.1, build 2600. Department of Fishery and Wildlife, Colorado State University, Fort Collins. Available at: http://www.cnr.colostate.edu/~gwhite/mark/mark.htm

Wilberg, M. J., and Dreher, B. P. (2004). Genecap: a program for analysis of multilocus genotype data for non-invasive sampling and capture–recapture population estimation. Molecular Ecology Notes 4, 783–785.
CrossRef |

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