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RESEARCH ARTICLE
Contents Vol 36(5)

Estimating the potential for reinvasion by mammalian pests through pest-exclusion fencing

Trevor A. Connolly A C , Tim D. Day B and Carolyn M. King A
+ Author Affiliations
- Author Affiliations

A Department of Biological Sciences, University of Waikato, Hamilton 3240, New Zealand.

B Xcluder™ Pest Proof Fencing Ltd, 99 Sala Street, Rotorua 3010, New Zealand.

C Corresponding author. Email: trev.connolly@xtra.co.nz

Wildlife Research 36(5) 410-421 https://doi.org/10.1071/WR09021
Submitted: 24 February 2009  Accepted: 29 April 2009   Published: 21 July 2009

Abstract

Pest mammals are completely excluded from Maungatautari Ecological Island, New Zealand, by a 47-km Xcluder pest-proof fence; however, they are commonly sighted directly outside, along the fenceline. Permanent pest exclusion relies on maintaining fence integrity, and enhancing knowledge of pest activity and behaviour at fenced reserves. We describe summer and winter periods of activity and behaviour of mammalian pests directly adjacent to the pest-proof fence. We (1) tested for the effects of adjacent habitat type, breach type and season on the rate of mammalian pest sightings directly at the fence, (2) determined how quickly pest mammals may locate a fence breach, and how likely they are to exploit it, and (3) developed a predictive model to help assess the probability of a pest gaining entry to the sanctuary if repair to a fence breach is delayed. Observations inside the rolled fence hood provided firm evidence that rats travel and forage extensively in this artificial although highly acceptable aboveground habitat, much more than on the ground. We confirm and emphasise that mammalian pests are constantly testing the pest-proof fence. Pests are very common directly outside the fence, and within 24 h there is a very high likelihood that a fence breach will be located and exploited. The greatest threat of reinvasion comes (1) nocturnally, (2) from rodents and (3) in the summer; however, these results also confirm that there is constant risk from multiple pest species, regardless of time of day or season.


Acknowledgements

The authors thank Xcluder™ Pest Proof Fencing Ltd for the use of equipment and ATV, Pim de Monchy and Tony Rolley (MEIT) for their support and assistance, and Ray Littler for statistical analysis. This research was approved by the Maungatautari Ecological Island Trust Science and Research Committee, and by University of Waikato Animal Ethics Committee Protocol 671.


References

Alterio, N. , Moller, H. , and Ratz, H. (1998). Movements and habitat use of feral house cats Felis catus, stoats Mustela erminea and ferrets Mustela furo, in grassland surrounding yellow-eyed penguin Megadyptes antipodes breeding areas in spring. Biological Conservation 83, 187–194.
| Crossref | GoogleScholarGoogle Scholar | Aviss M. , and Roberts A. (1994). ‘Pest Fences: Notes and Comments.’ Threatened Species Occassional Publication No. 5. (Department of Conservation: Wellington, New Zealand.)

Badan D. (1979). The ecology of mice (Mus musculus) in two forests near Auckland. M.Sc. Thesis, University of Auckland, Auckland, New Zealand.

Brockie R. E. , Bell B. D. , and White A. J. (1981). Age structure and mortality of possum Trichosurus vulpecula populations from New Zealand. In ‘Proceedings of the First Symposium on Marsupials in New Zealand’. (Ed. B. D. Bell.) pp. 63–85. (Victoria University: Wellington, New Zealand.)

Brown, K. P. , Innes, J. , and Shorten, R. (1993). Evidence that possums prey on and scavenge birds’ eggs, birds and mammals. Notornis 40, 169–177.
Clapperton B. K. , and Day T. D. (2001). Cost-effectiveness of exclusion fencing for stoat and other pest control compared with conventional control. DoC Science Internal Series. Department of Conservation, Wellington, New Zealand.

Clarkson B. D. (2002). Upland forests and special open habitats. In ‘Botany of the Waikato’. (Eds B. Clarkson, M. Merrett and T. Downs.) pp. 82–91. (Waikato Botanical Society Inc.: Hamilton, New Zealand.)

Crouchley, D. (1984). Stoat control on Maud Island 1982–1993. Ecological Management 2, 39–45.
Daniel M. J. (1978). Population ecology of ship and Norway rats in New Zealand. In ‘The Ecology and Control of Rodents in New Zealand Nature Reserves’. (Eds P. R. Dingwall, I. A. E. Atkinson and C. Hay.) pp. 145–154. NZ Department of Lands and Survey Information Series No. 4. (Department of Lands and Survey: Wellington, New Zealand.)

Day T. D. , and MacGibbon R. J. (2002). Escape behaviour and physical abilities of vertebrate pests towards electrified and non-electrified fences. Xcluder Pest Proof Fencing Company unpublished internal report. (Xcluder Pest Proof Fencing Company Ltd: Cambridge, New Zealand.)

Day T. D. , and MacGibbon R. J. (2007). Multiple-species exclusion fencing and technology for mainland sites. In ‘Managing Vertebrate Invasive Species: Proceedings of an International Symposium’. (Eds G. W. Witmer, W. C. Pitt and K. A. Fagerstone.) pp. 418–433. (USDA/APHIS/WS, National Wildlife Research Center: Fort Collins, CO.)

Fitzgerald, B. M. , and Karl, B. J. (1979). Foods of feral house cats (Felis catus L.) in forest of the Orongorongo Valley, Wellington. New Zealand Journal of Zoology 6, 107–126.
Harper G. A. (2002). Habitat selection by feral cats (Felis catus) and three rat species (Rattus spp.) on Stewart Island (Rakiura) and their impacts on native birds. Ph.D. Thesis, University of Otago, Dunedin, New Zealand.

Hooker, S. , and Innes, J. (1995). Ranging behaviour of forest-dwelling ship rats, Rattus rattus, and effects of poisoning with brodifacoum. New Zealand Journal of Zoology 22, 291–304.
Innes J. (2005). Ship rat. In ‘The Handbook of New Zealand Mammals’. (Ed. C. M. King.) pp. 187–203. (Oxford University Press: Melbourne.)

Innes, J. , and Barker, G. (1999). Ecological consequences of toxin use for mammalian pest control in New Zealand – an overview. New Zealand Journal of Ecology 23, 111–127.
Innes J. , Crook B. , and Jansen P. (1994). A time-lapse video camera system for detecting predators at nests of forest birds: a trial with North Island kokako. In ‘Proceedings of the Resource Technology 1994 Conference’. (Ed. I. Bishop.) pp. 439–448. (University of Melbourne: Melbourne.)

Innes, J. , Hay, R. , Flux, M. , Bradfield, P. , Speed, H. , and Jansen, P. (1999). Successful recovery of North Island kokako Callaeas cinerea wilsoni populations, by adaptive management. Biological Conservation 87, 201–214.
| Crossref | GoogleScholarGoogle Scholar | Jones C. , and Sanders M. D. (2005). European hedgehog. In ‘The Handbook of New Zealand Mammals’. (Ed. C. M. King.) pp. 81–94. (Oxford University Press: Melbourne.)

Karori Wildlife Sanctuary Trust (1999). ‘Karori Wildlife Sanctuary annual report.’ (Karori Wildlife Sanctuary Trust Inc.: Wellington, New Zealand.)

King, C. M. (2002). Cohort variation in the life-history parameters of stoats Mustela erminea in relation to fluctuating food resources: a challenge to boreal ecologists. Acta Theriologica 47, 225–244.
King C. M. , and Murphy E. C. (2005). Stoat. In ‘The Handbook of New Zealand Mammals’. (Ed. C. M. King.) pp. 261–287. (Oxford University Press: Melbourne.)

King, C. M. , Flux, M. , Innes, J. G. , and Fitzgerald, B. M. (1996). Population biology of small mammals in Pureora Forest Park: 1. Carnivores (Mustela erminea, M. furo, M. nivalis, and Felis catus). New Zealand Journal of Ecology 20, 241–251.
Long K. , and Robley A. (2004). Cost effective feral animal exclusion fencing for areas of high conservation value in Australia. Report for the Australian Government Department of the Environment and Heritage. Natural Heritage Trust, Melbourne.

MacGibbon R.J. (2001). ‘Maungatautari Ecological Restoration Project Plan.’ (Natural Logic Ltd: Taupo, New Zealand.)

McKillop, I. G. , and Silby, R. M. (1988). Animal behaviour at electric fences and the implications for management. Mammal Review 18, 91–103.
| Crossref | GoogleScholarGoogle Scholar | McQueen J. Ed. (2004). An ecological restoration plan for Maungatautari. Maungatautari Ecological Island Trust, Cambridge, New Zealand.

Murphy E. C. (1989). The demography of an island and mainland population of house mice in the Marlborough Sounds, New Zealand. Ph.D. Thesis, Victoria University, Wellington, New Zealand.

Murphy, E. C. , and Dowding, J. E. (1994). Range and diet of stoats (Mustela erminea) in a New Zealand beech forest. New Zealand Journal of Ecology 18, 11–18.
Norbury G. L. , and Flux J. E. C. (2005). Brown hare. In ‘The Handbook of New Zealand Mammals’. (Ed. C. M. King.) pp. 151–158. (Oxford University Press: Melbourne.)

Sanders M. , Brown K. P. , and Keedwell R. J. (2007). ‘Testing the Effects of a Predator-exclusion Fence on Predator Abundance and Wetland Bird Breeding Success at Ruataniwha Wetlands, Twizel.’ (Department of Conservation: Christchurch, New Zealand.)

Speedy C. , Day T. D. , and Innes J. (2007). Pest eradication technology – the critical partner to pest exclusion technology: the Maungatautari experience. In ‘Managing Vertebrate Invasive Species: Proceedings of an International Symposium’. (Eds G. W. Witmer, W. C. Pitt and K. A. Fagerstone.) pp. 115–126. (USDA/APHIS/WS, National Wildlife Research Center: Fort Collins, CO.)