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Australian Journal of Zoology Australian Journal of Zoology Society
Evolutionary, molecular and comparative zoology
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RESEARCH ARTICLE
Contents Vol 56(6)

Ecology of the rare but irruptive Pilliga mouse (Pseudomys pilligaensis). I. Population fluctuation and breeding season

Hideyuki Tokushima A B C , Stuart W. Green A and Peter J. Jarman A
+ Author Affiliations
- Author Affiliations

A Ecosystem Management, University of New England, Armidale, NSW 2351, Australia.

B Present address: 3-1-41-705 Hino, Kounan-ku, Yokohama, Kanagawa 234-0051, Japan.

C Corresponding author. Email: pilligaensis@yahoo.co.jp

Australian Journal of Zoology 56(6) 363-373 https://doi.org/10.1071/ZO08042
Submitted: 28 April 2008  Accepted: 16 January 2009   Published: 13 March 2009

Abstract

During a 4-year study in the Pilliga Scrub, trappable densities of the Pilliga mouse, Pseudomys pilligaensis (Muridae), were low before a wildfire in November 1997, higher in late 1999 and February 2000 (5–30 mice ha−1) and very high (up to 83 mice ha−1) in April 2000; however, the densities fell sharply by July 2000, remaining low (0–5 mice ha−1) until trapping ended in October 2001. Site-specific densities and their fluctuations differed among the four trapping sites, although fluctuations were broadly synchronised by the irruption peak. Within-site distribution changed as density fluctuated, from sparse to almost ubiquitous and back to sparse, and within-grid pre-irruption distributions did not predict those after the irruption. After the population decline, mice virtually disappeared from three of the four sites. The species’ breeding season spanned at least October–April; some females bred repeatedly within a season. Prolonged good rains soon after the wildfire may have facilitated the irruption. The study suggested that P. pilligaensis is distributed in disjunct patches of (refuge) habitat within its range except when environmental conditions are favourable, and that it is able to irrupt and become briefly ubiquitous before suddenly declining to a low density and sparse distribution. We suggest approaches for monitoring of this rare species.


Acknowledgements

We thank Mr Peter Brookhouse (NSW NPWS, Coonabarabran) for providing his fire-history data in the Pilliga Scrub and Dr Murray Efford (University of Otago) for giving us access to DENSITY 4.2.2, for using it to model densities from our data, and for discussing the model outputs so patiently.


References

Benjamini, Y. , and Hochberg, Y. (1995). Controlling the false discovery rate: a practical and powerful approach to multiple testing. Journal of the Royal Statistical Society: Series B 57, 289–300.
Breed B. , and Ford F. (2007). ‘Native Mice and Rats.’ (CSIRO Publishing: Melbourne.)

Brown, P. R. , and Singleton, G. R. (1999). Rate of increase as a function of rainfall for house mouse Mus domesticus populations in a cereal-growing region in southern Australia. Journal of Applied Ecology 36, 484–493.
| Crossref | GoogleScholarGoogle Scholar | Efford M. G. , Borchers D. L. , and Byrom A. E. (2008). Density estimation by spatially explicit capture–recapture: likelihood-based methods. In ‘Modeling Demographic Processes in Marked Populations’. (Eds D. L. Thomson, E. G. Cooch and M. Conroy.) pp. 257–272. (Springer: New York.)

Elton C. (1942). ‘Voles, Mice and Lemmings: Problems of Population Dynamics.’ (Clarendon Press: Oxford.)

Elton, C. , and Nicholson, M. (1942). The ten-year cycle in numbers of the lynx in Canada. Journal of Animal Ecology 11, 215–244.
| Crossref | GoogleScholarGoogle Scholar | Fowler J. , Cohen L. , and Jarvis P. (1998). ‘Practical Statistics for Field Biology.’ (John Wiley & Sons Ltd: Chichester, UK.)

Fox, B. J. (1982). Fire and mammalian secondary succession in an Australian coastal heath. Ecology 63, 1332–1341.
| Crossref | GoogleScholarGoogle Scholar | Fox B. J. (1995). Pilliga mouse, Pseudomys pilligaensis. In ‘The Mammals of Australia’. (Ed. R. Strahan.) pp. 616–617. (Reed Books: Sydney.)

Fox, B. J. , and Briscoe, D. A. (1980). Pseudomys pilligaensis, a new species of murid rodent from the Pilliga Scrub, northern New South Wales. Australian Mammalogy 3, 109–126.
Lee A. K. (1995). ‘Action Plan for Australian Rodents.’ (Environment Australia: Canberra.)

Letnic, M. , Tamayo, B. , and Dickman, C. R. (2005). The responses of mammals to La Niña (El Niño southern oscillation)-associated rainfall, predation, and wildfire in central Australia. Journal of Mammalogy 86, 689–703.
| Crossref | GoogleScholarGoogle Scholar | Newsome A. E. , and Corbett L. K. (1975). Outbreaks of rodents in semi-arid and arid Australia: causes, preventions and evolutionary considerations. In ‘Rodents in Desert Environments’. (Eds I. Prakash and P. K. Ghosh.) pp. 117–153. (Junk: The Hague.)

Predavec, M. (1994). Population dynamics and environmental changes during natural irruptions of Australian desert rodents. Wildlife Research 21, 569–582.
| Crossref | GoogleScholarGoogle Scholar | Tokushima H. (2002). Population, resource and habitat ecology of the Pilliga mouse (Pseudomys pilligaensis). Ph.D. Thesis, University of New England, Armidale.

Tokushima, H. , and Jarman, P. J. (2008). Ecology of the rare but irruptive Pilliga mouse (Pseudomys pilligaensis). II. Demography, home range and dispersal. Australian Journal of Zoology 56, 375–387.
| Crossref | GoogleScholarGoogle Scholar | Wass C. (1999). A small mammal monitoring programme for the Pilliga Nature Reserve in New South Wales. Thesis for Graduate Diploma of Natural Resources, University of New England, Armidale.

Wilson, B. A. (1991). The ecology of Pseudomys novaehollandiae (Waterhouse, 1843) in the eastern Otway ranges, Victoria. Wildlife Research 18, 233–247.
| Crossref | GoogleScholarGoogle Scholar |

Wilson, B. A. , White, N. M. , Hanley, A. , and Tidey, D. L. (2005). Population fluctuations of the New Holland mouse Pseudomys novaehollandiae at Wilson’s Promontory National Park, Victoria. Australian Mammalogy 27, 49–60.