Arid
DOI10.1071/WR17160
How many reptiles are killed by cats in Australia?
Woinarski, J. C. Z.1; Murphy, B. P.1; Palmer, R.2; Legge, S. M.3; Dickman, C. R.4; Doherty, T. S.5; Edwards, G.6; Nankivell, A.7; Read, J. L.8; Stokeld, D.9
通讯作者Woinarski, J. C. Z.
来源期刊WILDLIFE RESEARCH
ISSN1035-3712
EISSN1448-5494
出版年2018
卷号45期号:3页码:247-266
英文摘要

Context Feral cats (Felis catus) are a threat to biodiversity globally, but their impacts upon continental reptile faunas have been poorly resolved.


Aims To estimate the number of reptiles killed annually in Australia by cats and to list Australian reptile species known to be killed by cats.


Methods We used (1) data from >80 Australian studies of cat diet (collectively >10000 samples), and (2) estimates of the feral cat population size, to model and map the number of reptiles killed by feral cats.


Key results Feral cats in Australia’s natural environments kill 466million reptiles yr(-1) (95% CI; 271-1006million). The tally varies substantially among years, depending on changes in the cat population driven by rainfall in inland Australia. The number of reptiles killed by cats is highest in arid regions. On average, feral cats kill 61 reptiles km(-2) year(-1), and an individual feral cat kills 225 reptiles year(-1). The take of reptiles per cat is higher than reported for other continents. Reptiles occur at a higher incidence in cat diet than in the diet of Australia’s other main introduced predator, the European red fox (Vulpes vulpes). Based on a smaller sample size, we estimate 130million reptiles year(-1) are killed by feral cats in highly modified landscapes, and 53million reptiles year(-1) by pet cats, summing to 649million reptiles year(-1) killed by all cats. Predation by cats is reported for 258 Australian reptile species (about one-quarter of described species), including 11 threatened species.


Conclusions Cat predation exerts a considerable ongoing toll on Australian reptiles. However, it remains challenging to interpret the impact of this predation in terms of population viability or conservation concern for Australian reptiles, because population size is unknown for most Australian reptile species, mortality rates due to cats will vary across reptile species and because there is likely to be marked variation among reptile species in their capability to sustain any particular predation rate.


Implications This study provides a well grounded estimate of the numbers of reptiles killed by cats, but intensive studies of individual reptile species are required to contextualise the conservation consequences of such predation.


英文关键词conservation diet introduced predator island mortality predation
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000435651100006
WOS关键词ARID SOUTH-AUSTRALIA ; FRESH-WATER TURTLE ; FELIS-CATUS ; FERAL CATS ; POPULATION-DYNAMICS ; WESTERN-AUSTRALIA ; HOUSE CATS ; INTRODUCED PREDATORS ; CHRISTMAS-ISLAND ; MESOPREDATOR RELEASE
WOS类目Ecology ; Zoology
WOS研究方向Environmental Sciences & Ecology ; Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/213745
作者单位1.Charles Darwin Univ, Res Inst Environm & Livelihoods, NESP Threatened Species Recovery Hub, Casuarina, NT 0909, Australia;
2.Dept Biodivers Conservat & Attract, Locked Bag 104, Bentley, WA 6983, Australia;
3.Univ Queensland, Ctr Biodivers & Conservat Res, NESP Threatened Species Recovery Hub, St Lucia, Qld 4072, Australia;
4.Univ Sydney, Sch Life & Environm Sci A08, Desert Ecol Res Grp, NESP Threatened Species Recovery Hub, Sydney, NSW 2006, Australia;
5.Deakin Univ, Sch Life & Environm Sci, Ctr Integrat Ecol Burwood Campus, Geelong, Vic 3220, Australia;
6.Dept Environm & Nat Resources, POB 1120, Alice Springs, NT 0871, Australia;
7.Nat Fdn SA Inc, POB 448, Hindmarsh, SA 5007, Australia;
8.Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5000, Australia;
9.Dept Environm & Nat Resources, Berrimah, NT 0820, Australia
推荐引用方式
GB/T 7714
Woinarski, J. C. Z.,Murphy, B. P.,Palmer, R.,et al. How many reptiles are killed by cats in Australia?[J],2018,45(3):247-266.
APA Woinarski, J. C. Z..,Murphy, B. P..,Palmer, R..,Legge, S. M..,Dickman, C. R..,...&Stokeld, D..(2018).How many reptiles are killed by cats in Australia?.WILDLIFE RESEARCH,45(3),247-266.
MLA Woinarski, J. C. Z.,et al."How many reptiles are killed by cats in Australia?".WILDLIFE RESEARCH 45.3(2018):247-266.
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