Arid
DOI10.1098/rsbl.2013.1014
Behavioural flexibility allows an invasive vertebrate to survive in a semi-arid environment
Webb, Jonathan K.1; Letnic, Mike2; Jessop, Tim S.3; Dempster, Tim3
通讯作者Webb, Jonathan K.
来源期刊BIOLOGY LETTERS
ISSN1744-9561
EISSN1744-957X
出版年2014
卷号10期号:2
英文摘要

Plasticity or evolution in behavioural responses are key attributes of successful animal invasions. In northern Australia, the invasive cane toad (Rhinella marina) recently invaded semi-arid regions. Here, cane toads endure repeated daily bouts of severe desiccation and thermal stress during the long dry season (April-October). We investigated whether cane toads have shifted their ancestral nocturnal rehydration behaviour to one that exploits water resources during the day. Such a shift in hydration behaviour could increase the fitness of individual toads by reducing exposure to desiccation and thermal stress suffered during the day even within terrestrial shelters. We used a novel method (acoustic tags) to monitor the daily hydration behaviour of 20 toads at two artificial reservoirs on Camfield station, Northern Territory. Remarkably, cane toads visited reservoirs to rehydrate during daylight hours, with peaks in activity between 9.00 and 17.00. This diurnal pattern of rehydration activity contrasts with nocturnal rehydration behaviour exhibited by adult toads in their native geographical range and more mesic parts of Australia. Our results demonstrate that cane toads phase shift a key behaviour to survive in a harsh semi-arid landscape. Behavioural phase shifts have rarely been reported in invasive species but could facilitate ongoing invasion success.


英文关键词invasive species cane toad Rhinella marina plasticity temporal niche shift
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000332378300007
WOS关键词AMPHIBIAN BUFO-MARINUS ; SPREAD ; TOADS
WOS类目Biology ; Ecology ; Evolutionary Biology
WOS研究方向Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181115
作者单位1.Univ Technol Sydney, Sch Environm, Sydney, NSW 2007, Australia;
2.Univ New S Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia;
3.Univ Melbourne, Dept Zool, Melbourne, Vic 3010, Australia
推荐引用方式
GB/T 7714
Webb, Jonathan K.,Letnic, Mike,Jessop, Tim S.,et al. Behavioural flexibility allows an invasive vertebrate to survive in a semi-arid environment[J],2014,10(2).
APA Webb, Jonathan K.,Letnic, Mike,Jessop, Tim S.,&Dempster, Tim.(2014).Behavioural flexibility allows an invasive vertebrate to survive in a semi-arid environment.BIOLOGY LETTERS,10(2).
MLA Webb, Jonathan K.,et al."Behavioural flexibility allows an invasive vertebrate to survive in a semi-arid environment".BIOLOGY LETTERS 10.2(2014).
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