干旱区生态环境知识资源中心(Arid): A nomadic avian predator displays flexibility in prey choice during episodic outbreaks of rodents in arid Australia

Arid

DOI	10.1007/s00442-021-04926-7
	A nomadic avian predator displays flexibility in prey choice during episodic outbreaks of rodents in arid Australia
	Pavey, Chris R.
通讯作者	Pavey, CR (corresponding author), CSIRO Land & Water, PMB 44, Darwin, NT 0822, Australia.
来源期刊	OECOLOGIA
ISSN	0029-8549
EISSN	1432-1939
出版年	2021
卷号	196 期号:1 页码:211-222
英文摘要	In environments driven by unpredictable resource pulses, populations of many consumer species experience dramatic fluctuations in abundance and spatial extent. Predator-prey relationships in these acyclic systems are poorly understood in particular with respect to the level of prey specialisation shown by nomadic predators. To understand the dynamics of such a system I examined the response to rodent outbreaks by the letter-winged kite (Elanus scriptus) in the Simpson Desert, Australia; a region that experiences major pulses in primary productivity, driven by unpredictable rainfall events. The kite feeds on small mammals and is the only night-hunting species in the Accipitridae. Letter-winged kites irrupted in the area on only three occasions during 20 years of sampling (1999-2019) and remained for a maximum of 20 months. Each period of kite occupation occurred only during the increase and/or peak phase of rodent population cycles (which occurred three times during the study). During each period kite diet was dominated by small (10-50 g body mass) quadrupedal rodents (Pseudomys australis, P. hermannsburgensis, Mus musculus). Abundance of these species varied across the three outbreaks and kites typically captured them in proportion to availability. The large body mass (134 g) long-haired rat (Rattus villosissimus) was abundant during one outbreak but was infrequently consumed. The bipedal spinifex hopping-mouse (Notomys alexis) was within the kites' favoured prey size range (35 g) but was consistently avoided. The flexibility in prey selection by letter-winged kites appears to be an important adaptation for survival and reproduction by species exploiting acyclic rodent outbreaks.
英文关键词	Irruption Letter-winged kite Resource pulse Rodent Simpson Desert
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000646155500001
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351232
作者单位	[Pavey, Chris R.] CSIRO Land & Water, PMB 44, Darwin, NT 0822, Australia
推荐引用方式 GB/T 7714	Pavey, Chris R.. A nomadic avian predator displays flexibility in prey choice during episodic outbreaks of rodents in arid Australia[J]. Commonwealth Scientific and Industrial Research Organisation,2021,196(1):211-222.
APA	Pavey, Chris R..(2021).A nomadic avian predator displays flexibility in prey choice during episodic outbreaks of rodents in arid Australia.OECOLOGIA,196(1),211-222.
MLA	Pavey, Chris R.."A nomadic avian predator displays flexibility in prey choice during episodic outbreaks of rodents in arid Australia".OECOLOGIA 196.1(2021):211-222.

条目包含的文件
条目无相关文件。

个性服务

谷歌学术

百度学术

必应学术

相关权益政策

收藏/分享