干旱区生态环境知识资源中心(Arid): Ninja owl; Gerbils over-anticipate an unexpected flying predator

Arid

DOI	10.1016/j.beproc.2020.104161
	Ninja owl; Gerbils over-anticipate an unexpected flying predator
	Bleicher, Sonny Shlomo; Kotler, Burt Philip; Embar, Keren
通讯作者	Bleicher, SS
来源期刊	BEHAVIOURAL PROCESSES
ISSN	0376-6357
EISSN	1872-8308
出版年	2020
卷号	178
英文摘要	Foragers make decisions based on cues, information collected from their environment, processed into strategic behaviours. This information, processed in multiple regions of the brain, ultimately result in the production of stress hormones and visible changes in behaviour of animals - both reflexively to avoid depredation and strategically to avoid an encounter with the predator. In a common-garden experiment we tested how imperfect information from visual cues of a predator impacts foraging and apprehension of a desert rodent, the Egyptian gerbil (Gerbillus pyramidum). The gerbils were exposed to predation by barn owls (Tyto alba), one camouflaged on dark nights using black dye. Gerbils' response to the owls was measured using patch-use measured in giving-up densities (GUDs) and time spent in vigilance activity. Owl lethality was extrapolated from mean times spent in attacks and number of attempted strikes. Dyed owls attack-rate was lower and attack duration greater than those of the white owls. During the full moon, when dyed owls were visible, gerbils responded with extreme vigilance and minimal foraging (high GUDs). During the new moon when the owls were most stealthy, the gerbils showed low vigilance coupled with a similar high GUD. The inconsistency between gerbils' foraging and vigilance behaviours, suggest a likely mismatch between perceived risk and actual measurement of predator lethality gathered by the gerbils' observations in real time.
英文关键词	Apprehension Behavioural ecology Evolutionary game theory Harvest-rate curves Predator-prey dynamics Risk-estimation
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000555776300011
WOS关键词	PATCH USE ; HABITAT SELECTION ; FORAGING GAMES ; RISK ; PREY ; BEHAVIOR ; ALLOCATION ; LANDSCAPE ; VIGILANCE ; FISH
WOS类目	Psychology, Biological ; Behavioral Sciences ; Zoology
WOS研究方向	Psychology ; Behavioral Sciences ; Zoology
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325403
作者单位	[Bleicher, Sonny Shlomo] Washington & Lee Univ, Dept Biol Sci, Lexington, VA 24450 USA; [Bleicher, Sonny Shlomo] George Mason Univ, Dept Environm Sci & Policy, Fairfax, VA 22030 USA; [Bleicher, Sonny Shlomo; Kotler, Burt Philip; Embar, Keren] Ben Gurion Univ Negev, Mitrani Dept Dryland Ecol, Sede Boqer, Israel
推荐引用方式 GB/T 7714	Bleicher, Sonny Shlomo,Kotler, Burt Philip,Embar, Keren. Ninja owl; Gerbils over-anticipate an unexpected flying predator[J]. Ben-Gurion University of the Negev,2020,178.
APA	Bleicher, Sonny Shlomo,Kotler, Burt Philip,&Embar, Keren.(2020).Ninja owl; Gerbils over-anticipate an unexpected flying predator.BEHAVIOURAL PROCESSES,178.
MLA	Bleicher, Sonny Shlomo,et al."Ninja owl; Gerbils over-anticipate an unexpected flying predator".BEHAVIOURAL PROCESSES 178(2020).