Arid
DOI10.1163/156853900502583
Tradeoffs between predation risk and feeding in a lizard, the broad-headed skink (Eumeces laticeps)
Cooper, WE
通讯作者Cooper, WE
来源期刊BEHAVIOUR
ISSN0005-7959
出版年2000
卷号137页码:1175-1189
英文摘要

Foraging, feeding, and escape decisions may all be modified by threat of predation. Field experiments using a human simulated predator show that a lizard, the broad-headed skink, Eumeces laticeps, alters several aspects of feeding behavior in ways suggesting tradeoffs between predation risk and feeding. When food (cricket) was closer to the predator, the lizards more frequently did not attack it. and often retreated to safety before consuming it, reducing the duration of exposure to predation. The probability of attacking a cricket decreased with distance of the lizard from refuge, reflecting greater risk due to increased time required to reach refuge. Latency to attach increased with distance of the lizard from refuge, suggesting that lizards assessed the risk as acceptable after observing the predator’s continued immobility. Large crickets were attacked with higher probability and shorter latency than small crickets, indicating that greater risk was acceptable fur greater energetic benefit. The lizards more frequently carried large than small crickets to refuges before eating them, reducing duration of exposure because handling time was greater for larger crickets. Smaller crickets were consumed where captured, again indicating modification of feeding behavior in response to predation risk. The skinks also reduced risk by reducing handling time when closer to the predator. Escape was delayed until a predator approached closer when lizards were eating than when not eating. This delay may reflect a tradeoff between predation risk and acquisition of food.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000165973300003
WOS关键词DESERT BABOON POPULATION ; FORAGING BEHAVIOR ; CONFLICTING DEMANDS ; GREY SQUIRREL ; HABITAT USE ; PREY ; REFUGE ; ESCAPE ; VIGILANCE ; MINNOWS
WOS类目Behavioral Sciences ; Zoology
WOS研究方向Behavioral Sciences ; Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/138650
作者单位(1)Indiana Univ Purdue Univ, Dept Biol, Ft Wayne, IN 46805 USA
推荐引用方式
GB/T 7714
Cooper, WE. Tradeoffs between predation risk and feeding in a lizard, the broad-headed skink (Eumeces laticeps)[J],2000,137:1175-1189.
APA Cooper, WE.(2000).Tradeoffs between predation risk and feeding in a lizard, the broad-headed skink (Eumeces laticeps).BEHAVIOUR,137,1175-1189.
MLA Cooper, WE."Tradeoffs between predation risk and feeding in a lizard, the broad-headed skink (Eumeces laticeps)".BEHAVIOUR 137(2000):1175-1189.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Cooper, WE]的文章
百度学术
百度学术中相似的文章
[Cooper, WE]的文章
必应学术
必应学术中相似的文章
[Cooper, WE]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。