气候变化领域集成服务门户(CCPortal): Brain size affects female but not male survival under predation threat

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DOI	10.1111/ele.12441
	Brain size affects female but not male survival under predation threat
	Kotrschal A.; Buechel S.D.; Zala S.M.; Corral-Lopez A.; Penn D.J.; Kolm N.
发表日期	2015
ISSN	1461-023X
EISSN	1461-0248
卷号	18 期号:7
英文摘要	There is remarkable diversity in brain size among vertebrates, but surprisingly little is known about how ecological species interactions impact the evolution of brain size. Using guppies, artificially selected for large and small brains, we determined how brain size affects survival under predation threat in a naturalistic environment. We cohoused mixed groups of small- and large-brained individuals in six semi-natural streams with their natural predator, the pike cichlid, and monitored survival in weekly censuses over 5 months. We found that large-brained females had 13.5% higher survival compared to small-brained females, whereas the brain size had no discernible effect on male survival. We suggest that large-brained females have a cognitive advantage that allows them to better evade predation, whereas large-brained males are more colourful, which may counteract any potential benefits of brain size. Our study provides the first experimental evidence that trophic interactions can affect the evolution of brain size. © 2015 The Authors Ecology Letters published by CNRS and John Wiley & Sons Ltd.
英文关键词	Crenicichla; Poecilia reticulata; Artificial selection; Brain size; Guppy; Pike cichlid; Predation; Semi natural; Survival
学科领域	brain; cognition; color; cyprinid; female; predation; predator; size; survival; Crenicara; Crenicichla; Poecilia reticulata; Vertebrata; anatomy and histology; animal; brain; female; male; organ size; physiology; Poecilia; population dynamics; predation; sex difference; Animals; Brain; Female; Male; Organ Size; Poecilia; Population Dynamics; Predatory Behavior; Sex Factors
语种	英语
scopus关键词	brain; cognition; color; cyprinid; female; predation; predator; size; survival; Crenicara; Crenicichla; Poecilia reticulata; Vertebrata; anatomy and histology; animal; brain; female; male; organ size; physiology; Poecilia; population dynamics; predation; sex difference; Animals; Brain; Female; Male; Organ Size; Poecilia; Population Dynamics; Predatory Behavior; Sex Factors
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118703
作者单位	Department of Zoology/Ethology, Stockholm University, Svante Arrhenius väg 18B, Stockholm, SE-10691, Sweden; Department of Integrative Biology and Evolution, Konrad Lorenz Institute of Ethology, University of Veterinary Medicine, Savoyenstraße 1a, Vienna, 1160, Austria
推荐引用方式 GB/T 7714	Kotrschal A.,Buechel S.D.,Zala S.M.,et al. Brain size affects female but not male survival under predation threat[J],2015,18(7).
APA	Kotrschal A.,Buechel S.D.,Zala S.M.,Corral-Lopez A.,Penn D.J.,&Kolm N..(2015).Brain size affects female but not male survival under predation threat.Ecology Letters,18(7).
MLA	Kotrschal A.,et al."Brain size affects female but not male survival under predation threat".Ecology Letters 18.7(2015).