Phantom alternatives influence food preferences in the eastern honeybee Apis cerana

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 2012年后新成立研究组

	Phantom alternatives influence food preferences in the eastern honeybee Apis cerana
	Tan, K
刊名	JOURNAL OF ANIMAL ECOLOGY
	2015
卷号	84 期号:2 页码:509-517
关键词	choice cognition decision-making foraging preferences honeybee indifference to irrelevant alternatives phantom alternatives
ISSN号	0021-8790
中文摘要	1. Most models of animal choice behaviour assume that desirable but unavailable options, such as a high quality, but inhabited nest sites, do not influence an individual's preferences for the remaining options. However, experiments suggest that in mammals, the mere presence of such phantom' alternatives can alter, and even reverse, an individual's preferences for other items in a choice set. Phantom alternatives may be widespread in nature, as they occur whenever a resource is visible, but unavailable at the time of choice. They are particularly relevant for nectar-foraging animals, where previously rewarding flowers may sometimes be empty. Here, we investigate the effect of phantom alternatives on feeder preferences in the eastern honeybee, Apis cerana. First, we tested the effects of unattractive and attractive phantom alternatives by presenting individual bees with either a binary choice set containing two feeders that differed strongly in two qualities, but were equally preferred overall (option 1' and option 2'), or a ternary choice set containing option 1, option 2 and one of two phantom types (unattractive and attractive). Secondly, we determined whether phantoms increase (similarity effect) or decrease (dissimilarity effect) preference for phantom-similar choices. In binary trials, bees had no significant preference for option 1 or option 2. However, after encountering an attractive phantom alternative, individual bees preferred option 2. The unattractive phantom did not influence bee preferences. Phantoms consistently changed individual bee preferences in favour of the phantom-similar choice. This means that the presence of an attractive food source, even if it is unavailable, can influence preference relationships between remaining items in the choice set. Our findings highlight the importance of considering the potential for phantom effects when studying the foraging behaviour of animals. Our results are particularly relevant for nectarivores, where empty but previously rewarding flowers are a common occurrence. Since an increase in pollinator visits can result in higher seed set, our results open up the possibility that by shifting pollinator preferences, empty flowers could have otherwise-unpredicted influences on community composition, plant-pollinator interactions and pollinator behaviour.
原文出处	10.1111/1365-2656.12288
公开日期	2015-04-28
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/8687]
专题	西双版纳热带植物园_2012年后新成立研究组
推荐引用方式 GB/T 7714	Tan, K. Phantom alternatives influence food preferences in the eastern honeybee Apis cerana[J]. JOURNAL OF ANIMAL ECOLOGY,2015,84(2):509-517.
APA	Tan, K.(2015).Phantom alternatives influence food preferences in the eastern honeybee Apis cerana.JOURNAL OF ANIMAL ECOLOGY,84(2),509-517.
MLA	Tan, K."Phantom alternatives influence food preferences in the eastern honeybee Apis cerana".JOURNAL OF ANIMAL ECOLOGY 84.2(2015):509-517.