NDLI: Peak shift in honey bee olfactory learning

Content Provider	Springer Nature Link
Author	Andrew, Samuel C. Perry, Clint J. Barron, Andrew B. Berthon, Katherine Peralta, Veronica Cheng, Ken
Copyright Year	2014
Abstract	If animals are trained with two similar stimuli such that one is rewarding (S+) and one punishing (S−), then following training animals show a greatest preference not for the S+, but for a novel stimulus that is slightly more different from the S− than the S+ is. This peak shift phenomenon has been widely reported for vertebrates and has recently been demonstrated for bumblebees and honey bees. To explore the nature of peak shift in invertebrates further, here we examined the properties of peak shift in honey bees trained in a free-flight olfactory learning assay. Hexanal and heptanol were mixed in different ratios to create a continuum of odour stimuli. Bees were trained to artificial flowers such that one odour mixture was rewarded with 2 molar sucrose (S+), and one punished with distasteful quinine (S−). After training, bees were given a non-rewarded preference test with five different mixtures of hexanal and heptanol. Following training bees’ maximal preference was for an odour mixture slightly more distinct from the S− than the trained S+. This effect was not seen if bees were initially trained with two distinct odours, replicating the classic features of peak shift reported for vertebrates. We propose a conceptual model of how peak shift might occur in honey bees. We argue that peak shift does not require any higher level of processing than the known olfactory learning circuitry of the bee brain and suggest that peak shift is a very general feature of discrimination learning.
Starting Page	1177
Ending Page	1186
Page Count	10
File Format	PDF
ISSN	14359448
Journal	Animal Cognition
Volume Number	17
Issue Number	5
e-ISSN	14359456
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-04-21
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Peak shift Mushroom body Olfaction Discrimination learning Honey bee Behavioural Sciences Zoology Human Physiology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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