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10 - An ethological analysis of barbering behavior

Published online by Cambridge University Press:  04 August 2010

By
Brett D. Dufour  and
Joseph P. Garner
Edited by
Allan V. Kalueff ,
Justin L. La Porte  and
Carisa L. Bergner
Allan V. Kalueff
Affiliation:
National Institute of Mental Health, Washington DC
Justin L. La Porte
Affiliation:
National Institute of Mental Health, Washington DC
Carisa L. Bergner
Affiliation:
National Institute of Mental Health, Washington DC
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Summary

Summary

“Barbering” is an abnormal behavior in mice. Barbering mice pluck fur and/or whiskers from cage-mates and/or themselves, leaving idiosyncratic patches of hair loss. The behavior is a paradox: barbering is common in laboratory mice, but it is not seen in wild mice, it does not benefit the plucker, and it is costly to the recipient. This chapter will attempt to resolve the barbering paradox by asking how and why barbering behavior occurs. Using Tinbergen's (1963) framework for an ethological analysis, we assess barbering in terms of adaptive function, phylogeny, development, and mechanism.

The first section discusses hypotheses of adaptive function. The dominance hypothesis is refuted by several studies; the coping hypothesis remains untested; and the pathology hypothesis is supported by multiple lines of evidence. The pathology hypothesis therefore provides the best resolution to the barbering paradox. Accordingly, throughout, we compare and contrast barbering to trichotillomania (TTM) and other human disorders characterized by repetitive behavior. The second section assesses the phylogenetic underpinnings of barbering by comparing and contrasting hair-plucking behavior across species and between mouse strains. The third section reviews the developmental processes that underlie barbering behavior, particularly developmental risk factors, learning, the laboratory environment, and transgenic effects. The final section reviews the behavioral mechanisms, eliciting stimuli, and physiological mechanisms that might mediate barbering. Here, we outline the role of cortico–striatal circuitry in abnormal repetitive behavior in general, how it can be used to delineate disorders, and insights it provides into barbering.

Type
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Neurobiology of Grooming Behavior , pp. 184 - 225
Publisher: Cambridge University Press
Print publication year: 2010

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To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

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