English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Testosterone reduces responsiveness to nociceptive stimuli in a wild bird

Hau, M., Dominguez, O., & Evrard, H. (2004). Testosterone reduces responsiveness to nociceptive stimuli in a wild bird. Hormones and Behavior, 46(2), 165-170. doi:10.1016/j.yhbeh.2004.02.007.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-D81F-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-4BC2-C
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Hau, M, Author
Dominguez, OA, Author
Evrard, HC1, Author              
Affiliations:
1External Organizations, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: The hormone testosterone (T) is involved in the control of aggressive behavior in male vertebrates. T enhances the frequency and intensity of aggressive behaviors during competitive interactions among males. By promoting high-intensity aggression, T also increases the risk of injury and presumably the perception of painful stimuli. However, perception of painful stimuli during fights could counteract the expression of further aggressive behavior. We therefore hypothesize that one function of T during aggressive interactions is to reduce nociception (pain sensitivity). Here, we experimentally document that T indeed reduces behavioral responsiveness to a thermal painful stimulus in captive male house sparrows (Passer domesticus). Skin nociception was quantified by foot immersion into a hot water bath, a benign thermal stimulus. Males treated with exogenous testosterone left their foot longer in hot water than control birds. Conversely, males in which the physiological actions of testosterone were pharmacologically blocked withdrew their foot faster than control birds. Testosterone might exert its effects on pain sensitivity through conversion into estradiol in the dorsal horn of the spinal cord. Decreased nociception during aggressive encounters may promote the immediate and future willingness of males to engage in high-intensity fights.

Details

show
hide
Language(s):
 Dates: 2004-08
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.yhbeh.2004.02.007
BibTex Citekey: HauDE2004
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Hormones and Behavior
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Amsterdam : Academic Press
Pages: - Volume / Issue: 46 (2) Sequence Number: - Start / End Page: 165 - 170 Identifier: ISSN: 0018-506X
CoNE: https://pure.mpg.de/cone/journals/resource/954922645022