Testosterone and opioids interact to regulate feeding in a male migratory songbird

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

A male migratory songbird (dark-eyed junco, Junco hyemalis) was used as a model for studies on the influence of testosterone (T) on feeding, and on interactive effects on this behavior between T and the opioid antagonist naloxone hydrochloride (Nal). Administered chronically to birds exposed to nonstimulating photoperiods, T increased food intake by 30-58% without altering the body mass, the fat index, or the standard metabolic rate. An intramuscular injection of Nal decreased feeding temporarily in a dose-related manner. T-treated juncos exhibited a decreased sensitivity to the anorexic influence of Nal administration, demonstrating that T interacts with opioids to control food consumption. Neuroendocrine mechanisms that potentially account for this interaction are discussed.

Original languageEnglish (US)
Pages (from-to)394-405
Number of pages12
JournalHormones and Behavior
Volume26
Issue number3
DOIs
StatePublished - 1992
Externally publishedYes

Fingerprint

Songbirds
Narcotic Antagonists
Intramuscular Injections
Photoperiod
Naloxone
Opioid Analgesics
Birds
Testosterone
Body Mass Index
Eating
Fats
Food

ASJC Scopus subject areas

  • Endocrinology
  • Behavioral Neuroscience
  • Neurology
  • Psychology(all)

Cite this

Testosterone and opioids interact to regulate feeding in a male migratory songbird. / Deviche, Pierre.

In: Hormones and Behavior, Vol. 26, No. 3, 1992, p. 394-405.

Research output: Contribution to journalArticle

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