TESTOSTERONE AND OPIOIDS INTERACT TO REGULATE FEEDING IN A MALE MIGRATORY SONGBIRD

被引:41
作者
DEVICHE, P
机构
[1] Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks
关键词
D O I
10.1016/0018-506X(92)90009-K
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
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. © 1992.
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页码:394 / 405
页数:12
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