Document Detail

Effects of food restriction and social cues on sexual maturation and growth in male musk shrews (Suncus murinus).
MedLine Citation:
PMID:  1995861     Owner:  NLM     Status:  MEDLINE    
In the first experiment, the effects of food availability on growth and reproduction were assessed by placing male musk shrews on 3 different feeding schedules, i.e. fed ad libitum, fed 50% of the amount eaten by the ad-libitum controls or fed 25% of the amount eaten by the ad-libitum controls. After 25 days, growth and sexual maturation were significantly retarded in both of the food-restricted groups compared to the control group. In the second experiment, the combined effects of food availability and social cues were investigated in juvenile males that were either fed ad libitum (during the day) or placed on a restricted diet known to inhibit growth and reproduction. Half of these males were either housed alone or with an adult female (separated from female during the day by a wire barrier, but in full contact at night). The ad-libitum-fed males living with a female ate more food, gained more body weight and were more sexually mature than ad-libitum-fed animals living alone. Furthermore, males in the two food-restricted groups had lower body weights and were sexually immature compared with males in both of the ad-libitum-fed groups. Finally, there were little or no differences in growth and reproduction between animals in the two food-restricted groups. These results suggest that food availability is an important environmental regulator of the timing of sexual maturation, and that stimulatory social cues cannot override the inhibitory effects of an inadequate diet.
N L Wayne; G N Wade; E F Rissman
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of reproduction and fertility     Volume:  91     ISSN:  0022-4251     ISO Abbreviation:  J. Reprod. Fertil.     Publication Date:  1991 Jan 
Date Detail:
Created Date:  1991-03-26     Completed Date:  1991-03-26     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0376367     Medline TA:  J Reprod Fertil     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  385-92     Citation Subset:  IM    
Department of Biology, University of Virginia, Charlottesville 22901.
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MeSH Terms
Androgens / blood
Body Weight
Food Deprivation / physiology*
Genitalia, Male / anatomy & histology
Organ Size
Sexual Maturation / physiology*
Shrews / growth & development,  physiology*
Social Behavior*
Grant Support
Reg. No./Substance:

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