Document Detail

Nonrandom sex composition of gerbil, mouse, and hamster litters before and after birth.
MedLine Citation:
PMID:  2044849     Owner:  NLM     Status:  MEDLINE    
Examining data describing the sex composition of 1074 Caesarean-delivered litters of house mice, 253 Caesarean-delivered and 265 vaginally delivered litters of Mongolian gerbils, and 854 vaginally delivered litters of golden hamsters, we determined whether segregation of sexes between uterine horns and correlations between litter size and litter sex ratio were present in each of the three rodent species studied. Although significant deviations from expected distributions of male and female fetuses were found, these deviations from chance were not the same in any two of the three species examined. Analyses also indicated that the correlation between litter size and litter sex ratio that Huck, Seger, and Lisk (1990) found in vaginally delivered infant hamsters is present in vaginally delivered infant Mongolian gerbils, but not in their Caesarean-delivered colony mates. In gerbils, and perhaps hamsters as well, the correlation between litter size and litter sex ratio appears to be a result of sex-biased perinatal mortality correlated with litter size rather than of sex-biased conception correlated with litter size.
M M Clark; B G Galef; F S vom Saal
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Developmental psychobiology     Volume:  24     ISSN:  0012-1630     ISO Abbreviation:  Dev Psychobiol     Publication Date:  1991 Mar 
Date Detail:
Created Date:  1991-07-18     Completed Date:  1991-07-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0164074     Medline TA:  Dev Psychobiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  81-90     Citation Subset:  IM    
Department of Psychology, McMaster University, Hamilton, Ontario, Canada.
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MeSH Terms
Gerbillinae / physiology
Litter Size / physiology*
Mesocricetus / physiology
Mice / physiology
Pregnancy, Animal / physiology*
Sex Determination (Analysis)*
Sex Differentiation / physiology*
Sex Ratio
Species Specificity*
Uterus / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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