Document Detail

Partial mediation of strange-male-induced pregnancy blocks by sexual activity in mice (Mus musculus).
MedLine Citation:
PMID:  2598624     Owner:  NLM     Status:  MEDLINE    
Novel male house mice (Mus musculus) can disrupt early pregnancy in females. Previous research focused on pheromonal rather than behavioral mediation of this phenomenon. In Experiment 1, novel males were housed with females shortly after insemination. Litter production was negatively correlated with the males' sexual activity. Experiment 2 replicated this finding with a larger sample. In Experiment 3, females were exposed to castrated males. Testosterone-treated males completely blocked pregnancy, whereas untreated males did not. In Experiment 4, castrated testosterone-treated males were presented at intervals after insemination. Pregnancy was totally blocked at Days 3 and 4 and mostly blocked at Days 1 and 2 but was less affected at Days 5 and 6. In Experiment 5, females were exposed through a wire-mesh grid to castrated males. Pregnancies occurred in all conditions, even with testosterone-treated males. These data suggest a role for sexual activity in male-induced pregnancy blocks.
D de Catanzaro; A E Storey
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  103     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  1989 Dec 
Date Detail:
Created Date:  1990-01-30     Completed Date:  1990-01-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  381-8     Citation Subset:  IM    
Department of Psychology, McMaster University, Hamilton, Ontario, Canada.
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MeSH Terms
Embryo Implantation
Mice, Inbred C57BL
Pregnancy, Animal / psychology*
Sexual Behavior, Animal*
Social Environment*
Species Specificity*

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