Biol Reprod Keystone Symposia Conference on Frontiers in Reproductive Biology & Regulation of Fertility.
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Biology of Reproduction, Vol 6, 277-280, Copyright © 1972 by Society for the Study of Reproduction

Pheromonal Facilitation of HCG-Induced Ovulation in Different Strains of Immature Mice

M. X. ZARROW 1, B. E. ELEFTHERIOU 1, , and V. H. DENENBERG 1

1 Department of Biobehavioral Sciences, The University of Connecticut, Storrs, Connecticut 06268 and The Jackson Laboratory, Bar Harbor, Maine 04609


Five strains of mice were examined for pheromonal facilitation of HCG-induced ovulation. Significant facilitation of both the percentage of mice ovulating and the average number of ova released was obtained in the SJL/J, the SWR/J and the C3H/HeJ strains. Two of the five strains tested, i.e., the DBA/2J and the C57BL/6J strains, failed to show a pheromonal facilitation of HCG-induced ovulation. An increased number of ova per mouse ovulating also was exhibited in two (SJL/J and C3H/HeJ) of the three strains that showed facilitation. A comparison of the five strains for pheromonal facilitation of either PMSG-induced ovulation (previously reported by us) or HCG-induced ovulation indicates that the three strains (SJL/J, SWR/J, C3H/HeJ), that exhibited facilitation when treated with PMSG, also showed facilitation when treated with HCG.

Submitted on September 13, 1971






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Copyright © 1972 by the Society for the Study of Reproduction.