Mean age at vaginal opening was 41 days, range 33–53 days. Bodyweight at weaning and age at vaginal opening were negatively correlated, but there was no relationship between bodyweight and age at vaginal opening. The presence of a male before vaginal opening did not accelerate either the time of its occurrence or first conception. The vaginas of females caged singly from weaning opened earlier than in those kept in groups of 2 or 3.
References
1.
BronsonF. H., & MaruniakJ. A. (1975). Male induced puberty in female mice: evidence for a synergistic action of social cues. Biology of Reproduction13, 9498.
2.
BrownS. M., & LiskR. D. (1978). Blocked sexual receptivity in grouped female golden hamsters, the result of contact induced inhibition. Biology of Reproduction17, 829833.
3.
CastroB. M. (1967). Age of puberty in female mice: relationship to population density and the presence of adult males. Anals da Academia brasileira de ciencias39, 289292.
4.
DrickamerL. C. (1977). Delay of sexual maturation in female house mice by exposure to grouped females or urine from grouped females. Journal of Reproduction and Fertility51, 7781.
5.
MclntoshT., & DrickamerL. C. (1977). Excreted urine, bladder urine, and the delay of sexual maturation in female house mice. Animal Behaviour25, 9991004.
6.
MarstonJ. H., & ChangM. C. (1965). The breeding, management and reproductive physiology of the Mongolian gerbil, Meriones unguiculatus. Laboratory Animal Care15, 3448.
7.
NakaiK., NimuraH., TamuraM., ShimizuS., & NishimuraH. (1960). Reproduction and postnatal development of the colony bred Meriones unguiculatus kurauchii Mori. Bulletin of Experimental Animals9, 157159.
8.
NorrisM. L., & AdamsC. E. (1972). The growth of the Mongolian gerbil, Meriones unguiculatus, from birth to maturity. Journal of Zoology166, 277282.
9.
NorrisM. L., & AdamsC. E. (1974). Sexual development in the Mongolian gerbil, Meriones unguiculatus, with particular reference to the ovary. Journal of Reproduction and Fertility36, 245248.
10.
SchwentkerV. (1963). The gerbil. A new laboratory animal. Illinois Veterinarian6, 59.
11.
VandenberghJ. G. (1973). Acceleration and inhibition of puberty in female mice by pheromones. Journal of Reproduction and Fertility. Supplement19, 411419.
