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Reproductive Inhibition in Female White-Footed Mice from Virginia
C. Richard Terman
Journal of Mammalogy
Vol. 73, No. 2 (May, 1992), pp. 443-448
Published by: American Society of Mammalogists
Stable URL: http://www.jstor.org/stable/1382082
Page Count: 6
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Recently reported studies have shown that ≤3% of young female Peromyscus leucopus noveboracensis born into a laboratory colony founded by mice captured near East Lansing, Michigan, gave birth by 150 days of age if, in addition to the male, an adult female was present. I examined this phenomenon utilizing an outbred laboratory colony founded by adults recently captured near Williamsburg, Virginia. The results demonstrate that 69% of young females reared from weaning in the presence of an adult bisexual pair (parents or not) reproduced by 150 days of age. Rearing young females from 21-90 days of age in the presence of individual adult females resulted in a significantly (P < 0.01) higher rate of reproduction by these younger females subsequent to pairing with adult males than by those reared alone. Thus, the early experience of being with an adult female from 21 to 90 days of age stimulated reproduction in these younger females compared to being reared in isolation. The data suggest variations in a complex behavioral-physiological system between animals of the same subspecies from Michigan and from Virginia.
Journal of Mammalogy © 1992 American Society of Mammalogists