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Anogenital distance and dominance status in male house mice (Mus domesticus)

✍ Scribed by Lee C. Drickamer; Frederick S. Vom Saal; Lisa M. Marriner; Catherine A. Mossman

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
650 KB
Volume
21
Category
Article
ISSN
0096-140X

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✦ Synopsis

Factors influencing the tendency to be aggressive were investigated in male house mice using a series of paired encounters. Body size, body length, body temperature, age, and anogenital distance were measured on all males. Paired encounters were conducted using a standard mouse cage as an arena. Across 64 males involved in 224 encounters, the tendency to be dominant and win encounters was significantly correlated only with anogenital distance (r = 0.383). These findings suggest that there are significant behavioral effects in male mice that could parallel the intrauterine position and related prenatal hormone effects that have been elucidated in female house mice and other rodents. 8 1995 Wiley-Liss, h e .

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Work on the genetic region of the house mice known as the t-complex has produced the hypothesis that mice heterozygous for t-haplotypes (+/t) may have a selective advantage over wild-type (+/+) males owing to the greater aggressiveness of +/t males. We tested this hypothesis by examining the behavio