Massey Adrianne
Zoology Department, North Carolina State University, 27695, Raleigh, USA.
Oecologia. 1986 Apr;69(1):140-143. doi: 10.1007/BF00399050.
Grouping of female Mus musculus resulted in an increase in mean estrous cycle length from 4 to 12 days, yet some short cycles were still observed. Short cycles were attributed to certain females who consistently maintained a short cycling pattern as well as females who exhibited both short and long cycles. Upon breeding, females that continued to show a short cycle when grouped produced and weaned more young than females with suppressed cycles. No differences in mean weaning weight or sex ratio of the litters was observed. The ecological and evolutionary implications of these findings are discussed.
将雌性小家鼠聚集在一起会导致平均发情周期长度从4天增加到12天，但仍观察到一些短周期。短周期归因于某些持续保持短周期模式的雌性以及表现出短周期和长周期的雌性。在繁殖时，聚集在一起时仍表现出短周期的雌性比周期受抑制的雌性产仔和断奶的幼崽更多。未观察到窝仔平均断奶体重或性别比例的差异。讨论了这些发现的生态和进化意义。
