Schadler M H
Biol Reprod. 1983 Jun;28(5):1137-9. doi: 10.1095/biolreprod28.5.1137.
Pine vole females paired in breeding cages with male siblings remain unreproductive beyond the age of puberty onset. In this study only 10% of females caged with their brothers reproduced, whereas 85% of females placed with strange males had litters. Mating between a female and a strange male was also suppressed by the presence of a male sibling sequestered behind a wire mesh barrier in the breeding cage. When the sibling male was removed from the cage after 1 day, 78% of the females produced litters. When the sibling remained behind the barrier in the breeding cage, only 42% gave birth to young conceived in his presence. Conception of second litters during the postpartum estrus occurred in over 80% of females caged with strange males alone and only 10% of females caged with sibling males. Female pine voles are induced to become reproductively active by strange males but this activity is depressed by the presence of a brother, and once initiated it does not continue if the female is caged with her brother.
在繁殖笼中与雄性同胞配对的雌性松田鼠在青春期开始后仍不具备繁殖能力。在本研究中，与兄弟关在笼中的雌性只有10%进行了繁殖，而与陌生雄性关在一起的雌性有85%产仔。繁殖笼中隔着铁丝网屏障隔离的雄性同胞的存在也抑制了雌性与陌生雄性之间的交配。当同胞雄性在1天后从笼中移除时，78%的雌性产仔。当同胞留在繁殖笼中的屏障后面时，只有42%的雌性生下了在其在场时受孕的幼崽。产后发情期第二次产仔的受孕情况在单独与陌生雄性关在一起的雌性中超过80%出现，而与同胞雄性关在一起的雌性中只有10%出现。陌生雄性会促使雌性松田鼠具有繁殖活性，但兄弟的存在会抑制这种活性，并且如果雌性与兄弟关在笼中，一旦开始繁殖也不会持续下去。
