Rissman E F, Johnston R E
Physiol Behav. 1986;36(2):343-7. doi: 10.1016/0031-9384(86)90027-2.
Weanling male California voles were housed individually in cages containing either bedding taken from their own mothers, from unrelated mothers, or clean woodshavings. Half of the males in each housing condition received fresh lettuce daily in addition to their standard diets. At 45 days of age males housed in clean bedding had heavier seminal vesicles than males housed in bedding from their own or an unrelated mother. However, males which received lettuce supplementation displayed large-sized seminal vesicles regardless of their housing condition. In a second study 45-47 day old females were housed either with an adult male, alone in the bedding of an adult male, or in clean bedding for 4 days. Again, one half of the females in each housing condition received lettuce daily in addition to their standard diet. Ovarian and uterine weights were heaviest in females that had direct contact with an adult male. Lettuce supplementation increased uterine weights in females housed alone in either clean or male-soiled bedding. Lettuce did not accelerate uterine growth in females co-habiting with males, presumably male contact causes maximal development. These data show that the ingestion of green vegetation may facilitate reproductive development in male and female voles, despite inhibitory social conditions.
断奶后的雄性加利福尼亚田鼠被单独饲养在笼子里，笼子里的垫料要么取自它们自己的母亲，要么取自无血缘关系的母亲，要么是干净的木屑。在每种饲养条件下，一半的雄性田鼠除了标准饮食外，每天还会得到新鲜生菜。45日龄时，饲养在干净垫料中的雄性田鼠的精囊比饲养在取自它们自己或无血缘关系母亲的垫料中的雄性田鼠更重。然而，补充生菜的雄性田鼠无论饲养条件如何，精囊都很大。在第二项研究中，45 - 47日龄的雌性田鼠要么与成年雄性田鼠一起饲养，要么单独饲养在成年雄性田鼠的垫料中，要么饲养在干净垫料中4天。同样，在每种饲养条件下，一半的雌性田鼠除了标准饮食外，每天还会得到生菜。与成年雄性田鼠有直接接触的雌性田鼠的卵巢和子宫重量最重。补充生菜增加了单独饲养在干净或雄性弄脏的垫料中的雌性田鼠的子宫重量。生菜并没有加速与雄性田鼠同居的雌性田鼠的子宫生长，推测雄性接触会导致最大程度的发育。这些数据表明，尽管存在抑制性的社会条件，但摄取绿色植物可能会促进雄性和雌性田鼠的生殖发育。
