Massey A, Vandenbergh J G
Science. 1980 Aug 15;209(4458):821-2. doi: 10.1126/science.7190728.
Urine produced by wild female house mice, living in high- and low-density populations and confined to areas within a highway cloverleaf, was tested for its ability to delay puberty in juvenile female mice. Only urine collected from females in the dense population at its maximum density delayed puberty in test females. Urine collected when the population was less dense, or from a population that remained sparse, failed to delay puberty. These results suggest that a urinary factor present at high densities may delay puberty and thus help to slow further population growth.
对生活在高密度和低密度种群中、且被限制在高速公路苜蓿叶形立交桥区域内的野生雌性家鼠所产生的尿液，进行了其延迟幼年雌性小鼠青春期能力的测试。只有从处于最大密度时的高密度种群中的雌性收集的尿液能延迟受试雌性小鼠的青春期。当种群密度较低时收集的尿液，或从一直稀疏的种群中收集的尿液，都未能延迟青春期。这些结果表明，高密度时存在的一种尿液因子可能会延迟青春期，从而有助于减缓种群的进一步增长。
