Smith D G, Small M F
Folia Primatol (Basel). 1982;37(1-2):127-36. doi: 10.1159/000156025.
Rates of survival, infant growth and fertility of rhesus monkeys with two, one and no C allele(s) at the transferrin locus are compared. Infants with no C allele experience slower growth rates than animals with either one or two C allele(s). While heterozygous females exhibit the highest infant growth rates among females, their fertility is lower and incidence of abortions and stillbirths is higher than for females with two or no C alleles. It is hypothesized that opposing directions of selection at different life-cycle stages maintain a stable equilibrium at the transferrin locus.
比较了恒河猴在运铁蛋白位点有两个、一个和没有C等位基因时的存活率、幼猴生长率和繁殖力。没有C等位基因的幼猴生长速度比有一个或两个C等位基因的动物慢。虽然杂合子雌性在雌性中表现出最高的幼猴生长率，但其繁殖力较低，流产和死产的发生率高于有两个或没有C等位基因的雌性。据推测，在不同生命周期阶段的相反选择方向在运铁蛋白位点维持了一个稳定的平衡。
