Whittier Timothy S, Kaneshiro Kenneth Y
University of Hawaii, Hawaiian Evolutionary Biology Program, 1993 East-West Road, Honolulu, Hawaii, 96822.
Evolution. 1995 Oct;49(5):990-996. doi: 10.1111/j.1558-5646.1995.tb02333.x.
Adaptive hypotheses of female choice predict that females use male courtship displays as an indicator of male quality. A test of whether female choice is adaptive measuring direct and indirect effects of mate choice on females was made using a laboratory population of a lek-mating species, the Mediterranean fruit fly. The nonrandom mating observed in this species is thought to be strongly influenced by female choice. Whether female choice acts to increase fecundity or offspring quality was assessed using two different statistical tests. Multiple regression showed that females generally do not receive direct benefits as a result of mating with males which are successful in copulating with many females. However, in one trial the relationship between male quality and female benefit was nonlinear. Females which mate with males that obtain few matings (<2), and females which mate with males that obtain many matings (>6) enjoy increased fecundity. Mate choice does not, however, appear to enhance offspring quality as father/son correlation and sibling analysis showed no heritable component to male copulatory success.
雌性选择的适应性假说预测，雌性会将雄性求偶展示作为雄性质量的指标。利用一种在求偶场交配的物种——地中海实蝇的实验室种群，对雌性选择是否具有适应性进行了测试，该测试衡量了配偶选择对雌性的直接和间接影响。在这个物种中观察到的非随机交配被认为受到雌性选择的强烈影响。使用两种不同的统计测试评估了雌性选择是否会提高繁殖力或后代质量。多元回归表明，雌性通常不会因与成功与许多雌性交配的雄性交配而获得直接益处。然而，在一次试验中，雄性质量与雌性益处之间的关系是非线性的。与交配次数少（<2次）的雄性交配的雌性，以及与交配次数多（>6次）的雄性交配的雌性，繁殖力会提高。然而，配偶选择似乎并没有提高后代质量，因为父子相关性和同胞分析表明，雄性交配成功没有可遗传的成分。
