Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011-5640, USA.
J Anim Ecol. 2011 Sep;80(5):905-7. doi: 10.1111/j.1365-2656.2011.01890.x.
Two theoretical frameworks guide research on multiple male phenotypes within natural populations. Each scheme recognizes that male polymorphisms vary in the degree to which genotype and environment influence trait expression. Consensus remains elusive, however, on whether average fitnesses must be equivalent and whether genetic differences need exist for polymorphism to persist over time. Schradin and Lindholm address these hypotheses in African four-striped mice with detailed parentage and body size data. Their results and interpretation call each framework's predictions into question, but reveal a common truth. Debate might be resolved if researchers agreed on which parameters to measure and compare.
有两个理论框架指导着对自然种群中多种雄性表型的研究。每个方案都认识到，基因型和环境对表型表达的影响程度不同，导致雄性多态性的变化。然而，对于平均适应度是否必须相等，以及遗传差异是否需要存在才能使多态性长期存在，仍然没有达成共识。Schradin 和 Lindholm 使用详细的亲代和体型数据，对非洲四条纹鼠进行了研究，以解决这些假设问题。他们的结果和解释对每个框架的预测都提出了质疑，但揭示了一个共同的事实。如果研究人员就需要测量和比较的参数达成一致，那么争论可能就会得到解决。
