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Sperm form and function: what do we know about the role of sexual selection?

机译:精子的形式和功能:我们对性选择的作用了解多少?

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Sperm morphological variation has attracted considerable interest and generated a wealth of predominantly descriptive studies over the past three centuries. Yet, apart from biophysical studies linking sperm morphology to swimming velocity, surprisingly little is known about the adaptive significance of sperm form and the selective processes underlying its tremendous diversification throughout the animal kingdom. Here, we first discuss the challenges of examining sperm morphology in an evolutionary context and why our understanding of it is far from complete. Then, we review empirical evidence for how sexual selection theory applies to the evolution of sperm form and function, including putative secondary sexual traits borne by sperm.
机译:在过去的三个世纪中,精子的形态学变化引起了人们的极大兴趣,并产生了大量的描述性研究。然而,除了将精子形态与游泳速度联系起来的生物物理研究之外,令人惊讶的是,人们对精子形式的适应性意义及其在整个动物界的巨大多样化所依据的选择性过程知之甚少。在这里,我们首先讨论在进化背景下检查精子形态的挑战,以及为什么我们对精子形态的理解还远远不够。然后,我们回顾性选择理论如何应用于精子形态和功能进化的经验证据,包括精子携带的假定的第二性征。

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