BEYOND REINFORCEMENT: THE EVOLUTION OF PREMATING ISOLATION BY DIRECT SELECTION ON PREFERENCES AND POSTMATING, PREZYGOTIC INCOMPATIBILITIES

BEYOND REINFORCEMENT: THE EVOLUTION OF PREMATING ISOLATION BY DIRECT SELECTION ON PREFERENCES AND POSTMATING, PREZYGOTIC INCOMPATIBILITIES
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超越强化:通过直接选择偏好和交配后、合子前不相容性来实现交配前隔离的演变

DOI:
10.1111/j.0014-3820.2001.tb01309.x
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发表时间:
2001
期刊:
影响因子:
4.9
通讯作者:
M. Servedio
M. Servedio
中科院分区:
生物学1区
文献类型:
--
作者:
M. Servedio

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摘要二次接触后交配前隔离的演化主要被认为是以强化为幌子,它依赖于低杂交适应度作为交配偏好分歧的驱动力。在这里,我认为两个额外的力量,可能会发挥重大作用,在适应性进化的交配前隔离,直接选择的喜好和间接选择对交配后,前合子不相容。首先,我认为,生态特征位移和感官偏见的组合可以导致直接选择的偏好,结果在生殖特征位移的模式。分析和数值方法,然后证明,如预期的工作在单一的人口,这样的直接选择将很容易压倒间接选择由于低的混合适合度作为偏好进化的主要决定因素。第二,交配后,前合子不兼容性作为一个驱动力的交配前隔离的演变。这些机制中的两类,即增加交配后但产生后代之前雌性死亡率的机制和降低雌性生育力的机制,在对偏好分歧的影响上是相同的。分析和数值技术,然后证明,交配后,前合子因素可能会强烈选择偏好分歧。这些选择力被证明是可比的,如果不大于那些产生的低健身的杂交种。通讯编辑:M.惠特洛克
Abstract The evolution of premating isolation after secondary contact is primarily considered in the guise of reinforcement, which relies on low hybrid fitness as the driving force for mating preference divergence. Here I consider two additional forces that may play a substantial role in the adaptive evolution of premating isolation, direct selection on preferences and indirect selection against postmating, prezygotic incompatibilities. First, I argue that a combination of ecological character displacement and sensory bias can cause direct selection on preferences that results in the pattern of reproductive character displacement. Both analytical and numerical methods are then used to demonstrate that, as expected from work in single populations, such direct selection will easily overwhelm indirect selection due to low hybrid fitness as the primary determinant of preference evolution. Second, postmating, prezygotic incompatibilities are presented as a driving force in the evolution of premating isolation. Two classes of these mechanisms, those increasing female mortality after mating but before producing offspring and those reducing female fertility, are shown to be identical in their effects on preference divergence. Analytical and numerical techniques are then used to demonstrate that postmating, prezygotic factors may place strong selection on preference divergence. These selective forces are shown to be comparable if not greater than those produced by the low fitness of hybrids. Corresponding Editor: M. Whitlock
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