An Analytical Framework for Estimating Fertilization Bias and the Fertilization Set from Multiple Sperm-Storage Organs
An Analytical Framework for Estimating Fertilization Bias and the Fertilization Set from Multiple Sperm-Storage Organs
复制标题
估计受精偏差和多个精子储存器官的受精集的分析框架
DOI：
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发表时间：
2013
影响因子：
2.9
通讯作者：
W. T. Starmer
中科院分区：
文献类型：
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作者：
Mollie K. Manier;S. Lüpold;S. Pitnick;W. T. Starmer
来自竞争对手的精子是如何使卵子受精的，人们知之甚少，但对交配后的性选择有着重要的意义。精子的使用可以与受精组中精子的数量成正比，也可以偏向于一个男性而不是另一个男性。以前的理论治疗假设一个单一的精子储存器官，但许多分类群拥有多个器官或在生殖道的多个区域储存精子。在果蝇中，雌性用两种不同的储存器官来储存精子：精囊（SR）和成对的精囊。在这里，我们扩展了之前的“抽奖”模型，独立描述了精子在SR和精囊内的“受精偏差”，并根据来自不同精子储存器官类型的精子的相对贡献来估计受精集。我们将该模型应用于三个密切相关的物种，以揭示受精集的快速差异和雌性精子选择的潜力。
How sperm from competing males are used to fertilize eggs is poorly understood yet has important implications for postcopulatory sexual selection. Sperm may be used in direct proportion to their numerical representation within the fertilization set or with a bias toward one male over another. Previous theoretical treatments have assumed a single sperm-storage organ, but many taxa possess multiple organs or store sperm within multiple regions of the reproductive tract. In Drosophila, females store sperm in two distinct storage organ types: the seminal receptacle (SR) and the paired spermathecae. Here, we expand previous “raffle” models to describe “fertilization bias” independently for sperm within the SR and the spermathecae and estimate the fertilization set based on the relative contribution of sperm from the different sperm-storage organ types. We apply this model to three closely related species to reveal rapid divergence in the fertilization set and the potential for female sperm choice.
影响因子：
2.6
作者：
K. Ravi Ram;M. Wolfner
通讯作者：
K. Ravi Ram;M. Wolfner
影响因子：
10.7
作者：
Swanson, WJ;Aquadro, CF;Vacquier, VD
通讯作者：
Vacquier, VD
影响因子：
2.2
作者：
Adams, Erika M.;Wolfner, Mariana F.
通讯作者：
Wolfner, Mariana F.