Skewed paternity and sex allocation in hermaphroditic plants and animals
Skewed paternity and sex allocation in hermaphroditic plants and animals
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DOI：
10.1098/rspb.2001.1771
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发表时间：
2001-10-22
影响因子：
4.7
通讯作者：
Compton, SG
中科院分区：
文献类型：
--
作者：
Greeff, JM;Nason, JD;Compton, SG
模型预测，当雌性优先使用两个雄性精子中的一个，而雄性不知道谁更受青睐时，分配给精子的数量会减少。类似的折扣发生在植物中，当它们的父系成功被随机的、不可遗传的因素（如在种群中的位置和传粉者的行为）扭曲时。我们提出了一个模型，表明偏态的父权呼叫会影响两性人的性别分配，即它会导致女性偏好的投资。该模型强调了本地配偶竞争和精子竞争之间的密切联系。我们使用的父系数据前面的榕树，以说明在父系成功的倾斜可以导致高度的同胞配子竞争，在所有显然是开放的育种系统。由于父系的偏斜在两性植物和动物中普遍存在，这些发现应该广泛应用。
Models predict a reduced allocation to sperm when females preferentially use one of two males' sperm and the males do not know who is favoured. An analogous discounting occurs in plants when their paternity success is skewed by random, non-heritable factors such as location in the population and pollinator behaviour. We present a model that shows that skewed paternity call affect the sex allocation of hermaphrodites, that is it leads to a female-biased investment. The model highlights the close links between local mate competition and sperm competition. We use paternity data front Ficus in order to illustrate that skews in paternity success can lead to a high degree of sibling gamete competition in all apparently open breeding system. Since skews in paternity arc ubiquitous in hermaphroditic plants and animals these findings should apply broadly.