Evolutionarily stable reproductive strategies in sexual organisms .3. The effects of lottery density dependence and pollen limitation
Evolutionarily stable reproductive strategies in sexual organisms .3. The effects of lottery density dependence and pollen limitation
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DOI：
10.1006/jtbi.1996.0304
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发表时间：
1997-03-21
影响因子：
2
通讯作者：
Jiang, XH
中科院分区：
文献类型：
--
作者：
Zhang, DY;Jiang, XH
本文扩展了我们以前的工作建模，在一个单一的框架内，资源分配的繁殖与生存和男性与女性组成部分的繁殖多年生植物。我们得出的进化稳定策略（ESS）的结果花粉限制两性和雌雄异株的植物种群保持稳定，通过密度依赖的少年招聘。花粉限制影响女性生殖分配在我们的模型中，因为有开花后提供的后代。我们发现，花粉的限制是不重要的ESS生殖分配和性别分配，只要有足够的种子，以填补空网站所留下的死亡的成年人。在某种程度上，配子输出和资源投资之间的关系对于两性或性功能都是线性的，在现代生活史和性分配理论中，生殖和性分配的单独处理是足够的。在这种情况下，ESS性别分配正是传统性别分配理论中所发现的，并且雌雄异株物种中雌雄同体或雌性的ESS生殖分配使平均寿命期间分配给生殖的资源量最大化，类似于生活史理论中通常的最大化原则，修改为包括花粉限制和延长种子成熟的可能性。雌雄异株物种中雄性的ESS生殖分配最大化了一生的花粉产量，独立于花粉限制和雌性的资源分配。(C)出版社：Academic Press Limited。
This paper extends our previous work on modelling, within a single framework, the allocation of resources to reproduction vs. survival and the male vs. female components of reproduction in perennial plants. We derive the evolutionarily stable strategy (ESS) results under pollen limitation for both hermaphroditic and dioecious plant populations held stable through density-dependent juvenile recruitment. Pollen limitation affects female reproductive allocation in our model because there is post-flowering provisioning of offspring. We find that pollen limitation is unimportant to the ESS reproductive allocation and sex allocation so long as there are enough seeds to fill the empty sites left by the death of adults. To the extent that the relationships between gamete output and resource investment are linear for both sexes or sex functions, the separate treatment of reproductive and sex allocation in modern life-history and sex-allocation theories is adequate. In such cases, the ESS sex allocation is exactly what is found in traditional sex allocation theory, and the ESS reproductive allocation of hermaphrodites or females in a dioecious species maximizes the amount of resources allocated to reproduction during an average lifespan, an analogue of the usual maximization principle in life-history theory modified to include the possibility of pollen limitation and extended seed maturation. The ESS reproductive allocation of males in a dioecious species maximizes lifetime pollen production, independent of pollen limitation and the female's resource allocation. (C) 1997 Academic Press Limited.