Physiological Basis of a Genetically-determined Life- history Trade-off

该提案的目标是解决一个核心但很差的问题， 生活史模式演变中的理解主题， 生物体：一种能力相对于另一种能力的权衡 营养资源的权衡， 生理水平。 具体来说，飞行和 蟋蟀的生产能力和繁殖量 鲁本斯将被考虑。 该物种的个体出现在 两种基因决定的形式之一。 一种形式展示了 产蛋量增加，但不能飞，而另一个是少 多产但能飞行 的营养摄入量， 两种形式和内部分配的营养物质之间 飞行、生殖和其他非飞行和非生殖 将测量这些蟋蟀的组织。 本研究将 在努力调查是否存在 解剖结构之间的资源权衡， 基因决定的生理过程 在整个生物体生命史的水平上看到的权衡。 在 此外，通过获得生理基础的数据， 传播和繁殖，这项研究将提供重要的 应用研究的背景信息， 控制昆虫种群。

The goal of this proposal is to address a central but poorly understood topic in the evolution of life-history patterns in organisms: whether trade-offs of one ability relative to another result from trade-offs of nutritional resources at the physiological level. Specifically, the trade-off between flight capability and reproductive output of the crickets Gryllus rubens, will be considered. Individuals of this species occur as one of two genetically determined forms. One form exhibits elevated egg production but cannot fly while the other is less fecund but is capable of flight. The nutritional intake of the two forms and the internal partitioning of nutrients among flight, reproductive and other non-flight and non-reproductive tissues in these crickets will be measured. This study will break new ground in its effort to investigate whether there is a trade-off of resources between the anatomical structures and physiological processes underlying a genetically determined trade-off seen at the level of whole organism life-history. In addition, by obtaining data on the physiological bases of dispersal and reproduction, this study will provide important background information for applied studies that attempt to control insect populations.