The Genetic Basis of Alternative Maternal Tactics

替代母亲策略的遗传基础

• 批准号: 9020014
• 负责人: Douglas Tallamy
• 金额: $ 16.41万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-15 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9020014&HistoricalAwards=false
• 关键词: Genetic; Basis; Alternative; Maternal; Tactics

This project is designed to examine the degree to which the expression of several alternative maternal behaviors exhibited by Gargaphia solani, is under genetic control. It is founded upon the fact that within the same animal population, behaviors with similar functions are often so different that one response can be considered a distinct alternative to other responses. The factors determining whether behavioral alternatives stem from genetic or environmental differences among individuals are understood in only a few cases. Gargaphia provides a model system with which to examine behavioral alternatives because of the unusual maternal behaviors exhibited by these organisms: within a single populaton females either guard their offspring from predators, abandon their eggs after laying, or leave their eggs to the care and protection of another female. Furthermore, egg recipients either aggressively repel egg donors or passively accept their eggs. The existence of these and other maternal options in G. solani provides an opportunity to characterize the extent to which the expression of each alternative is regulated by genes, by environmental conditions, or by some interaction between the two. This project will examine the genetic component of behavioral alternatives associated with egg dumping and antipredator aggression by means of half-sib analyses, intra-and interpopulation comparisons, and artificial selection. Integration of this information will provide a valuable expansion of the experimental base upon which theories concerning the evolution, mechanisms, and ecology of alternative behavioral tactics can be tested.

这个项目的目的是检查的程度， 表现出几种不同的母性行为， Gargaphia solani，是在基因控制下。 它是建立在 事实上，在同一个动物种群中， 类似的功能往往是如此不同，一个响应可以是 被认为是其他反应的独特替代方案。 的 决定行为选择是否源于 个体之间的遗传或环境差异 只有在少数情况下才能理解。 Gargaphia提供了一个模型 系统，以检查行为的替代品，因为 这些生物体表现出的不寻常的母性行为： 在一个种群中雌性要么保护它们的后代在一个种群中雌性要么保护它们的后代 在产卵后抛弃卵，或者离开它们的 把卵交给另一只雌性来照顾和保护。 此外，委员会认为， 卵子接受者要么积极地排斥卵子捐赠者， 接受他们的卵子。 这些和其他产妇的存在 在G. solani提供了一个机会， 每种选择的表达受到管制的程度 基因、环境条件或某些相互作用 两人之间 这个项目将研究遗传成分 与倾倒鸡蛋有关的行为替代品， 通过半同胞分析，内部和 种群间比较和人工选择。 这些信息的整合将提供一个有价值的扩展 的实验基础上，理论有关的 替代行为的进化、机制和生态学 战术可以测试。