Dissertation Research: Natural Selection and the Role of Pheromones in Colias

论文研究：自然选择和信息素在豆类中的作用

• 批准号: 8715010
• 负责人: Orley Taylor
• 金额: --
• 依托单位: University of Kansas Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-15 至 1989-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715010&HistoricalAwards=false
• 关键词: Dissertation; Research; Natural; Selection; Role

The closely related sulfur butterflies, Colias eurytheme and C. philodice, coexist over much of North America. Although they are capable of hybridizing, the females of each species normally prevent this by evaluating both visual and chemical (i.e., pheromonal) information provided by courting males. Taylor and colleagues now have evidence that the male pheromones within a species are quite variable both in quantity and quality and that unmated females often reject some courting males of their own species while accepting others. Preliminary data on C. eurytheme generally support the hypothesis that an otherwise suitable courting male may be rejected or accepted by a female based on the qualities or quantities of the chemicals making up its pheromone. Although a vast amount of work has been done on the identification of pheromones of many insect species, relatively little is known about the extent or kind of within-species pheromone variation, and practically nothing is known about what causes this variation or its effects on mating behavior. Colias eurytheme and C. philodice are exceptionally suited to serve as model species for examining the role of within-species variation in insect pheromones. The courtship system is well understood both behaviorally and genetically, the pheromone components have been identified, and these species can be mass-reared in the laboratory making them susceptible to genetic manipulation and behavioral experimentation. Modern methods of pest-management often include the use of the pest-species' pheromone either for sampling or for actual attempts at suppression. The result of this study should make clear that pheromone variation can be considerable and cannot always be ignored.

与硫蝶关系密切的有宽缘斑蝶Colias eurytheme和宽缘斑蝶C. philodice，共存于北美大部分地区。虽然它们能够杂交，但每个物种的雌性通常通过评估视觉和化学（即，信息素）由求爱雄性提供的信息。泰勒和他的同事们现在有证据表明，一个物种内的雄性信息素在数量和质量上都有很大的差异，未交配的雌性经常拒绝一些求爱的雄性，而接受其他雄性。C.广缘种通常支持这样的假设，即基于构成其信息素的化学物质的质量或数量，一个原本合适的求爱雄性可能被雌性拒绝或接受。虽然已经做了大量的工作，许多昆虫物种的信息素的鉴定，相对较少的是知道的程度或种类的种内信息素的变化，几乎没有什么知道是什么原因导致这种变化或其对交配行为的影响。Colias eurytheme和C. philodice是非常适合作为模式物种研究昆虫信息素的种内变异的作用。求偶系统在行为和遗传上都得到了很好的理解，信息素成分已经被确定，这些物种可以在实验室中大量饲养，使它们容易受到遗传操纵和行为实验的影响。现代害虫管理方法通常包括使用害虫种类的信息素，用于取样或实际抑制。这项研究的结果应该清楚地表明，信息素的变化可以是相当大的，不能总是被忽视。