DISSERTATION RESEARCH: Connecting mechanisms of variance in reproductive success to consequences of trait divergence among Tribolium species

论文研究：将繁殖成功率的差异机制与谷盗物种性状差异的后果联系起来

基本信息

批准号：
1310878
负责人：
Scott Pitnick
金额：
$ 1.92万
依托单位：
Syracuse University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-06-01 至 2016-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1310878&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Connecting mechanisms variance

项目摘要

Traits that influence reproductive success can be both remarkably elaborate and differ greatly between related species. Variation in such traits not only influences an individual?s success in populations, but can also help form new species when groups differ in characteristics important to choosing a mate. Measuring reproductive success becomes more complex when animals mate with multiple individuals within a single breeding cycle, a common occurrence. Reproductive success, a major influence on trait evolution, is then shaped not only by success in achieving matings, but also by competitively fertilizing eggs, and producing high quality offspring. Using lines of flour beetles whose males? produce sperm with red or green fluorescent tagged heads, this research will evaluate the outcome of these different selective episodes and identify their contribution to reproductive success. The use of the fluorescent sperm lines also enables identification of mechanisms underlying differences in competitive fertilization success within populations, as well as differences in fertilization capability in hybrid versus same species matings. Finally, this research will explore how repeated matings influence offspring production in this highly promiscuous species.Because flour beetles are economically significant stored grain pests, insight to their reproductive system can inform management efforts. Additionally, the project will include involvement of multiple undergraduate researchers and outreach to the Syracuse City School District.

影响生殖成功的特征既可以显着详尽，又可以在相关物种之间差异很大。这种特征的变化不仅会影响一个人的成功人群的成功，而且当群体的特征与选择伴侣很重要时，还可以帮助形成新物种。当动物在单个繁殖周期内与多个个体交配时，测量生殖成功就会变得更加复杂，这是常见的情况。然后，生殖成功是对性状进化的主要影响，不仅是成功的，而且还取决于实现整体的成功，而且还取决于竞争性施肥卵并产生高质量的后代。使用雄性的面粉甲虫线？生产具有红色或绿色荧光标记头的精子，这项研究将评估这些不同选择性发作的结果，并确定其对生殖成功的贡献。荧光精子系的使用还可以鉴定人群中竞争受精成功差异的基础机制，以及混合动力的受精能力差异与同一物种分子的差异。最后，这项研究将探讨重复的整体如何影响这种高度混杂的物种中的后代产量。因为面粉甲虫具有经济上重要的谷物害虫，对其生殖系统的洞察力可以为管理工作提供信息。此外，该项目将包括多个本科研究人员的参与以及与锡拉丘兹市学区的宣传。