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Egg Competition and Cryptic Male Choice in a Pipefish

海龙鱼的卵竞争和隐秘的雄性选择

基本信息

批准号：
0315937
负责人：
Adam Jones
金额：
$ 4.06万
依托单位：
Georgia Tech Research Corporation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2004
资助国家：
美国
起止时间：
2004-01-01 至 2004-10-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315937&HistoricalAwards=false
关键词：
Egg Competition Cryptic Male Choice

项目摘要

Lay summary for proposal number 0315937Egg competition and cryptic male choice in a pipefish: The growing synergy between molecular biology and animal behavior has opened new doors in the study of behavioral ecology. In particular, genetic markers have great potential to provide insights into sperm competition and cryptic female choice, a process by which females affect the fate of sperm within their reproductive tracts. These processes are important, because our interpretation of patterns of mating depends upon the details of events that happen at the level of sperm and eggs after mating. This project is designed to contribute to our knowledge of the important phenomenon of cryptic gamete choice. A system in which gametes are large and easily observable eliminates many of the barriers to progress in the study of gamete competition, and the broad-nosed pipefish, Syngnathus typhle, in which males become pregnant, provides such a system. This project will address two major questions. First, is egg competition or choice a major source of variation in success during mating in pipefish? Second, is the outcome of egg competition determined primarily by males or females? These studies, facilitated by well-tested genetic markers and laboratory-based breeding experiments, will definitively resolve whether or not cryptic male choice appears to be an important mechanism in this species.

第0315937号提案的摘要：尖嘴鱼的卵子竞争和神秘的雄性选择：分子生物学和动物行为之间日益增长的协同作用为行为生态学的研究打开了新的大门。特别是，遗传标记有很大的潜力，提供深入了解精子竞争和神秘的女性选择，一个过程中，女性影响精子的命运在其生殖道。这些过程很重要，因为我们对交配模式的解释取决于交配后精子和卵子层面上发生的事件的细节。这个项目的目的是有助于我们的知识的重要现象的神秘配子的选择。一个配子很大、很容易观察的系统消除了许多阻碍配子竞争研究进展的障碍，宽吻海龙（Syngnathus typhle）提供了这样一个系统，雄性海龙可以怀孕。该项目将解决两个主要问题。首先，是卵竞争或选择的主要来源，在成功的海龙交配？第二，卵子竞争的结果主要由雄性还是雌性决定？这些研究，促进了良好的测试遗传标记和实验室为基础的育种实验，将明确解决是否神秘的男性选择似乎是一个重要的机制，在这个物种。