Dynamics of a Pelagically Spawning Coral Reef Fish

远洋产卵珊瑚礁鱼的动态

• 批准号: 9206182
• 负责人: Douglas Shapiro
• 金额: $ 18.46万
• 依托单位: Eastern Michigan University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-15 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9206182&HistoricalAwards=false
• 关键词: Dynamics; Pelagically; Spawning; Coral; Reef

This project explores a new hypothesis for explaining the patterns of mating in pelagically-spawning marine fish. The hypothesis states that spawning sites and times are selected to improve fertilization rates. In general, spawning periods represent critical times for production and vulnerable times for harvesting. It is important to know more about their causal basis. In the bluehead wrasse, Thalassoma bifasciatu, Dr. Petersen and colleagues found that the timing of mating varies dramatically between local populations, the mean fertilization rates were surprisingly low and appeared to be influenced by turbulence and location on the reef, and the number of sperm released by males correlated significantly with the size and fecundity of the female with whom they are mating. This project will conduct three interrelated investigations: (1) determine timing of mating by examining the relationships between several measures of water movement and the time of spawning on reefs with different schedules; (2) locate mating sites that facilitate fertilization, egg transport off the reef, or both; and (3) investigate fertilization dynamics by examining how the number of eggs fertilized varies with the number of sperm released by the male, which generates specific predictions of how males should allocate sperm among spawns.

这个项目探索了一个新的假设来解释这些模式 在远洋产卵的海洋鱼类中的交配。 的假设 选择产卵地点和时间， 受精率。 一般来说，产卵期代表 生产的关键时期和收获的脆弱时期。 重要的是要更多地了解它们的因果关系。 在 蓝头濑鱼、双带海鲶、彼得森博士及其同事 发现交配的时间在不同的地方有很大的不同 人口，平均受精率是令人惊讶的低， 似乎受到湍流和珊瑚礁位置的影响， 男性释放的精子数量与 与他们所处的女性的体型和生育能力有关 交配 该项目将开展三个相互关联的 调查：（1）通过检查 水运动的几种措施之间的关系和 在不同的时间表的礁产卵时间;（2）定位 交配地点，促进受精，卵子运输离开 礁，或两者兼而有之;（3）调查施肥动态， 研究受精卵的数量是如何随着 男性释放的精子，从而产生特定的预测 雄性应该如何在卵中分配精子。