Resting Eggs of Marine Copepods: How Long Do They Survive and What Is the Affect of Anoxia and Hydrogen Sulfide on Their Viability?

海洋桡足类的休眠卵：它们能存活多久？缺氧和硫化氢对其生存能力有什么影响？

• 批准号: 9202322
• 负责人: Nancy Marcus
• 金额: $ 31.38万
• 依托单位: Florida State 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: 1992-06-01 至 1996-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9202322&HistoricalAwards=false
• 关键词: Resting; Eggs; Marine; Copepods; How

During the last two decades more and more studies have demonstrated that the population dynamics of copepods in coastal areas are dependent upon the existence of benthic resting eggs. Understanding the numerical contribution of eggs to naupliar recruitment is not sufficient, however, to accurately predict population and community dynamics especially on evolutionary time scales. If eggs accumulate over an extended period of time (greater than a reproductive season) and form an egg bank, their hatching may slow the rate of evolutionary change of the species. This is because egg banks represent the genetic history of the population. The longer eggs survive the greater will be the genetic memory contained in the egg bank. These field studies will determine if eggs can survive at least three years in situ. The impact of anoxia and hydrogen sulfide on resting egg viability will be assessed in laboratory experiments designed to simulate field conditions.

在过去的二十年里，越来越多的研究 表明沿海桡足类的种群动态 这些区域取决于底栖产卵的存在。 了解卵对无节幼体的数量贡献 然而，招募不足以准确预测 种群和群落动态，特别是进化时间 鳞片 如果卵子长时间堆积 （大于繁殖季节）并形成卵子库， 孵化可能会减缓物种进化的速度。 这是因为卵子库代表了 人口 卵存活的时间越长， 保存在卵子库里的遗传记忆 这些实地研究将 确定鸡蛋是否能在原地存活至少三年。 的 缺氧和硫化氢对休眠卵活力影响将 在实验室实验中进行评估， 条件