精子储存管中的精子替代导致最后的男性精子在中占据优先地位
M Matsuzaki1, S Mizushima2, M Tsudzuki1,3
1Program of Food and AgriLife Science, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima City, Japan.
British poultry science
|November 29, 2023
概括
在储存管道中取代精子是最后一只雄性精子在中优先的关键. 精液血去除减少了精子的替代,而不同的品种改变了机制.
科学领域:
- 动物繁殖 动物繁殖
- 鸟类生物学 鸟类生物学
- 精子生理学 精子生理学
背景情况:
- 最后的男性精子优先 (LMSP) 机制决定了哪个男性的精子在多次授精后受精卵.
- 了解雌性生殖道内的精子动态对于鸟类繁殖和生育管理至关重要.
- 精子储存管 (SST) 在保持精子活力和影响精子竞争方面发挥着至关重要的作用.
研究的目的:
- 为了研究最后的男性精子优先 (LMSP) 在的机制.
- 检查多次人工授精 (AI) 后在SSTs中精子替代的作用.
- 为了确定精液等离子体 (SP) 和男性品种对精子替代动态的影响.
主要方法:
- 被人工授精 (AI) 用光染料标记的精子从白色Leghorn (WL) .
- 二次人工智能是在3天后使用标有不同核光染料的精子进行的.
- 量化了SST中的精子置换百分比;评估了SP移除/添加和不同品种 (禁止普利斯岩石 - BP) 的影响.
主要成果:
- 连续使用WL精子以3天的间隔进行人工智能,结果在SSTs中超过70%的精子被替换.
- 从第二次授精的精子中去除精子血显著减少了精子的替代.
- 阴道内注射SP没有影响精子释放,而使用BP精子用于二级AI显著增加了替代.
结论:
- 在SST中取代精子是驱动家LMSP的主要因素.
- 该研究成功地利用光染色和多种人工智能技术来可视化和量化精子动态.
- 这些发现突出了精子血和雄性品种对家禽精子竞争结果的影响.
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