在古代全骨物种中,丸后的精子成熟
Viktoriya Dzyuba1, William L Shelton2, Ana E Hiott
1Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic. vdzyuba@frov.jcu.cz.
Scientific reports
|November 13, 2023
概括
丸后的精子成熟发生在鱼中,这表明holostei鱼的中间进化位置. 这项研究详细介绍了鱼类物种化中的泌尿器官解剖学变化.
科学领域:
- 鱼类学 鱼类学 鱼类学
- 比较解剖学的比较解剖学
- 进化生物学 进化生物学
背景情况:
- 鱼类的物种化涉及到泌尿器官系统解剖学的重大变化.
- 在Teleostei,男性生殖和排泄系统是分开的,与古代Chondrostei和Holostei不同.
- 丸后精子成熟 (PTSM) 在鱼中已知,但未在全骨动物中得到证实.
研究的目的:
- 为了研究精液和脏通道在全骨动物中的功能性亲密性.
- 确定男性 (Holostei) 丸后精子成熟 (PTSM) 的存在和程度.
- 为了澄清霍洛斯泰关于泌尿器官系统解剖学的进化立场.
主要方法:
- 从Lepisosteus platostomus的丸,阴道和沃尔夫管道收集的精子样本.
- 在体外PTSM程序涉及精子与精液的化.
- 在鱼和鱼中对泌尿器官管道进行实验性染色,以可视化管道相互连接.
主要成果:
- 精子运动性仅在沃尔夫管道中观察到,而不是在丸或管道中.
- 在试管婴儿化过程中,在精子输出管中的精子中显示出显著的PTSM (可达75%的运动性).
- 泌尿器官管道解剖揭示了精子和脏管道在和鱼之间明显的相互联系.
结论:
- 丸后精子成熟 (PTSM) 发生在男性 (Holostei).
- 霍洛斯泰 (Holostei) 类在泌尿器官系统解剖学方面表现出一个中间的进化位置,位于Teleostei和Chondrostei之间.
- 这项研究为鱼类生殖系统的进化过渡提供了解剖学证据.
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