头鱼 (Sphyrna tiburo) 的胚胎发育,是一种活生生的头鱼
Steven R Byrum1,2, Bryan S Frazier3, R Dean Grubbs4
1Department of Biology, University of Florida, Gainesville, Florida, USA.
概括
本研究介绍了首个详细的发育阶段序列的帽头 (Sphyrna tiburo),记录了从第23阶段到出生的胚胎发育. 这项研究提供了关于脊椎动物面发育和形态多样性的关键见解.
科学领域:
- 发展生物学 发展生物学
- 鱼类学 鱼类学 鱼类学
- 比较形态学的比较形态学
背景情况:
- 子鱼 (Sphyrnidae) 具有独特的头部形状,但该群体没有明确的发育阶段表.
- 头鱼 (Sphyrna tiburo) 在近海水域丰富,是最小的头鱼物种,因此非常适合进行发育研究.
- 之前的研究缺乏对头胚胎发育的全面分期.
研究的目的:
- 为了建立第一个全面的胚胎分期系列的帽头 (Sphyrna tiburo).
- 记录关键的发育阶段,特别是那些导致形成独特的头叶的阶段.
- 为鱼和脊椎动物的比较发育研究提供基础资源.
主要方法:
- 在渐进的发育阶段收集和记录多个胚胎大头鱼标本.
- 利用各种技术,捕捉在发育过程中发生的关键形态变化.
- 建立从第23阶段 (类型期) 到第35阶段 (出生) 的阶段序列.
主要成果:
- 介绍了头顶鱼 (Sphyrna tiburo) 的第一个全面的胚胎分期系列.
- 该系列涵盖了从类型时期 (第23阶段) 到出生 (第35阶段) 的发展.
- 记录了面发育的关键阶段,导致头叶的形成.
结论:
- 这一阶段序列提供了关于难以进入的脊椎动物发展的基本数据.
- 这些发现提供了关于脊椎动物极端面多样性的起源的见解.
- 这项工作作为未来对鱼和脊椎动物的发育基因进行比较研究的平台.
更多相关视频
12:41In ovo Electroporation of miRNA-based Plasmids in the Developing Neural Tube and Assessment of Phenotypes by DiI Injection in Open-book Preparations
Published on: October 16, 2012
16.5K
09:31Expression of Fluorescent Proteins in Branchiostoma lanceolatum by mRNA Injection into Unfertilized Oocytes
Published on: January 12, 2015
11.1K
相关概念视频
Cleavage and Blastulation
45.3K
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
45.3K
Development of Blood Vessels
627
The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
627
Development of the Heart
1.0K
The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart...
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart...
1.0K
