相关实验视频
Updated: Jan 10, 2026

09:39
In Vivo Imaging of Dauer-specific Neuronal Remodeling in C. elegans
Published on: September 4, 2014
11.7K
鱼幼虫的食物诱导的表型可塑性在整个发育过程中是可诱导和可逆的
Ariana Lee1, Isabel Villafuerte1, Sarah Kasem1
1Department of Biological Sciences, California State University Long Beach, Long Beach, CA, 90840, USA.
BMC biology
|November 22, 2025
概括
沙币幼虫表现出显著的表型可塑性,根据食物的可用性调整它们的身体和新陈代谢. 这种适应性在整个开发过程中是可逆的和可诱导的,为能源使用提供了显著的好处.
科学领域:
- 海洋生物学 海洋生物学
- 发育生物学 发展生物学
- 皮研究研究 皮研究
背景情况:
- 虫幼虫表现出食物诱导的表型可塑性,根据食物水平改变形态和生理.
- 这项研究的重点是沙币Dendraster excentricus.
研究的目的:
- 描述Dendraster excentricus幼虫的形态和生理可塑性的诱导和逆转.
- 了解幼虫发育过程中可塑性如何变化.
主要方法:
- 幼虫在不同的发育阶段 (受精后10,20,30天) 受到不同的食条件 (低到高,高到低).
- 测量了形态变化,特别是后口臂长度 (POAL).
- 评估了同化和增长效率.
- 单个幼虫在单独的实验中被跟踪.
主要成果:
- 切换到高食物迅速诱导了一个高养的表型,减少POAL和改变效率.
- 转向高食物的幼虫需要更多的时间来发展,但花费了类似的总能量来达到变形.
- 从高食物转换为低食物导致POAL的快速增加.
结论:
- 虫幼虫的可塑性在整个发育过程中是可逆的和可诱导的.
- 塑性在能源使用中提供了适应性的好处.
- 这些发现为探索表型可塑性的遗传和分子基础铺平了道路.
相关概念视频
Background and Environment Affect Phenotype
7.4K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
7.4K
Forced Transdifferentiation
2.3K
Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...
Artificial...
2.3K

