父母的热条件影响了斑马鱼幼虫中对警报提示的脑活动反应
Jade M Sourisse1,2, Julie L Semmelhack3, Celia Schunter1
1The Swire Institute of Marine Science, School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China.
PeerJ
|October 14, 2024
概括
父母和发育温度影响斑马鱼大脑对警报线索的反应. 父母暴露于热量会激发后代的神经回路,以便在变暖的环境中更快地做出反应.
科学领域:
- 神经科学是一个神经科学.
- 生态生态学 生态生态学
- 遗传学 是一个遗传学.
背景情况:
- 温度显著影响了ectotherm生理学.
- 现型可塑性可以增强鱼类跨代对高温的抵抗力.
- 父母和发育热史可以塑造后代的反应.
研究的目的:
- 研究父母和发育温度对幼虫斑马鱼大脑活动的影响.
- 确定热条件如何影响神经对嗅觉线索的反应.
- 了解温度对鱼类神经生理学的跨代影响.
主要方法:
- 幼虫斑马鱼 (Danio rerio) 在父母繁殖和后代发育过程中暴露在控制 (28°C) 或升高 (30°C) 的温度下.
- 活成像被用来观察对警报信号的反应中的telencephalon活动.
- 量化时间到最大的大脑活动和大脑活动持续时间.
主要成果:
- 父母的高温暴露减少了后代的最大脑活动响应时间,无论后代的发育温度如何.
- 大脑活动持续时间受到父母和后代热条件之间的相互作用的影响.
- 当后代体验到与父母相同的温度 (控制和升高) 时,脑活动持续时间较短.
结论:
- 父母的热史可以改变后代的神经电路刺激性.
- 温度升高可以改变鱼类的神经传输过程.
- 父母的影响可能会在变暖的环境中为后代准备嗅觉信号,这表明适应性的跨代可塑性.
相关概念视频
00:55Parental Care
Many animals exhibit parental care behavior, including feeding, grooming, and protecting young offspring. Parental care is universal in mammals and birds, which often have young that are born relatively helpless. Several species of insects and fish, as well as some amphibians, also care for their young.
02:27Background and Environment Affect Phenotype
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...