大脑的可塑性性质变态,由性别变化的鱼类揭示出来
Gabriel J Graham1, Justin S Rhodes1
1Department of Psychology, University of Illinois, Champaign, IL, USA.
Current opinion in neurobiology
|August 15, 2025
概括
珊瑚礁鱼表现出塑性性别决定,根据社会线索改变性别. 这个过程涉及大脑变化,激素信号和神经发生,影响生殖可塑性和脊椎动物的性进化.
科学领域:
- 神经内分泌学神经内分泌学
- 生殖生物学 生殖生物学
- 鱼类学 鱼类学 鱼类学
背景情况:
- 珊瑚礁鱼表现出了显著的生殖可塑性,经常表现出社会控制的顺序性雌雄性.
- 这些物种的性别决定不是固定的,可以受到社会层次和支配地位的影响.
研究的目的:
- 阐明在珊瑚礁鱼类的性别决定和性别变化的基础上的神经和内分泌机制.
- 调查社会线索,大脑信号和神经发生在启动和调节性别变化的作用.
主要方法:
- 分析神经解剖学,生理学,形态学和行为,以应对社会层次的变化.
- 对荷尔蒙变化 (皮质醇) 和神经调节器信号 (多巴胺,阿尔金因,毒素) 的研究.
- 检查放射性质细胞功能,雌激醇合成,芳酶活性,神经发生和调节 pituitary-gonad轴的神经通路中的基因表达.
主要成果:
- 社会层次的转变引发了大脑信号的变化,包括皮质醇释放和神经调节器.
- 放射性质细胞检测到这些神经变化并调节局部雌激醇合成,影响神经发生和基因表达.
- 变化的垂体腺体调节导致淋巴体的转变,前生殖通常比前生殖更快.
结论:
- 鱼类的性别变化是一个由大脑启动的复杂过程,涉及社交线索,神经信号和内分泌通路之间的复杂相互作用.
- 了解这些机制,可以了解神经内分泌的生殖调节和性别差异的演变.
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