学校教育的进化推动了古皮的神经解剖学和运动特征在掠食环境中的变化
Alberto Corral-Lopez1,2,3,4, Alexander Kotrschal5,6, Alexander Szorkovszky7
1Department of Zoology and Biodiversity Research Centre, University of British Columbia, Vancouver, Canada. alberto.corral@ebc.uu.se.
Nature communications
|September 27, 2023
概括
在鱼中为两极分化的人工选择增强了集体运动和面临威胁的反捕食者行为. 大脑形态的变化,而不是视力敏,很可能解释了这些协调的运动适应.
科学领域:
- 行为生态学 行为生态学
- 神经科学是一个神经科学.
- 进化生物学 进化生物学
背景情况:
- 集体动物行为,如同步运动,对于生存和食至关重要.
- 了解集体运动的神经基础和进化驱动因素,特别是反捕食者反应,是一个重大的科学挑战.
研究的目的:
- 为了调查人工选择对两极分化如何影响集体运动和掠食者检查行为在危险的Guppies.
- 探索这些选择的行为变化的神经解剖学和感官基础.
主要方法:
- 实验进化使用高极化或低极化选择的古皮.
- 行为测定测量学校教育和捕食者检查在存在或没有威胁的情况下.
- 对大脑区域进行神经解剖学测量.
- 视觉敏度和时间分辨率的测试.
主要成果:
- 人工选择的群体在面临威胁时,与对照群体相比,呈现出增强的两极分化.
- 神经解剖学分析显示,在被选中的个体中,与感知,恐惧,注意力和运动反应相关的大脑区域的变化.
- 行为差异与视觉感知变化无关,而是与大脑中更有效的感官输入中继有关.
结论:
- 大脑形态在协调运动和反捕食者策略的演变中发挥着关键作用.
- 对集体行为特征的选择可以导致特定的神经解剖学适应.
- 高效的神经处理,而不是增强的感官感知,可能会提高集体反捕食者反应.
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