EPISODE · Jun 2, 2026 · 24 MIN
1069-坦噶尼喀湖慈鲷肠道细胞的自适应进化
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这项研究通过对坦噶尼喀湖24种具有不同摄食习性的丽鱼进行单细胞转录组分析,揭示了鱼类肠道的适应性进化机制。研究发现,丽鱼为了适应特定的食物来源,其肠道中的前部吸收细胞(enterocytes 1)在细胞比例和基因表达层面均发生了显著改变。这些细胞展现出较低的进化约束和更快的演变速率,为物种的快速营养特化提供了生物学基础。结果表明,丽鱼的摄食特化不仅涉及口颌结构的变化,更通过肠道上皮细胞的分子重塑来实现。这种跨越多个生物层级的协同演化,有力地推动了丽鱼在复杂生态位中的快速多样化。References:Fages A, Luxey M, Ronco F, et al. Adaptive cellular evolution in the intestine of hyperdiverse cichlid fishes[J]. Nature, 2026: 1-8.前往小宇宙评论区与主播互动
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1069-坦噶尼喀湖慈鲷肠道细胞的自适应进化
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