EPISODE · Oct 26, 2025 · 22 MIN
410. 斑点鼠鱼额头上的牙齿
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该文章报道了一项关于斑点鼠鱼的独特发现，这种深海鱼类在其额头上长有被称为夹持器的附肢，上面布满了尖锐的结构。研究人员通过微型CT扫描和组织样本证实，这些结构是真正的牙齿，而不是鲨鱼和鳐鱼身上常见的齿状突起，首次发现了颌骨以外的牙齿。这些额头上的牙齿被雄性鼠鱼用来在交配时抓住雌性，颠覆了生物学中关于牙齿严格属于口腔结构的长期假设。研究还追溯了化石记录，发现了一个拥有约3.15亿年历史的早期例子，表明这种结构可能经历了漫长的演化。内容来源：https://www.smithsonianmag.com/smart-news/this-deep-sea-fish-has-teeth-on-its-forehead-and-it-uses-them-for-sex-180987300/
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410. 斑点鼠鱼额头上的牙齿
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