最早的化石是蚊子的化石
Dany Azar1, André Nel2, Diying Huang3
1State Key Laboratory of Palaeobiology and Stratigraphy, Center for Excellence in Life and Palaeoenvironment, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China; Lebanese University, Faculty of Science II, Natural Sciences Department, Fanar - El-Matn, P.O. Box 90656 Jdeidet, Beirut, Lebanon.
Current biology : CB
|December 5, 2023
概括
在低白时期的珀中发现的具有穿孔口腔的雄性蚊子表明,蚊子在血液养的早期起源. 这一发现扩展了化石记录,并为血液的进化提供了洞察力.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 雌性蚊子是臭名昭著的食血昆虫,以引起过敏反应和传播病原体而闻名.
- 昆虫的血可能是从植物养进化而来的,穿孔吸的口腔被抽出用于脊椎动物的血液养.
- 对于古老的吸血性血统,特别是蚊子的化石记录稀少,这阻碍了对血液养起源和时间的理解.
研究的目的:
- 研究蚊子进化起源和早期血液养多样化的研究.
- 为了将Culicidae家族的绝对化石发生延伸到白纪早期.
- 为了解古生态学和早期血的进化背景提供见解.
主要方法:
- 在黎巴嫩的低白纪珀中发现和分析保存得非常好的蚊子化石.
- 化石口腔部位的形态检查,专注于下和乳腺.
- 化石血统在Culicidae家族中的家族遗传位置.
主要成果:
- 发现了两只同类的雄性蚊子,它们有刺穿吸的口腔,包括牙的下和.
- 这些雄性化石表明了吸血行为,挑战了只有雌性蚊子吃血的假设.
- 这些化石代表了比Burmaculicinae早些时候分离的血统,将该家族的确切发生延伸到白纪早期.
结论:
- 在白纪早期发现的吸血性雄性蚊子将Culicidae家族已知的化石记录推向后方.
- 这些发现缩小了蚊子"幽灵血统"的差距,并为血液养的早期进化提供了关键证据.
- 在雄性中存在专门的穿孔口腔部位表明蚊子中血液的进化历史比以前理解的更为复杂.
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