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在珀中保存的白纪羽毛上的茎虫

Yanjie Zhang¹, Alexandr P Rasnitsyn², Weiwei Zhang³

¹College of Life Sciences, Capital Normal University, Beijing 100048, China.

Current biology : CB

|February 6, 2024

概括

来自白纪珀的化石茎虫虫揭示了古代昆虫的进化. 这一发现显著扩展了已知的Phthiraptera化石记录,为寄生虫的起源提供了洞察力.

科学领域:

古生物学的古生物学
昆虫学昆虫学是一门学科.
进化生物学进化生物学

背景情况:

菲蒂拉普特 (真) 是外寄生虫,化石记录不佳.
之前关于起源的分子钟数据缺乏明确的化石证据.

研究的目的:

描述一个新的家族的茎虫从白纪中期的珀.
根据化石证据,为Phthiraptera序列确定最低年龄.

主要方法:

描述两个成年茎虫标本保存在克珀.
遗传学分析以确定新种类在虫中的位置.

主要成果:

发现了一种新的茎虫家族,表现出Amblycera血统的特征.
这些化石将已知的虫化石记录推迟至少5500万年.
化石中的原始特征提供了自由生活和寄生虫之间的进化联系.

结论:

新的珀化石为Phthiraptera建立了一个最小的白纪年龄.
这些发现表明,子中的外寄生虫特征具有平行演变.
这一发现增强了对早期进化和宿主-寄生虫关系的理解.

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