在有斑点的鸟蛋中,表面纹理异质
Marie R G Attard1,2,3, James Bowen2, Steven J Portugal1,4
1Department of Biological Sciences, School of Life and Environmental Sciences, Royal Holloway University of London, Egham TW20 0EX, UK.
Journal of the Royal Society, Interface
|July 12, 2023
概括
有图案的鸟蛋比它们的背景有更粗的色素斑点. 这种表面质地差异与息地和其他生命历史特征有关,这表明进化影响了蛋结构.
科学领域:
- 进化生物学 进化生物学
- 动物学 动物学
- 生物物理学的生物物理.
背景情况:
- 鸟蛋表现出多样化的色彩和图案,其拟议的功能包括密码,温度调节和信号传递.
- 蛋色素可能会影响表面质地,影响与水和微生物的相互作用.
研究的目的:
- 为了调查有图案的 (有斑点的) 蛋是否与没有图案的 (无斑点的) 蛋相比具有不同的表面地形.
- 为了确定卵色素,表面纹理和鸟类物种的生命历史特征之间的关系.
主要方法:
- 测量了来自204种有斑点和166种无斑点物种的蛋的表面粗度 (Sa),斜度 (Ssk) 和曲度 (Sku).
- 利用了基因组学控制的分析来评估表面地形上的差异,并确定蛋结构的预测因素.
主要成果:
- 在71%的研究物种中,与背景颜料相比,斑点卵显示出明显粗的前景颜料.
- 纯净的蛋在表面质地上与斑点蛋的背景颜料没有什么区别.
- 表面粗度的差异在来自密集息地的物种中更为明显,并且与各种生活历史特征 (如饮食,巢类型和离合器大小) 相相关.
结论:
- 蛋表面质地,特别是前景和背景色素之间的差异,是由与息地和生命历史战略相关的进化压力形成的.
- 生命史的特征在现代鸟类蛋表面纹理的多样化中发挥着重要作用.
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