【摘要】 通过扫描电子显微镜和电感耦合等离子体发射光谱法（ICP-AES）分析鸳鸯（Aix galericulata）卵壳的微观结构及元素组成。结果表明：鸳鸯卵壳由表面晶体层、栅栏层、锥体层和壳膜层构成，其中,栅栏锥体层占卵壳厚度的67.4%，为主要支撑结构；卵壳表面晶体层相对较薄，仅占10.5%，但具有显著的防水性和抗病原体附着功能。元素分析结果显示：Ca元素在卵壳中含量最高，占卵壳总质量的98%，其在卵壳结构硬度和强度中起关键作用；P、Na和Mg等元素含量远低于Ca，但较其他元素含量较高，而Re、Al、Rb和Nb等稀有元素则含量较低，Pt、Zr和Au等稀有元素含量更低，尽管这些元素在卵壳中的绝对含量较小，但由于其独特的物理化学性质，可能对卵壳的耐腐蚀性和结构稳定性具有贡献。本研究揭示了鸳鸯卵壳的复杂结构和多样元素组成，为理解该物种对不同生境的适应策略提供了新的视角。研究成果为鸳鸯及其他濒危鸟类的生境管理和人工繁育提供基础资料。更多还原

【Abstract】 In contemporary research, Aix galericulata, designated as a nationally protected species in China, has emerged as a focal point in ecological conservation studies owing to its distinctive behavioral ecology and escalating habitat pressures.This investigation employed Scanning Electron Microscopy(SEM) and Inductively Coupled Plasma Atomic Emission Spectroscopy(ICP-AES) to systematically examine the microarchitectural organization and elemental distribution within Aix galericulata eggshells. Analytical findings demonstrate that the eggshell comprises four distinct strata: a surface crystalline layer, palisade layer, conical layer, and shell membrane. The palisade-conical complex constitutes 67.4% of the total eggshell thickness, functioning as the principal load-bearing structure. Although the surface crystalline layer represents merely 10.5% of the total thickness, it exhibits critical hydrophobic and antimicrobial functionalities. Quantitative elemental profiling revealed calcium(Ca) as the predominant constituent, accounting for 98% of the total mass, thereby substantiating its essential contribution to mechanical robustness. Phosphorus(P), sodium(Na), and magnesium(Mg) were identified as secondary components, while trace elements including rhenium(Re), aluminum(Al), rubidium(Rb), and niobium(Nb) were detected at reduced concentrations. Notably, platinum(Pt), zirconium(Zr), and gold(Au) manifested in minimal quantities. These trace elements, despite their low abundance, may enhance the eggshell’s corrosion resistance and biomechanical stability through synergistic physicochemical interactions. The present research elucidates both the hierarchical complexity and elemental diversity of Aix galericulata eggshells, while offering substantive implications for understanding environmental adaptation mechanisms. These insights hold considerable value for advancing conservation strategies and optimizing captive breeding protocols for Aix galericulata and related avian taxa.更多还原