【摘要】 本文通过对泥鳅、大银鱼、鲂鱼等真骨鱼卵膜孔形态结构的研究，把目前已发现的奇异结构分为涡旋卷吸型、沟脊降落型、降旋混合型，并定量地建立了它们的数学模型．然后，又通过对卵膜孔周围流场的动力学分析，确证真骨鱼精子入卵除化学因素外，还存在着不容忽视的数学物理因素──机械动力作用．这两者相得益彰，形成了一个完整的精子引导系统．更多还原

【Abstract】 The micropyle’s structures of the teleost,such as Misgurnus anguillicaudatus,protosalanx hyalocranius and Megalobrama terminalis,were divided into three types:vortex-sunk,fall-along-groovex and ridges,fall-vortex-compound,and their mathematical models were established quantitatively.The dynamic analysis of flow field around egg proved that there exists unnegligible mathematical and physical dynamic factors,mechanical impetus acts,for the teleost’s sperm entering micropyle besides the chemical explanation.Both factors form a complete guiding system for sperm.更多还原