A STUDY OF WHIRLPOOL-LIKE STUCTURES OF MICROPYLE OF THE MATURE EGGS OF Misgurnus anguillicaudatus

Since micropyle of mature eggs of Misgurnus anguillicaudatus and other bony fishes are enclosed by membranes of the eggs, it has been intriguing why spermia are able to enter micropyle of mature eggs in certain directions. Most scholars specializing in fish fertilization cytology guessed that there must be a special kind of chemical substance in cortices of

泥鳅成熟卵受精孔涡旋平面纹路曲线的数学模型

泥鳅成熟卵受精孔外围的形态,在扫描电子显微镜的荧光屏上呈现完整的左涡旋状结构。本文通过把涡旋平面纹路与标准对数螺线比照,建立了涡旋平面纹路曲线的数学模型,再通过对卵膜孔周围流场的计算,揭示了这种鱼类受精作用的数学物理因素。