Wavelike propagation of stretching and shrinkage in the surface of the newt's egg before the first cleavage
Wavelike propagation of stretching and shrinkage in the surface of the newt's egg before the first cleavage
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第一次卵裂前蝾螈卵表面拉伸和收缩的波状传播
DOI：
10.1002/jez.1402220108
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发表时间：
1982
影响因子：
--
通讯作者：
T. Sawai
中科院分区：
文献类型：
--
作者：
T. Sawai
将小碳颗粒附着在蝾螈Cynopspyrrogaster未分裂受精卵的表面，以分析卵表面的运动。在以5分钟间隔拍摄的静态图片上测量颗粒对之间的距离。平行于乳沟沟并垂直于其进行测量。动物极区的表面在第一次卵裂前约 40 分钟开始伸展，约 20 分钟后收缩。表面拉伸和收缩的阶段从动物极向赤道区域传播。在照片中观察到的收缩区域是更浓缩颜料的狭窄圆形区域，这可能是 Hara ('71) 发现的第二个表面收缩波。
Small carbon particles were attached to the surface of uncleaved fertilized eggs of the newt, Cynops pyrrhogaster, to analyze movement of the egg surface. Distances between pairs of particles were measured on still pictures photographed at intervals of 5 minutes. Measurements were made parallel to the cleavage furrow and perpendicular to it. The surface of the animal pole region began stretching about 40 minutes before the first cleavage, and then shrank about 20 minutes later. The phases of surface-stretching and -shrinkage propagated from the animal pole toward the equatorial region. The shrinking region was observed in the photographs as a narrow circular zone of more concentrated pigment which was probably the second surface contraction wave found by Hara ('71).