Non-sinusoidal bending waves of sperm flagella.
Non-sinusoidal bending waves of sperm flagella.
复制标题
精子鞭毛的非正弦弯曲波。
DOI：
--
复制
发表时间：
1965
影响因子：
2.8
通讯作者：
C. Brokaw
中科院分区：
文献类型：
--
作者：
C. Brokaw
詹姆斯·格雷爵士（1955年）对海胆精子运动的摄影研究所刺激的鞭毛运动的分析，使用正弦波作为鞭毛主动弯曲波的方便数学模型。Machin（1958）根据Pringle（1957）的建议，提出了一个非常简单的模型，描述了沿着鞭毛分布的弯曲元件的机械协调，以产生传播的正弦波。然而，在后来的一篇论文中，Machin（1963）指出，这些弯曲元件必须表现为非线性，在这种情况下，弯曲波可能不是正弦的。布罗考和赖特（Brokaw & Wright，1963年）展示的照片显示，至少在一个例子中--甲藻属角藻的大型后鞭毛--弯曲波不是正弦波，而是包含恒定弯曲的区域，形成圆弧，由较短的未弯曲区域隔开。
本文将介绍和讨论三个动物门的海洋无脊椎动物精子鞭毛弯曲波的照片
参考Brokaw和Wright提出的弯曲波的描述。这三个物种的精子之间的差异已被观察到，
在一定的实验条件下，它们的运动是相似的，但本文将强调它们运动的共同特征。
The analyses of flagellar movement stimulated by Sir James Gray's (1955) photographic study of the movement of sea-urchin spermatozoa have used sine waves as a convenient mathematical model for the active bending waves of flagella. Machin (1958), following a suggestion of Pringle (1957), outlined an attractively simple model for the mechanical co-ordination of bending elements distributed along a flagellum to give propagated sine waves. However, in a later paper, Machin (1963) showed that these bending elements must behave non-linearly, in which case the bending waves will probably not be sinusoidal. Brokaw & Wright (1963) presented photographs showing that in at least one case-the large posterior flagellum of the dinoflagellate Ceratium-the bending waves are not sine waves, but instead contain regions of constant bending, forming circular arcs, separated by shorter unbent regions.
In this paper photographs of flagellar bending waves of spermatozoa from marine invertebrate representatives of three animal phyla will be presented and discussed
with reference to the description of bending waves proposed by Brokaw and Wright. Differences have been observed between the spermatozoa of these three species in
respect of their movements under certain experimental conditions, but the common features of their movements will be emphasized in this paper.