Abstract—

The paper reports a process of sexual reproduction in the Black Sea diatom Climaconeis scalaris (Brébisson) E.J. Cox, 1982, initiated in laboratory conditions. A crossing system of this species allows both homo- and heterothallic reproduction. The fertilization is allogamous. Diploid mother gametangial cells secreted mucilage, forming a mucilage track, while actively gliding relative to each other. Each gametangium in a pair produced two elongated, cylindrical round-ended haploid gametes, which were largely morphologically and behaviorally isogamous. The division of the protoplast of the gametangial cell occurred in the transapical plane without the rearrangement of gametes. Growing auxospores were located parallel to the parent frustules. The research produced data on changes in the cell size, number of chloroplasts, and the position of cardinal points in the life cycle of the examined species.

中文翻译：

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黑海硅藻Climaconeis scalaris（Brébisson）EJ Cox的有性繁殖

摘要-

该论文报道了黑海硅藻Climaconeis scalaris中的有性生殖过程。（Brébisson）EJ Cox，1982年，在实验室条件下启动。该物种的杂交系统允许同种和异种繁殖。受精是同性的。二倍体母配子细胞分泌粘液，形成粘液径迹，同时彼此相对滑动。一对中的每个配子产生两个细长的圆柱形圆端单倍体配子，这些配子在形态和行为上都是同性的。在不经配子重排的情况下，经配角细胞的原生质体分裂发生在经心尖平面中。生长的孢子与母体平果平行。这项研究产生了有关被调查物种生命周期中细胞大小，叶绿体数量以及基点位置变化的数据。