Histological and quantitative changes in the annual testicular cycle of Triturus marmoratus marmoratus
Histological and quantitative changes in the annual testicular cycle of Triturus marmoratus marmoratus
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Triturus marmoratus marmoratus 年度睾丸周期的组织学和数量变化
DOI：
10.1139/z90-011
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发表时间：
1990
影响因子：
1.4
通讯作者：
R. Paniagua
中科院分区：
文献类型：
--
作者：
F. Sáez;B. Fraile;R. Paniagua
1987年每月15日采集8只雄性大理石蝾螈（Triturusmarmoratusmarmoratus），对其精巢进行了光镜和电镜观察。还进行了定量研究，以确定每年的睾丸周期和每种生殖细胞类型在全年中占据的每个睾丸的总体积。生殖细胞的超微结构特征是初级精原细胞中发育良好的高尔基复合体;初级精母细胞中有多个小的网质体和核泡;位于外周的线粒体;圆形精子细胞中有长链的内质网和亚表面池;滤泡细胞中有丰富的粗面内质网。次级精母细胞有一个短的或没有间期，并在前期观察到。每年的睾丸周期包括三个时期：（i）生殖细胞增殖（5月至6月），其特征是初级精母细胞的形成，这些精母细胞进行减数分裂，产生圆形精子细胞;
Eight male marbled newts (Triturus marmoratus marmoratus) were collected on the 15th of each month in 1987 and their testes were studied by light and electron microscopy. Quantitative studies also were performed to establish the annual testicular cycle and the total volume per testis occupied by each germ cell type throughout the year. Characteristic ultrastructural features of germ cells are the occurrence of a well-developed Golgi complex in primary spermatogonia; multiple small dictyosomes and nuclear blebs in primary spermatocytes; peripherally situated mitochondria; long strands of endoplasmic reticulum and subsurface cisternae in round spermatids; and abundant rough endoplasmic reticulum in follicular cells. Secondary spermatocytes have a short or absent interphase and are observed in the prophase. The annual testicular cycle comprises three periods: (i) germ cell proliferation (May–June), characterized by the formation of primary spermatocytes that undergo meiosis, giving rise to round spermatids; ...