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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Ultra structure of subitaneous and diapausing eggs of planktonic copepod Sinodiaptomus (Rhinediaptomus) indicus
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Ultra structure of subitaneous and diapausing eggs of planktonic copepod Sinodiaptomus (Rhinediaptomus) indicus

机译：浮游co足类印度对虾（Rhinediaptomus）的亚稳态和滞育卵的超结构

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摘要

Sinodiaptomus (Rhinediaptomus) indicus produces subitaneous eggs in normal condition and diapausing eggs during unfavourable environmental condition. Diapausing eggs occurred both in the sediment samples from wild and laboratory culture system. The structure of subitaneous and diapausing eggs of the freshwater diaptomid S. (R.) indicus is described. Scanning electron microscopic (SEM) observations of these eggs showed marked variation in the surface ornamentation. Subitaneous egg has a single type of process, while diapausing egg has two different types of processes on its surface. Transmission electron microscopic (TEM) studies revealed that the plasma membrane of subitaneous egg is surrounded by a thin three-layered outer chorion, compared to highly complex, thick and four-layered outer chorion of the diapausing egg. Variation is also observed with regard to the nature of electron density of its layers.
机译：中华dia（Rhinediaptomus）indicus在正常情况下会产生亚卵卵，而在不利的环境条件下会造成滞育卵。在野生和实验室培养系统的沉积物中，均出现滞育卵。描述了淡水diaptomid S.（R.）indicus的亚卵和滞育卵的结构。这些卵的扫描电子显微镜（SEM）观察表明，表面装饰有明显变化。亚次卵具有单一类型的过程，而滞育卵在其表面具有两种不同类型的过程。透射电子显微镜（TEM）研究表明，与滞育卵的高度复杂，厚而四层的外部绒毛膜相比，亚蛋的质膜被薄的三层外部绒毛膜包围。关于其层的电子密度的性质也观察到变化。

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