We examined the morphology of fertilized egg and ultrastructures of fertilized egg envelopes of Ancistrus cirrhosus belong to Loricariidae using light and electron microscopes. The fertilized eggs formed a mass on the spawning place and were yellowish, spherical, non-transparent, demersal, adhesive, and a narrow perivitelline space. But, the adhesiveness of fertilized eggs was disappeared after spawning excluding contact parts. The micropyle with funnel shape was surrounded by 15–19 furrow lines of egg envelope in a spoke-like pattern. The outer surface of egg envelope has smooth side and inner surface of egg envelope was rough with grooves. Also, the total thickness of the fertilized egg envelope was about 32.58 ± 0.85 μm (n = 20), and the fertilized egg envelope consisted of three layers, an outer adhesive electron-dense layer, a middle layer with low electron density and an inner electron-dense layer with grooves in counter structure from other most teleost. Collectively, these morphological characteristics and adhesive property of fertilized egg, and ultrastructures of micropyle, outer surface, and section of fertilized egg envelope are showed species specificity.

中文翻译：

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Ancistrus cithrosus、Loricariidae、Teleostei 受精卵包膜的超微结构


采用光镜和电镜对鳅科Ancistrus ci rhosus 的受精卵形态及受精卵包膜超微结构进行了观察。受精卵在产卵处形成团块，呈淡黄色、球形、不透明、位于底层、有粘性、卵周间隙狭窄。但是，受精卵产卵后，除了接触部分外，其粘附性就消失了。珠孔呈漏斗状，周围有15-19条卵膜皱纹线，呈辐条状。蛋包膜的外表面具有光滑面，蛋包膜的内表面粗糙且具有凹槽。此外，受精卵包膜的总厚度约为32.58±0.85μm（n = 20），受精卵包膜由三层组成，外层粘性电子密集层，中层低电子密度层和内层。电子致密层，具有与其他大多数硬骨鱼相反的结构中的凹槽。总的来说，受精卵的这些形态特征和粘附性，以及珠孔、外表面和受精卵包膜截面的超微结构都表现出物种特异性。