Morphology of the egg shell and the developing embryo of the Red Palm Weevil, Rhynchophorus ferrugineus (Oliver)
Morphology of the egg shell and the developing embryo of the Red Palm Weevil, Rhynchophorus ferrugineus (Oliver)
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DOI：
10.1016/j.sjbs.2010.02.012
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发表时间：
2010-04-01
影响因子：
4.4
通讯作者：
Moursy, Eman B.
中科院分区：
文献类型：
--
作者：
Al-Dosary, Mona M.;Al-Bekairi, Abdullah M.;Moursy, Eman B.
收获的红红喙头鱼卵呈卵圆柱形，平均长1.09毫米，宽0.43毫米，长宽比为4.42。可以看到电子致密材料的绒毛膜层覆盖了卵的绒毛膜外结构。蛋主体绒毛膜呈现多边形图案，蛋的结构表面由不规则互连凹槽系统支撑。本研究首次描述了红棕象甲 R. ferrugineus 卵的珠孔器。发现两个珠孔开口靠近卵后宽极的中心。每个珠孔开口都有一个小孔，其周围的绒毛膜是多孔的，并且密集地设置有微小的突起，使精子能够穿透卵子。呼吸气孔分布在卵囊绒毛膜表面区域的网状边界上。在鸡蛋另一侧的前部检测到孵化区域。观察红红红线虫卵外观和形状的变化以及胚胎发育的发生率。 (C) 2010 年沙特国王大学。版权所有。
The harvested eggs of Rhynchophorus ferrugineus are ovo-cylindrical shaped, averaged 1.09 mm in length and 0.43 mm in width, with ratio of L\W 4.42. The chorionic layer of electron dense material is seen covering the exochorion structure of the eggs. The egg main body chorion exhibits a polygonal pattern and architecture surface of the egg is supported by a system of irregular interconnecting grooves. The micropylar apparatus of the eggs of the Red Palm Weevil, R. ferrugineus is described in the present study for the first time. Two micropylar openings are found closed to the center of the posterior wide pole of the egg. Each micropylar opening presents a single small orifice and its surrounding chorion is porous and densely set with tiny projections allowing the spermatozoa to penetrate the egg. Respiratory aeropyles are distributed on the borders of reticulations in the area chorionic surface of egg capsule. The hatching region is detected on the anterior part at the opposite side of the egg. Changes in the appearance and shape of R. ferrugineus eggs as well as the incidence of embryonic development are observed. (C) 2010 King Saud University. All rights reserved.