Central Muga Eri Research and Training Institute, Central Silk Board, Lahdoigarh, Jorhat, Assam 785700, India.
Microsc Res Tech. 2010 Mar;73(3):234-9. doi: 10.1002/jemt.20781.
The egg of Samia ricini (Donovan), is oval or laterally flattened ellipsoid, freshly laid eggs are candid white while the chorion is colorless and semi-transparent. The surface of the chorion is covered with network patterns of polygons and their shapes are common in the whole surface region. The boundaries between polygons made ridges had distinct acropyles at three-cell junctions. The numbers of aeropyles are variable according to their structures both in the lateral flat and marginal regions. During the course of egg development, no significant structural changes were observed in either the polygonal structures or the overall morphology of the egg. However, the size of the aeropyles kept on changing as the egg matures. The aeropyle increases initially upto day-9 of egg development and then decreases as it approach hatching. Lines of weaknesses were not observed at time of hatching or close to it. Hatching process of the newly emerge larvae are through gnawing. The larva eats their way out through the chorion membrane mostly from the anterior region. Egg buster or spine which aid in hatching are not present in the newly emerge larvae.This article was published online on 25 September 2009. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected 6 January 2010.
云斑天牛（Donovan）的卵呈椭圆形或横向压扁的椭圆形，刚产下的卵呈乳白色，而卵壳无色半透明。卵壳表面覆盖着多边形的网络图案，其形状在整个表面区域都很常见。多边形之间的边界形成了脊，在三细胞连接处有明显的气口。气口的数量根据其在横向平坦和边缘区域的结构而变化。在卵的发育过程中，无论是多边形结构还是卵的整体形态都没有观察到明显的结构变化。然而，随着卵的成熟，气口的大小一直在变化。气口最初在卵发育的第 9 天增加，然后在接近孵化时减少。孵化时或接近孵化时没有观察到弱点线。新孵化的幼虫通过啃咬来孵化。幼虫从卵壳膜的前部区域大部分吃出一条路来。在新孵化的幼虫中，没有帮助孵化的破卵器或刺。本文于 2009 年 9 月 25 日在线发表。随后发现一个错误。本通知包含在在线和印刷版本中，以表明两者都已在 2010 年 1 月 6 日得到纠正。
