中华涡蛛（Octonoba sinensis）的核型

报道了中华涡蛛的染色体数目，形态结构和性染色体组成，实验材料采自石家庄郊区交园。细胞学数据主要来自对胚胎细胞有丝分裂中期的观察。实验结果表明：中华涡蛛的染色体数目是；雄性体细胞为１７，雌性体细胞为１８。性别决定机制是ＸＯ型，Ｘ染色体是全部染色体中最长的一个，并且是唯一的亚中着丝粒染以体，其常染色体均为端或亚端着丝粒染色体。

On the Karyotype of Octonoba sinensis

Peported the chromosomal number,chromosamal form and structure and sex -chromosome components of Octonoba sinensis. The experiment material were collected from the suburbs of Shijiazhuang. The cytological data were mainly obtained from mitosic metaphase of the embryo cells. the result shows the chromosomal number of Octonoba sinensis is as follows:the somatic cells have 17 chromosomes in the male and 18chromosomes in the female respectively. The mechanism of sex - determination is of the XO type. The X - chromosome is the longest (pairs)of the karyotype. All aotosomes seen to consist of telo - or acro - centriecs as demonstrated by its C - bands specimen. Analysis of C - banding specimen proves that at the long arm of the aotosome 1# there are four deep C-bands. 2# is sat-chremosome. All chromosomes reveal clear centromere bands.The long arms of 1#, 2#, 4#, 5# also reveal T-bands. In the specimen of G-banding technique stable bands have been obtained.