摘要
报道了温室希蛛的染色体数目、形态结构和性染色体组成。从目前的结果可见,温室希蛛的染色体数目是:雄性体细胞染色体数为2n=22,雌性为2n=24。其性决定机制属于X_1X_2O型。所有染色体似乎均为端或亚端着丝粒染色体,这个结论被对其C-带标本的分析所证实。两个(对)X-染色体是最短的和次最短的,温室希蛛染色体C-带标本的分析没有观察到染色体间有明显的结构差异。在染色体G-带标本中,获得了稳定的带纹。
This paper reported the chromosomal number,chromosomal form and structure and sex-chromosome components of Achaearanea tepldariorum. The experiment material were collected from the suburbs of Shijazhuang. The cytological data were mainly obtained from mi-tosic metaphase of the embryo cells. The result shows the chromosomal number of Achaearanea tepidariorum is as follows: the somatic cell have 22 chromosomes in the male and 24 chromosomes in the female. It is considered that the mechanism of sex-determination is of the X1X2O-type. All chromosomes seem to consinst of telo- or aero-centries. This effect has been demonstrated by its C-bands specimen. Both (pairs) x-chromosomes are the shortest and sub-shortest. No difference in formation of all chromosomes has been observed on analysis of C-bands. In the specimen of G-banding technique stable bands has been obtained .
出处
《蛛形学报》
1995年第1期37-40,共4页
Acta Arachnologica Sinica
关键词
温室希蛛
染色体
C-带
G-带
Achaearanea tepidariorum Chromosome C-bands G-bands
