›› 2005, Vol. 48 ›› Issue (2): 310-313.doi:

• 研究论文 • 上一篇    下一篇

十二种沫蝉的染色体研究 (同翅目: 沫蝉总科)

田润刚1,张雅林2*,袁  锋2   

  1. 西北农林科技大学植保资源与病虫害治理教育部重点实验室
  • 出版日期:2005-07-11 发布日期:2005-11-20
  • 通讯作者: 张雅林

Meioses in twelve species of Cercopoidea (Insecta: Homoptera) from China

TIAN Run-Gang1, ZHANG Ya-Lin2*, YUAN Feng2   

  1. Northwest Sci-Tech university of Agriculture and Forestry
  • Online:2005-07-11 Published:2005-11-20
  • Contact: ZHANG Ya-Lin

摘要: 观察了同翅目头喙亚目12种沫蝉雄性的染色体数目和减数分裂行为。通过对沫蝉总科现有核型资料的分析,认为沫蝉总科的核型特点是:①染色体较小,数目较多,总科内染色体数目变化范围较大,众数为2n=26(24+XO);②染色体的易位现象极为普遍,因此可以推测,通过染色体的易位导致染色体数目增加是核型进化的主要机制;③减数分裂前期Ⅰ具有典型的花束期,但没有弥散期。因此从精子发生来看沫蝉总科与叶蝉总科、角蝉总科和蝉总科的关系更为密切,而与蜡蝉总科的关系较远。头喙亚目的亲缘关系可能是:蜡蝉总科+{蝉总科+[沫蝉总科+(叶蝉总科+角蝉总科)]}。

关键词: 同翅目;沫蝉总科, 染色体, 减数分裂;核型

Abstract: Meioses in twelve species of Chinese spittle bugs were studied. The results indicated that their chromosome numbers are varied from 2n=16 to 30, and sex determination are all XO type. Karyotype characteristics of Cercopoidea are that: (1) Chromosome volumes are small, chromosome numbers are much varied, most  species have higher chromosome numbers, and the predominant type is 2n=26(24+XO). (2) Translocation occurs very frequently. Fragmentation induced by translocation to increase chromosome numbers may be the main mechanism of karyotype evolution in this superfamily. (3) Prophase Ⅰ during meiosis has typical bouquet stage but without diffuse stage, similar to Cicadelloidea, Membracoidea and Cicadoidea, but different from Fulgoroidea. The relationship of superfamilies in Auchenorrhyncha may be Fulgoroidea +{Cicadoidea+[Cercopoidea+ Cicadelloidea+Membracoidea)]}.

Key words: Homoptera, Cercopoidea, chromosome, meiosis, karyotype