Volume 26 Issue 1
Jan.  2005
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WEI Qing, XIONG Yan, LUAN Yun-xia, YANG Yi-ming, XIE Rong-dong, YIN Wen-ying. First Note on Chromosomes and Male Meiosis Division of Collembola in China. Zoological Research, 2005, 26(1): 96-100.
Citation: WEI Qing, XIONG Yan, LUAN Yun-xia, YANG Yi-ming, XIE Rong-dong, YIN Wen-ying. First Note on Chromosomes and Male Meiosis Division of Collembola in China. Zoological Research, 2005, 26(1): 96-100.

First Note on Chromosomes and Male Meiosis Division of Collembola in China

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2005-02-22
  • Chromosomes of two Collembola species,Hypogastrura adexilis (Stach,1964) (Hypogastruridae) and Sinella curviseta Brook 1889 (Entomobryidae),were investigated for the first time by squashing whole mount. The results indicated:in H.adexilis,haploid chromosome number was n=7,and 2n=13 in male and 2n=14 in female,so sex chromosome system should be XO;in S.curviseta,n=6,2n=11 in male and 2n=12 in female,also XO sex determination.The male meiosis of H.adexilis was observed:at prophase Ⅰ,homologous chromosomes pairing occurred,and chiasma presented in some bivalents;in the others,homologue were just end-to-end associations;at early anaphase Ⅰ,sex chromosome typically was left behind when autosome half bivalents moved to the poles, and it moved to one of the poles in late telophase Ⅰ.
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