The karyotypes of two bark-lice species (Psocoptera, Psocomorpha, Amphipsocidae): the first description of the neo-XY sex chromosome system in Psocoptera

• Authors: N. V. Golub , S. Nokkala
• Languages of publication: EN

Abstracts

EN

Karyotypes of two bark-lice species Amphipsocus japonicus End. and Dasypsocus japonicus End. (Amphipsocidae, Psocomorpha, Psocoptera) were studied for the first time. D. japonicus displayed 2n=16 (14+XX/X0). The XX/X0 sex chromosome system observed in this species is characteristic of the order Psocoptera. A. japonicus showed 2n=16 (14+neo-XY). This is the first observation of the neo-XY sex determination system in Psocoptera. In this species a large amount of constitutive heterochromatin was found in the original X-part of the neo-X chromosome.

Keywords

EN

AMPHIPSOCIDAE; HETEROCHROMATIN; KARYOTYPE; PSOCOPTERA

Discipline

• ZOOLOGY: ZOOLOGY

• Publisher: Institute of Systematics and Evolution of Animals, Polish Academy of Sciences
• Journal: Folia Biologica
• Year: 2001
• Volume: 49
• Issue: 3-4
• Pages: 153-156

Contributors

author

N. V. Golub

author

S. Nokkala

• Document Type: ARTICLE
• Publication order reference: N.V. Golub, Department of Karyosystematics, Zoological Institute, Russian Academy of Sciences, 199034 St. Petersburg, Russia