, Volume 44, Issue 3, pp 260–261 | Cite as

C-band differentiation between the chromosomes of two subspecies of the chironomid midgeChironomus thummi

  • K. Hägele
  • H. Speier
Short Communications


The metaphase chromosomes ofChironomus th. thummi contain approximately 17% more pericentric C-band heterochromatin than the chromosomes ofChironomus th. piger with 11% heterochromatin. InCh. th. thummi, the proportion of heterochromatin appeared to be much larger in metaphase chromosomes than in polytene chromosomes. This discrepancy is interpreted as being due to the specific chromosome organization and not as the result of an underreplication of heterochromatin during polytenization.

Key words

Chironomus th. thummi Ch. th. piger metaphase chromosomes heterochromatin 


  1. 1.
    Keyl, H.-G., and Strenzke, K., Z. Naturf.116 (1956) 727.Google Scholar
  2. 2.
    Keyl, H.-G., Chromosoma8 (1957) 739.PubMedGoogle Scholar
  3. 3.
    Hägele, K., Dev. Genet.8 (1987) 17.PubMedGoogle Scholar
  4. 4.
    Hägele, K., and Speier, H., Heredity54 (1985) 159.Google Scholar
  5. 5.
    Gatti, M., Pimpinelli, S., and Santini, G., Chromosoma57 (1976) 377.PubMedGoogle Scholar
  6. 6.
    Hägele, K., Chromosoma59 (1977) 207.PubMedGoogle Scholar

Copyright information

© Birkhäuser Verlag 1988

Authors and Affiliations

  • K. Hägele
    • 1
  • H. Speier
    • 1
  1. 1.Institut für GenetikRuhr-Universität BochumBochum 1(Federal Republic of Germany)

Personalised recommendations