Skip to main content
  • Published:

The Mitotic and Meiotic Chromosomes of the Muskrat (Ondatra Zirethica L.)

Abstract

The chromosome number of the muskrat (Ondatra zibethica L.) was determined to be 54 in an investigation of the mitotic and meiotic chromosomes. All chromosomes are one-armed with the exception of one small pair which is biarmed. Further, the X chromosome, one of the largest of the complement, seems to have a small secondary arm making possible an identification of the pair. A systematic investigation of the chromosomes, and especially the sex chromosomes at different stages of the spcrmatocytogenesis, has been performed.

References

  • Basrur, P.Κ., V.R. Basrur & J.P.W. Gilman: A simple method for short term cultures from small biopsies. Exp. Cell. Res. 1963, 30, 229–232.

    Article  CAS  Google Scholar 

  • Evans, E.P., G. Breckon & C.E. Ford: An air-drying method for meiotic preparations from mammalian testes. Cytogenetics 1964, 3, 289–294.

    Article  CAS  Google Scholar 

  • Geyer-Duszyńska, I.: On the structure of the XY bivalent in Mus musculus L. Chromosoma (Beri.) 1963, 13, 521–525.

    Article  Google Scholar 

  • Hultén, M,, J. Lindsten, Pen-Ming L. Ming & M. Fraccaro: The XY bivalent in human male meiosis. Ann. hum. Genet. 1966, 30, 119–123.

    Article  Google Scholar 

  • Klinger, H.P.: The somatic chromosomes of some primates (Tupaia glis, Nycticebus cousang, Tarsius bancanus, Cercocebus aterri-mus, Symphalangus syndactylus. Cytogenetics 1963, 2, 140–151.

    Article  CAS  Google Scholar 

  • Levan, Α., K. Fredga & A.A. Sandberg: Nomenclature for centromeric position on chromosomes. Hereditas (Lund) 1964, 52, 201–220.

    Article  Google Scholar 

  • Makino, S.: Chromosome numbers of some American rodents. Science 1953, 118, 3073.

    Google Scholar 

  • Mather, K.: Polygenic inheritance and natural selection. Biol. Rev. 1943, 18, 32–64.

    Article  Google Scholar 

  • Matthey, P.: Nouvelles recherches sur les chromosomes des Muridae. (New investigations in the chromosomes of the Muridae). Ca-ryologia 1954, 6, 1–44.

    Google Scholar 

  • Moore, Jr., Wellington, B.L. Elder & L.J. Gillespie: The chromosomes of the muskrat. J. Hered. 1966, 57, 104.

    Article  Google Scholar 

  • Ohno, S., W.D. Kaplan & R. Kinosita: Note on non-chiasma-type association between the X and Y chromosomes of Drosophila me-lanogaster and Mus musculus. Exp. Cell Res. 1957, 13, 422–424.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kihlberg, CG., Gustavsson, I. & Sundt, C.O. The Mitotic and Meiotic Chromosomes of the Muskrat (Ondatra Zirethica L.). Acta Vet Scand 10, 181–192 (1969). https://doi.org/10.1186/BF03548288

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1186/BF03548288