Sexual Differentiation of the Gonad and the Sexualization of the Germ Cells in Teleosts


IN the Amphibia and Amniota, the original bisexuality of the gonad is evident from the dual origin of its two main constituents—the cortex from the peritoneal wall, and the medulla from the interrenal blastema1. Sexualization of the germ cells, which are originally indifferent, results from the action of one or other of the sexual differentiators which are produced in these areas, medullarin inducing maleness and cortexin femaleness (Witschi).

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Witschi, E., in Allen, E., 'Sex and Internal Secretions' (Baltimore, 1934). Vannini, E., Atti R. Accad. Italia, Mem., 13, 731 (1942).

    Google Scholar 

  2. 2

    Okkelberg, P., J. Morph., 35, 1 (1921).

    Article  Google Scholar 

  3. 3

    D'Ancona, U., and Vannini, E., Atti R. 1st. Veneto Sci. Lett. Arti,104, Pt. 2 (1945).

  4. 4

    D'Ancona, U., Arch. Ocean. Limnol., 4 (1945).

  5. 5

    Goldschmidt, R., 'Die sexuellen Zwischenstufen' (Berlin, 1931).

    Google Scholar 

  6. 6

    D'Ancona, XL., Medicina e Biologia, 3, 77 (1943).

    Google Scholar 

  7. 7

    Pasquali, ?., and D'Ancona, U., Pub. Staz. Zool. Napoli, 18, 282 and 313 (1941).

    Google Scholar 

  8. 8

    D'Ancona, U., Atti R. 1st. Veneto Sci. Lett. Arti, 103, Pt. 2, 457 (1944).

    Google Scholar 

  9. 9

    Galgano, M., Arch. Ital. Anat. Embriol., 37, 1 (1937). Vanning E., Arch. Zool. Ital., 30, 363 (1942).

    Google Scholar 

Download references

Author information



Rights and permissions

Reprints and Permissions

About this article

Cite this article

D'ANCONA, U. Sexual Differentiation of the Gonad and the Sexualization of the Germ Cells in Teleosts. Nature 156, 603–604 (1945).

Download citation

Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.