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Genetic effects on sperm design in the zebra finch

Author

Listed:
  • T. R. Birkhead

    (University of Sheffield)

  • E. J. Pellatt

    (University of Sheffield)

  • P. Brekke

    (University of Sheffield)

  • R. Yeates

    (University of Sheffield)

  • H. Castillo-Juarez

    (Calzada del Hueso 1100)

Abstract

Sperm evolution: no contest The design of sperm is an important factor in male reproductive success, so seems likely to be under strong selection pressure. However, sperm evolution has not been subjected to detailed quantitative genetics study, in part because of the mass of data that needs to be collected first. A breeding experiment involving 900 pairs of zebra finches now provides some of the necessary numbers. Surprisingly it reveals pronounced variations in sperm design between individuals, including flagellum and mitochondrion length, both closely linked to sperm velocity. This variety may be a result of infrequent sperm competition in this species, or to maternal genetic influence.

Suggested Citation

  • T. R. Birkhead & E. J. Pellatt & P. Brekke & R. Yeates & H. Castillo-Juarez, 2005. "Genetic effects on sperm design in the zebra finch," Nature, Nature, vol. 434(7031), pages 383-387, March.
    • Handle: RePEc:nat:nature:v:434:y:2005:i:7031:d:10.1038_nature03374
    DOI: 10.1038/nature03374
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