, Volume 147, Issue 1, pp 329–334 | Cite as

Fertilization and male fertility in the rotifer Brachionus plicatilis

  • Terry W. Snell
  • Frank H. Hoff
Part Six: Reproduction


The role of males in fertilization in the rotifer Brachionus plicatilis was examined. Neonate mictic females sometimes escaped fertilization even when sperm were present in their pseudocoeloms. Males made a major contribution to this fertilization failure through temporary infertility. As males aged, sperm numbers and motility decreased. Maternal diet was found to play a primary role in determining the fertilizing capacity of the F1 males. Females from log phase populations produced males with higher sperm counts and motility than females from stationary phase populations. A conditioning factor in the medium may increase sperm number and fertilization rate.


fertilization sperm number sperm motility ageing diet Rotifera 


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Copyright information

© Dr W. Junk Publishers 1987

Authors and Affiliations

  • Terry W. Snell
    • 1
  • Frank H. Hoff
    • 2
  1. 1.Division of ScienceUniversity of TampaTampaUSA
  2. 2.Florida Aqua FarmsDade CityUSA

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