Sperm chemotaxis in siphonophores. II. Calcium-dependent asymmetrical movement of spermatozoa induced by the attractant.

@article{Cosson1984SpermCI,
  title={Sperm chemotaxis in siphonophores. II. Calcium-dependent asymmetrical movement of spermatozoa induced by the attractant.},
  author={Marie Paule Cosson and Dani{\`e}le Carr{\'e} and Jacky J. Cosson},
  journal={Journal of cell science},
  year={1984},
  volume={68},
  pages={
          163-81
        }
}
Spermatozoa from siphonophores have been shown to be attracted towards an extracellular structure, the cupule, which covers the predetermined site of fertilization of the egg. Observations on sperm behaviour during the chemotactic response show that spermatozoa describe trajectories of large diameter (700-1000 micron) while far from the cupule, and of smaller diameter (200 micron) in the cupule area. The transition between the two types of swimming occurs progressively when spermatozoa cross a… CONTINUE READING

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Calcium mediates sperm

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