The swimming behaviour of Hormosira banksii spermatozoids was studied using videomicroscopy under different conditions, including movement on glass surfaces, on solvent droplets containing the species-specific gamete attractant at different concentrations and in relation to eggs. The results indicate a chemotaxis mechanism involving phobic responses as well as a kinesis in which the turning rate is reduced upon stimulation by pheromone. Preliminary data on respiration and carbon assimilation of spermatozoids are also reported.
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Maier et al. (1992) studied this question.
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