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Carpospore shedding was studied in Gracilaria cornea in order to determine maximum spore output potential for mariculture purposes. The combined effects of temperature (23, 26 and 29 °C), daylength (8:16, 12:12 and 16:8 light:dark), photon irradiance (darkness, 20 and 40 μmol m−2 s−1) and spore release method (spontaneous release, osmotic shock and drying) were tested. Maximum spore shedding in cystocarpic...
The effects of nitrogen source, nitrogen:phosphorus ratio, nitrogen pulse concentrations and pulse frequency on Gracilaria cornea growth were investigated under laboratory cultures. No significant differences in growth rate were detected between nitrogen sources, the mean growth rate decreased from ca. 14 to 11% d−2 over 8 weeks. Our results indicate that G. cornea can efficiently grow either with...
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