New hatchery methods for efficient spore use and seedling production of Palmaria palmata (dulse)

Abstract

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Concise review of the red macroalga dulse, Palmaria palmata (L.) Weber & Mohr

“…5) is triggered by short day conditions, i.e. 8 h of light per day and a temperature of 10 °C or below (Pang and Lüning 2006;Schmedes and Nielsen 2020a). However, development of tetrasporangia was reported under a photoperiod of 12:12 h (light:dark) but at a lower irradiance, i.e.…”

“…Optimizing hatchery conditions to promote spore release, dispersal then attachment to the substrate is critical for the viable commercial cultivation of P. palmata. In a recent study, Schmedes and Nielsen (2020a) developed a new system based on conical seeding tanks in a flow-through system in which fertile material is placed above the substrate (nets) and equipped with a secondary tank to recover unattached spores. The consecutive use of sorus material (5 to 15 g WW); i.e.…”