Open-sea cultivation trial of the red alga, Palmaria palmata from seeded tetraspores in Strangford Lough, Northern Ireland

摘要: Abstract Cultivation of Palmaria palmata was performed by a technique introduced in this paper tetraspore release and attachment to culture string. Optimal conditions for laboratory growth were investigated with respect irradiance nutrient media. The length required the development attached sporelings also investigated, prior deployment seeded strings on longline structure Strangford Lough, Northern Ireland. Of grown 5, 10, 25 50 μmol m − 2  s − 1 , those at lower irradiances (5 10 μmol m ) significantly longer than higher after 12 weeks. Sporeling greater when F/2 media additional vitamin solution, compared medium without solution. Seeded string held 2, 4, 6, or 8 weeks. After 3 months sea, 2-week had fewer visible plants shorter 6 8-week strings, but all similar 7 months sea. demand P. as snack food Ireland regularly outstrips supply obtainable from natural populations. seeding tetraspores is proposed one method commercially cultivating large scale.