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Updated: Mar 22, 2026

Cultivation of the Marine Pelagic Tunicate Dolioletta gegenbauri Uljanin 1884 for Experimental Studies
Published on: August 9, 2019
THE CONCHOCELIS PHASE OF THREE SPECIES OF PORPHYRA IN CULTURE
1Friday Harbor Laboratories, Friday Harbor, Washington 98250.
Abstract:
The Conchocelis phases of Porphyra perforata f. patens, P. cuneiformis and P. nereocystis were cultured from spores in a sterile artificial medium at 12 C and with 25 ft-c illumination for 10 hr daily. The cultures showed differences in duration of the vegetative phase, sporulation, liberation of spores, and the return to the leafy phase. Morphological differences were also noticed. Since the 3 species were grown under identical conditions, it is inferred that these characteristics are probably different for the 3 species studied.
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