plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
Effects of Temperature, Irradiance and Nutrients on the Growth and Maturation of Conchocelis in Pyropia yezoensis and Pyropia dentata
서혜민·한이윤·이우진·임현지·박은정*
국립부경대학교 해양생물학과
The effects of temperature (10-30 °C), irradiance (0, 20, and 100 μmol photons·m-2·s-1), and nutrient regime on the growth and maturation of the conchocelis of Pyropia yezoensis and Pyropia dentata were studied. Both species exhibited vigorous growth under specific temperature conditions, with optimal growth at 15 and 25 °C for P. yezoensis and P. dentata, respectively. Complete mortality was observed at 30°C, and growth was inhibited; however, the cells remained viable under complete darkness. Conchocelis growth was inhibited and conchosporangial formation was delayed under nonenriched conditions compared with under nutrient enriched treatments. Conchosporangia were observed in P. yezoensis at 20-25°C, and in P. dentata under all temperature conditions except 10°C. Temperature, irradiance, and nutrients interactively influenced conchocelis development. These findings provide a basis for understanding stress tolerance of the microscopic stage in Pyropia species under changing marine conditions. This study has practical implications for establishing effective seed production systems and conservation strategies for natural Pyropia populations, contributing to the sustainable management of Pyropia aquaculture under future climate scenarios.
Pyropia yezoensis, Pyropia dentata, Conchocelis, Environmental condition, Growth and maturation