Differential response of varying salinity and temperature on zoospore induction, regeneration and daily growth rate in Ulva fasciata (Chlorophyta, Ulvales)

作者：Mantri Vaibhav A^*; Singh Ravindra Pal; Bijo A J; Kumari Puja; Reddy C R K; Jha Bhavanath

来源：Journal of Applied Phycology, 2011, 23(2): 243-250.

DOI：10.1007/s10811-010-9544-4

• Cultivation
• Edible seaweed
• Salinity
• Temperature
• Ulva fasciata

Seaweed cultivation is imperative to augment increasing industrial demand. Ulva fasciata Delile is a potential seaweed for cultivation with applications in food industries. There is a renewed interest in large-scale aquaculture of this species in India due to its envisaged demand in snack food products. In the present study, we have successfully demonstrated the possibility of inducing zoospores in vegetative tissue, effective regeneration and improved growth in this seaweed by manipulating salinity (from 15 to 30 psu) and temperature (from 15 to 35A degrees C). The optimum salinity and temperature requirement for zoospores induction were found to be 15 psu and 25A degrees C, respectively. The quadriflagellate zoospores showed negative phototaxis and the settlement and germination pattern similar to several other green seaweeds. The optimum regeneration (78.53 A +/- 10.05%) was recorded at 25A degrees C and 30 psu salinity. The maximum daily growth rate (16.1 A +/- 0.28%) was at 25A degrees C and 30 psu salinity which corresponded to the field conditions. This method could be further refined at nursery culture to achieve artificial seeding essential for the success of commercial cultivation of this seaweed.

• 出版日期2011-4
• 单位海洋化工研究院有限公司