Chinese Journal of Oceanology and Limnology

, Volume 28, Issue 3, pp 508–513

Effects of temperature and irradiance on early development of Chondrus ocellatus Holm (Gigartinaceae, Rhodophyta)

  • Xiao Li (李晓)
  • Peng Zhao (赵鹏)
  • Gaoge Wang (王高歌)
  • Dapeng Li (李大鹏)
  • Jicheng Wang (王继成)
  • Delin Duan (段德麟)
Biology

DOI: 10.1007/s00343-010-9043-0

Cite this article as:
Li, X., Zhao, P., Wang, G. et al. Chin. J. Ocean. Limnol. (2010) 28: 508. doi:10.1007/s00343-010-9043-0

Abstract

Chondrus is a type of commercially produced red seaweed that widely used for food and carrageen extraction. Although the natural life history of the alga had been well understood, the factors influencing development of the tetraspore and carpospore remain poorly understood. In the perspective of seedling resources, the regulation of early development is crucial for the seedling nursing; therefore, it is necessary to understand the physiological influences during its early development. In this study, we studied the effects of temperature and irradiance on the early development of Chondrus ocellatus Holm under laboratory conditions. The released tetraspores and carpospores were cultivated at different temperatures (10–28°C) and irradiances (10, 60 μmol photons m−2s−1) with a photoperiod of 12L:12D. The results indicate that both tetraspores and carpospores are tolerant to temperatures of 10–25°C, and have the highest relative growth rate at 20°C. Irradiance variances influenced the growth of the discoid crusts, and the influence was more significant with increasing temperature; 60 μmol photons m−2s−1 was more suitable than 10 μmol photons m−2s−1. The optimum temperature and irradiance for the development of seedlings was 20°C and 60 μmol photons m−2s−1, respectively.

Keyword

Chondrus ocellatus temperature irradiance early development 

Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer Berlin Heidelberg 2010

Authors and Affiliations

  • Xiao Li (李晓)
    • 1
    • 2
  • Peng Zhao (赵鹏)
    • 3
  • Gaoge Wang (王高歌)
    • 3
  • Dapeng Li (李大鹏)
    • 1
  • Jicheng Wang (王继成)
    • 1
  • Delin Duan (段德麟)
    • 1
  1. 1.Institute of OceanologyChinese Academy of SciencesQingdaoChina
  2. 2.Graduate School of Chinese Academy of SciencesBeijingChina
  3. 3.Ocean University of ChinaQingdaoChina