Reproductive Biology of Sargassum thunbergii (Fucales, Phaeophyceae)


Sargassum thunbergii is an economically important brown alga that is used as a perferred food for sea cucumber in China. However, reports on the reproductive biology of S. thunbergii are limited. This study observed the characteristics of mature receptacles. The effects of different temperatures, light intensities, and photoperiods on the egg release of mature S. thunbergii receptacles were investigated. A liquid-phase oxygen electrode system was used to obtain light saturation and light compensation points of egg and young thalli of S. thunbergii. Results showed that temperature was the key factor for the egg release of mature receptacles. The conditions most conducive to egg release were 20°C to 23°C temperature and 50 μmol photons m-2·s-1 to 200 μmol photons m-2·s-1 light intensity. In addition, the light saturation and compensation points of unfertilized eggs or young thalli at 2 d or 3 d postfertilization ranged from 90 μmol photons m-2·s-1 to 120 μmol photons m-2·s-1 and 14 μmol photons m-2·s-1 to 22 μmol photons m-2·s-1, respectively. The combined results provide a reference for the sporeling culture of S. thunbergii.

Share and Cite:

Liang, Z. , Wang, F. , Sun, X. , Wang, W. and Liu, F. (2014) Reproductive Biology of Sargassum thunbergii (Fucales, Phaeophyceae). American Journal of Plant Sciences, 5, 2574-2581. doi: 10.4236/ajps.2014.517271.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Li, W.X., Zhu, Z.J. and Liu, F.X. (1982) An Outline of Marine Algae. Shanghai Science and Technology Press, Shanghai.
[2] Han, X.D. and Li, F.P. (2005) Characteristics and Utilization of Sargassum thunbergii. Special Economic Animals and Plants, 1, 27 (in Chinese with English Abstract).
[3] Liu, X.Y., Zhu, G.H., Zhao, Q., Wang, L. and Gu, B.X. (2004) Studies on Hatchery Techniques of the Sea Cucumber, Apostichopus japonicus. In: Alessandro, L., Ed., Advances in Sea Cucumber Aquaculture and Management, FAO Fisheries Technical Paper, 463.
[4] Umezaki, I. (1974) Ecological Studies of Sargassum thunbergii (Mertens) O. Kuntze in Maizuru Bay, Japan Sea. The Botanical Magazine, 87, 285-292.
[5] Itoh, H., Noda, H., Amano, H., Zhuang, C., Mizuno, T. and Ito, H. (1993) Antitumor Activity and Immunological Properties of Marine Algal Polysaccharides, Especially Fucoidan, Prepared from Sargassum thunbergii of Phaeophyceae. Anticancer Research, 13, 2045-2052.
[6] Liu, J.H. and Zhang, Y.H. (1995) Preliminary Study on the Benthic Algae in the Intertidal Region of Muguan Island. Transactions of Oceanology and Limnology, 1, 80-86 (in Chinese with English Abstract).
[7] Yan, X.J. (1996) Measuring Content of Polyphenols of Common Seaweeds in China. Studia Marina Sinica, 37, 61-65 (in Chinese with English Abstract).
[8] Shi, R.X. and Xu, Z.H. (1997) Antimicrobial Activities of Several Seaweeds in Qingdao Coast. Chinese Journal of Marine Drugs, 4, 16-19 (in Chinese with English Abstract).
[9] Wang, W.D. (2003) Investigation and Study on Sargassum and Hizikia in Zhejiang Province. Journal of Shanghai Fisheries University, 12, 227-232 (in Chinese with English Abstract).
[10] Park, P.J., Heo, S.J., Park, E.J., Kim, S.K., Byun, H.G., Jeon, B.T. and Jeon, Y.J. (2005) Reactive Oxygen Scavenging Effect of Enzymatic Extracts from Sargassum thunbergii. Journal of Agricultural and Food Chemistry, 53, 6666-6672.
[11] Zhao, F.J., Wang, X.L., Liu, J.D. and Duan, D.L. (2007) Population Genetic Structure of Sargassum thunbergii (Fucales, Phaeophyta) Detected by RAPD and ISSR Markers. Journal of Applied Phycology, 19, 409-416.
[12] Wang, Z.F. and Liu, J.G. (2007) The Sexual Reproduction of Sargassum thunbergii and Its Application in Seedling Breeding. Oceanologia et Limnologia Sinica, 38, 453-457 (in Chinese with English Abstract).
[13] Zhao, Z.G., Zhao, F.J., Yao, J.T., Lu, J.M., Ang, P.O.J. and Duan, D.L. (2008) Early Development of Germlings of Sargassum thunbergii (Fucales, Phaeophyta) under Laboratory Conditions. Journal of Applied Phycology, 20, 925-931.
[14] Zou, D.H. and Gao K.S. (2010) Photosynthetic Acclimation to Different Light Levels in the Brown Marine Macroalga, Hizikia fusiformis (Sargassaceae, Phaeophyta). Journal of Applied Phycology, 22, 395-404.
[15] Sun, J.Z., Fang, J.Z. and Zhu, Z.F. (1996) A Preliminary Study on the Reproductive Biology of Sargassum fursiforme. Journal of Zhejiang Ocean University (Natural Science), 15, 243-249 (in Chinese with English Abstract).
[16] Zhang, X, Zou, D.H., Xu, Z.G., Liu, S.X. and Gao, K.S. (2008) Effect of Different Photoperiods Period on Sexual Reproduction in Seaweed Hizikia fusiformis. Fisheries Science, 27, 452-454 (in Chinese with English Abstract).

Copyright © 2022 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.