Diversity of the genus Sargassum (Fucales: Sargassaceae) in Tho Chu Archipelago, Kien Giang Province.

Nguyen Van Tu


Our study investigated 12 study sites in four main islands of Tho Chu archipelago in 2019. Six Sargassum species were recorded for the flora of Tho Chu Archipelago, viz.Sargassum aquifolium (Turner) C.Agardh, Sargassum feldmannii Pham-Hoang Ho, Sargassum ilicifolium (Turner) C.Agardh, Sargassum mcclurei Setchell, Sargassum oligocystum Montagne, Sargassum polycystum C.Agardh, among which  three species, namely Sargassum oligocystum Montagne, Sargassum feldmannii Pham-Hoang Ho and Sargassum mcclurei Setchell were newly recorded for Vietnam. There was a significant difference in species composition between Tho Chu, Hon Xanh, Hon Tu and Hon Cao islands; among them, Hon Xanh island differed from the other three islands by 28%, Hon Tu island and Tho Chu island were mostly similarity in flora composition with the similarity index of 85.7%. The morphology of some Sargassum species varied by ecological characteristics, especially for Sargassum aquifolium (Turner) C. Agardh and Sargassum oligocystum Montagne.



Sargassum, biodiversity, seaweed, Tho Chu island, Thailand bay.

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Chiang, Y.-M., T. Yoshida, T. Ajisaka, J. Gavino C. Trono, C. K. Tseng, and L. Baoren. 1992. Distribution and variation in Sargassum polycystum C. Agardh (Fucales, Phaeophyta). In: Abbott, I. A. (ed) Taxonomy of economic seaweeds with reference to some Pacific and Western Atlantic species, vol. 3. California Sea Grant College Program, La Jolla, California, USA, pp. 35‒42.

Do Anh Duy, Do Van Khuong 2013. The status of species diversity of seaweeds in surveyed islands in Vietnam sea. Vietnam Journal of Marine Science and Technology, 13(2): 105‒115 (in Vietnamese with English summary).

Do Anh Duy, Do Van Khuong, Tran Van Huong, Nguyen Van Hieu, Do Cong Thung, Nguyen Van Quan 2017. Marine species diversity in Tho Chau archipelago, Kien Giang province. Journal of Tropical Science and Technology, 4: 119–131 (in Vietnamese with English summary).

Mineur F., F. Arenas, J. Assis, A. Davies, A. H. Engelen, F. Fernandes, E.-J Malta, T. Thibaut, T. V. Nguyen, S. Vranken, E. A. Serrão, O. D. Clerck 2015. European seaweeds under pressure: Consequences for communities and ecosystem functioning. Journal of Sea Research, 98: 91‒108.

Kantachumpoo, A., S. Uwai, T. Noiraksar, and T. Komatsu. 2015. Systematics of marine brown alga Sargassum from Thailand: A preliminary study based on morphological data and nuclear ribosomal internal transcribed spacer 2 (ITS2) sequences. Ocean Science Journal, 50: 251‒262.

Nguyen Dac Ve, Tran Duc Thanh, Tran Dinh Lan, Bui Van Vuong, Nguyen Thi Minh Huyen 2017. Position resources of Tho chu island group, Southern Vietnam. Vietnam Journal of Marine Science and Technology, 18(2): 113-123 (in Vietnamese with English summary).

Nguyen Huu Dinh, Huynh Quang Nang, Tran Ngoc But, Nguyen Van Tien 1993. Marine algae of North Vietnam Technical and Science publishing House, pp 344. (in Vietnamese).

Nguyen Huu Dại 1997. Sargassacae of Vietnam, resources and utility. Agriculture Publishing House, pp. 190.

(in Vietnamese).

Nguyen Huu Dại 2007. Fucales Kylin (Flora of Viet Nam). Science and Technology Publishing House, Ha Noi, pp. 117.

(in Vietnamese).

Nguyen V. T., L. N. Hau, S. M. Lin, F. Steen and O. D. Clerck 2013. The checklist of the marine macroalgae of Vietnam. Botanica Marina Journal, 56(3): 207‒227.

Nguyen Van Tu 2014. Seaweed diversity in Vietnam, with an emphasis on the brown algal genus Sargassum. Ghent University, pp 196.

Noiraksar, T., and T. Ajisaka 2008. Taxonomy and distribution of Sargassum (Phaeophyceae) in the Gulf of Thailand. Journal of Applied Phycology, 20: 963‒977.

Pham Hoang Ho 1969. Marine algae of south Vietnam. Sai Gon study Center - Ministry of Education and Youth, pp. 558. (in Vietnamese).

Pham Hoang Ho 1985. The plant of Phu Quoc islands. Ho Chi Minh publishing house, pp. 188. (in Vietnamese).

Phang, S.-M., H.-Y. Yeong, E. T. Ganzon-Fortes, K. Lewmanomont, A. Prathep, L. N. Hau, G. S. Gerung, and K. S. Tan. 2016. Marine algae of the South China Sea bordered by Indonesia, Malaysia, Philippines, Singapore, Thailand and Vietnam. Raffles Bulletin of Zoology, 34: 13‒59.

Trono, G. C., Jr. 1992. The genus Sargassum in the Philippines. In: Abbott, I. A. (ed) Taxonomy of economic seaweeds with reference to some Pacific and Western Atlantic species, vol. 3. California Sea Grant College Program, La Jolla, California, USA. pp. 43–94.

Yoshida, T. 1989. Taxonomy of Sargassum. Algae, 4:107‒110.

https://www.algaebase.org/ [accessed on April 10th, 2020].

DOI: https://doi.org/10.15625/2615-9023/v42n2.14992 Display counter: Abstract : 133 views. PDF : 17 views.


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