Gambierdiscus (Gonyaulacales, Dinophyceae) diversity in Vietnamese waters with description of G. vietnamensis sp. nov
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| Date | 2023-06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Language | English | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Author(s) | Nguyen‐ngoc Lam 1, Larsen Jacob2, Doan‐nhu Hai1, Nguyen Xuan‐vy1, Chomérat Nicolas3, Lundholm Nina4, Phan‐tan Luom5, Dao Ha Viet5, Nguyen Ngoc‐lan6, Nguyen Huy‐hoang6, Van Chu Thuoc7 |
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| Affiliation(s) | 1 : Institute of Oceanography Vietnam Academy of Science and Technology Vinh Nguyen Nha Trang ,Viet Nam 2 : IOC Science and Communication Centre on Harmful Algae University of Copenhagen, Marine Biological Section, Copenhagen Ø ,Denmark 3 : Ifremer, LITTORAL, Station of Marine Biology of Concarneau, Concarneau, France 4 : Natural History Museum of Denmark University of Copenhagen, Copenhagen K, Denmark 5 : Institute of Oceanogrphy Vietnam Academy of Science and Technology Vinh Nguyen Nha Trang ,Viet Nam 6 : Institute of Genome Research Vietnam Academy of Science and Technology Cau Giay, Hanoi ,Viet Nam 7 : Institute of Marine Environment and Resources Vietnam Academy of Science and Technology, Hai Phong City ,Viet Nam |
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| Source | Journal Of Phycology (0022-3646) (Wiley), 2023-06 , Vol. 59 , N. 3 , P. 496-517 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI | 10.1111/jpy.13326 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| WOS© Times Cited | 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Keyword(s) | bHABs, Gambierdiscus vietnamensis sp. nov., LSU rDNA, nuclear rDNA, phylogenetic, analysis, SSU morphology, Viet Nam | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Abstract | Viet Nam has a coastline of 3,200 km with thousands of islands providing diverse habitats for benthic harmful algal species including species of Gambierdiscus. Some of these species produce ciguatera toxins, which may accumulate in large carnivore fish potentially posing major threats to public health. This study reports five species of Gambierdiscus from Vietnamese waters, notably G. australes, G. caribaeus, G. carpenteri, G. pacificus, and G. vietnamensis sp. nov. All species are identified morphologically by LM and SEM, and identifications are supported by molecular analyses of nuclear rDNA (D1–D3 and D8–D10 domains of LSU, SSU, and ITS1-5.8S-ITS2 region) based on cultured material collected during 2010–2021. Statistical analyses of morphometric measurements may be used to differentiate some species if a sufficiently large number of cells are examined. Gambierdiscus vietnamensis sp. nov. is morphologically similar to other strongly reticulated species, such as G. belizeanus and possibly G. pacificus; the latter species is morphologically indistinguishable from G. vietnamensis sp. nov., but they are genetically distinct, and molecular analysis is deemed necessary for proper identification of the new species. This study also revealed that strains denoted G. pacificus from Hainan Island (China) should be included in G. vietnamensis sp. nov. |
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