First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia
Several species of dinoflagellates in the genus Alexandrium are known to be toxic, and have been associated with paralytic shellfish poisoning (PSP) in Malaysia. These Alexandrium species showed high morphological similarity among the toxic and non-toxic species, and detailed observation of the thec...
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| Format: | Article |
| Language: | English |
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Malaysian Abstracting and Indexing System
2013
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| Online Access: | http://ir.unimas.my/id/eprint/16183/ http://ir.unimas.my/id/eprint/16183/1/First%20record%20of%20marine%20dinoflagellate%20%28abstract%29.pdf |
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| author | Kon, Nyuk Fong Hii, Kieng Soon Tan, Toh Hii Yek, Leh Hie Lim, Po Teen Leaw, Chui Pin |
| author_facet | Kon, Nyuk Fong Hii, Kieng Soon Tan, Toh Hii Yek, Leh Hie Lim, Po Teen Leaw, Chui Pin |
| author_sort | Kon, Nyuk Fong |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | Several species of dinoflagellates in the genus Alexandrium are known to be toxic, and have been associated with paralytic shellfish poisoning (PSP) in Malaysia. These Alexandrium species showed high morphological similarity among the toxic and non-toxic species, and detailed observation of the thecal plate’s arrangement is required for precise species identification. Co-occurrence of the toxic and non-toxic species has complicated the plankton monitoring of PSP. In this study, a clone of Alexandrium species was established from plankton samples collected from Kota Belud, Sabah. The specimen was observed under epi-fluorescence microscope, and nucleotide sequences of the nuclear-encoded ribosomal RNA gene obtained. Morphologically, the clone showed relatively wide and large sixth precingular plate (6´´) compared to that of A. minutum. The sulcal posterior plate (Sp) is similar to that of A. minutum, which is wider than long. The first apical plate (1´) is irregularly rhomboidal with a small ventral pore (vp) present on its right margin. The morphological characters resembled to the species description of A. tamutum. Phylogenetic analysis of the ITS rDNA region also revealed a monophyly of this clone with other strains of A. tamutum, and separating them from the A. minutum clade. Species-specific sequence signatures of A. tamutum were obtained in silico, which could be as potential oligonucleotide probe regions for species detection by using molecular tool. This represents the first report of A. tamutum found in Malaysian waters. |
| first_indexed | 2025-11-15T06:48:39Z |
| format | Article |
| id | unimas-16183 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:48:39Z |
| publishDate | 2013 |
| publisher | Malaysian Abstracting and Indexing System |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-161832017-05-09T07:41:59Z http://ir.unimas.my/id/eprint/16183/ First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia Kon, Nyuk Fong Hii, Kieng Soon Tan, Toh Hii Yek, Leh Hie Lim, Po Teen Leaw, Chui Pin SH Aquaculture. Fisheries. Angling Several species of dinoflagellates in the genus Alexandrium are known to be toxic, and have been associated with paralytic shellfish poisoning (PSP) in Malaysia. These Alexandrium species showed high morphological similarity among the toxic and non-toxic species, and detailed observation of the thecal plate’s arrangement is required for precise species identification. Co-occurrence of the toxic and non-toxic species has complicated the plankton monitoring of PSP. In this study, a clone of Alexandrium species was established from plankton samples collected from Kota Belud, Sabah. The specimen was observed under epi-fluorescence microscope, and nucleotide sequences of the nuclear-encoded ribosomal RNA gene obtained. Morphologically, the clone showed relatively wide and large sixth precingular plate (6´´) compared to that of A. minutum. The sulcal posterior plate (Sp) is similar to that of A. minutum, which is wider than long. The first apical plate (1´) is irregularly rhomboidal with a small ventral pore (vp) present on its right margin. The morphological characters resembled to the species description of A. tamutum. Phylogenetic analysis of the ITS rDNA region also revealed a monophyly of this clone with other strains of A. tamutum, and separating them from the A. minutum clade. Species-specific sequence signatures of A. tamutum were obtained in silico, which could be as potential oligonucleotide probe regions for species detection by using molecular tool. This represents the first report of A. tamutum found in Malaysian waters. Malaysian Abstracting and Indexing System 2013 Article PeerReviewed text en http://ir.unimas.my/id/eprint/16183/1/First%20record%20of%20marine%20dinoflagellate%20%28abstract%29.pdf Kon, Nyuk Fong and Hii, Kieng Soon and Tan, Toh Hii and Yek, Leh Hie and Lim, Po Teen and Leaw, Chui Pin (2013) First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia. Malaysian Journal of Science, 32. pp. 81-88. ISSN 13943065 https://www.researchgate.net/publication/290950406 |
| spellingShingle | SH Aquaculture. Fisheries. Angling Kon, Nyuk Fong Hii, Kieng Soon Tan, Toh Hii Yek, Leh Hie Lim, Po Teen Leaw, Chui Pin First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia |
| title | First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia |
| title_full | First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia |
| title_fullStr | First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia |
| title_full_unstemmed | First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia |
| title_short | First Record of Marine Dinoflagellate, Alexandrium Tamutum (Dinophyceae) from Malaysia |
| title_sort | first record of marine dinoflagellate, alexandrium tamutum (dinophyceae) from malaysia |
| topic | SH Aquaculture. Fisheries. Angling |
| url | http://ir.unimas.my/id/eprint/16183/ http://ir.unimas.my/id/eprint/16183/ http://ir.unimas.my/id/eprint/16183/1/First%20record%20of%20marine%20dinoflagellate%20%28abstract%29.pdf |