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- W2600785888 abstract "Dinoflagellates are eukaryotic biflagellated, unicellular organisms that can be found ,inboth freshwater and marine habitats. Several species are harmful as they producepotent neurotoxins; cause unusual blooming phenomena in the marine environment. InMalaysia, harmful algal blooms (HABs) event was first reported in 1976. Since thenseveral studies on HABs have been undertaken, focusing mainly in areas wherepoisoning cases were reported.) In this study, samplings were conducted in severallocations including sites where' no poisoning case has been reported, but intensiveaquaculture activity is ongoing. Plankton and seaweed samples were collected andbrought back to the laboratory. Single-cell of dinoflagellates were isolated and clonalcultures established. Both field and cultured specimens were observed under light andscanning electron microscopy (SEM). Identification to species level was based ondetailed investigation of the thecal plates. Nucleotide sequences of the nuclearencodedribosomal DNA were obtained from clonal cultures, and preliminary toxinanalysis was performed by ELISA and LC-MS. A total of 46 taxa of harmful and/orpotentially harmful dinoflagellates were identified and documented from fourlocations (Cherating, Pahang, Port Dickson, Negeri Sembi lan, Tebrau Strait, Johor,and Kuching, Sarawak). Two taxa are new records of occurrence in Malaysian waters,namely Karlodinium veneficum from Tebrau Strait and Protoceratiumfukuyoii sp. novfrom Semariang. Notably the PST-producing dinoflagellates, Alexandriumlamiyavanichii and Pyrodinium bahamense were found, for the first time, in Sarawakwaters and the Straits of Malacca, respectively. Molecular data obtained from thepresent study, and the molecular signatures identified for each species will serve aspreliminary data for DNA barcoding of the harmful dinoflagellates. Inventory of theharmful dinoflagellate species wiIl provide useful baseline infonnation of the harmfulspecies present in Malaysian waters. Furthermore, distribution data on harmfuldinoflagellates could be used to identify the hotspots of potential HABs incidences forearly warning and HABs monitoring purposes." @default.
- W2600785888 created "2017-04-07" @default.
- W2600785888 creator A5079466647 @default.
- W2600785888 date "2012-01-01" @default.
- W2600785888 modified "2023-09-27" @default.
- W2600785888 title "Harmful marine dinoflagellates (Dinophyceae) of Malaysia including new records of taxa based on morphology and molecular" @default.
- W2600785888 hasPublicationYear "2012" @default.
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