Paralytic shellfish profiles produced by the toxic dinoflagellate pyrodinium bahamense from Sepanggar Bay, Malaysia

Al-Has, Asilah and Mohammad Noor, Normawaty and Muhammad Shaleh, Siti Raehanah and Ayub, Mohd Nor Azman and Darnis, Deny Susanti and Mustakim, Ghaffur Rahim (2023) Paralytic shellfish profiles produced by the toxic dinoflagellate pyrodinium bahamense from Sepanggar Bay, Malaysia. Pertanika Journal of Tropical Agricultural Science, 46 (1). pp. 359-372. ISSN 1511-3701 E-ISSN 2231-8542

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Abstract

Pyrodinium bahamense var compressum is a harmful dinoflagellate that produces saxitoxin, which causes paralytic shellfish poisoning (PSP) that is deadly to humans. A non-axenic culture of P. bahamense was established using f/2 media from samples collected from Sepanggar Bay, Kota Kinabalu, Sabah. Toxin analyses of cultures harvested on days 60, 120, 180, and 360 were performed using high-performance liquid chromatography with a fluorescence detector and compared with samples collected at the same location during the bloom in 2021. The highest cell toxin content was found in the bloom sample (86.2 fmole/ cell), and no toxin was detected in the culture 60 days old. In addition, cell toxin content for the P. bahamense culture was low (9.4-16.5 fmole/cell). Based on the toxin profile, P. bahamense comprises 84-98% of gonyautoxin 4. In summary, the current findings add to the existing knowledge of the toxin profiling of P. bahamense, a toxic, harmful algal bloom species, thus, leading to better toxin management.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Gonyautoxin, HPLC, PSP, Pyrodinium bahamense, saxitoxin
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Chemistry Kulliyyah of Science > Department of Marine Science
Depositing User:	Dr Deny Susanti Darnis
Date Deposited:	24 Feb 2023 10:40
Last Modified:	24 Jan 2024 16:42
URI:	http://irep.iium.edu.my/id/eprint/103797

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