Ecology and taxanomy of potential amnesic shellfish poising (ASP) causing diatom Pseudo-nitzschia species (bacillariophyceae) in Malaysian water

Su, Suriyanti Nyun Pau. (2011) Ecology and taxanomy of potential amnesic shellfish poising (ASP) causing diatom Pseudo-nitzschia species (bacillariophyceae) in Malaysian water. Masters thesis, Faculty of Resources Science & Technology.

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Abstract

Amnesic shellfish poisoning (ASP) is a type of human intoxication due to consumption of contaminated shellfish with algal origin domoic acid (DA). In this study, seasonal occurrence of Pseudo-nitzschia species in two estuarine waters was investigated by plankton and water samplings for 30 months period at fortnightly interval. The abundance of Pseudo-nitzschia was apparently influenced by water salinity, pH, silicate concentrations and precipitation rates. Pseudo-nitzschia occured mainly between April and September but cells were mostly abundant in May. Highest cell density recorded in Santubong and Samariang was 8.0x103 cells L-1 and and 2.9x104 cells L-1 respectively. Based on ultrastructural features of Pseudo-nitzschia under transmission and scanning electron microscopic (TEM and SEM) observations, the Pseudo-nitzschia species were identified as Pseudo-nitzschia pungens and P.brasiliana

Item Type: Thesis (Masters)
Additional Information: Thesis (M.Sc.) -- Universiti Malaysia Sarawak, 2011.
Uncontrolled Keywords: Diatoms, Pseudo-nitzschia, domoic acid, cell abundance, morphology, oligonucleotide probes, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, Postgraduate, research, Universiti Malaysia Sarawak
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Faculties, Institutes, Centres > Faculty of Resource Science and Technology
Depositing User: Saman
Date Deposited: 12 Sep 2016 17:55
Last Modified: 07 Aug 2023 04:13
URI: http://ir.unimas.my/id/eprint/13486

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