First report of the toxigenic Nitzschia navis-varingica (Bacillariophyceae) isolated from Tebrau Straits, Johor, Malaysia

S. N P Suriyanti, Gires Usup

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Screening of the occurrence of potentially toxic diatoms was carried out at two sites of cage cultures in Tebrau Straits, Johor. Phytoplankton samples from Sungai Pendas and Teluk Sengat were collected using a 20 μm mesh plankton net and salinity was recorded in-situ. Nitzschia and Pseudo-nitzschia cells were isolated and established into clonal cultures. All cultures were tested for domoic acid using HPLC-UV analysis and verified by LC-MS analysis. Three Nitzschia spp. and one Pseudo-nitzschia sp. were identified from these locations. Toxic and non-toxic strains of Nitzschia navis-varingica are found at the cage culture areas. Cellular toxin content in the toxic strain of N. navis-varingica is 1.8 pg cell-1. This is a new record from Malaysia and this species was isolated from estuarine water with salinity 28 PSU. The discovery of toxic Nitzschia species in Tebrau Straits indicates the potential for domoic acid accumulation in seafood.

Original languageEnglish
Pages (from-to)257-263
Number of pages7
JournalToxicon
Volume108
DOIs
Publication statusPublished - 15 Dec 2015

Fingerprint

Poisons
Malaysia
Salinity
Plankton
Diatoms
Phytoplankton
Seafood
Screening
High Pressure Liquid Chromatography
Water
domoic acid

Keywords

  • Amnesic shellfish poisoning
  • Benthic diatom
  • Domoic acid
  • Marine
  • Toxic

ASJC Scopus subject areas

  • Toxicology

Cite this

First report of the toxigenic Nitzschia navis-varingica (Bacillariophyceae) isolated from Tebrau Straits, Johor, Malaysia. / Suriyanti, S. N P; Usup, Gires.

In: Toxicon, Vol. 108, 15.12.2015, p. 257-263.

Research output: Contribution to journalArticle

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