Alexandrium (Dinophyceae) species in Malaysian waters

Gires Usup, Leaw Chui Pin, Asmat Ahmad, Lim Po Teen

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

A study was carried out to determine the presence of paralytic shellfish poisoning (PSP) toxin-producing dinoflagellates in the coastal waters of Peninsula Malaysia. This followed first ever occurrences of PSP in the Straits of Malacca and the northeast coast of the peninsula. The toxic tropical dinoflagellate Pyrodinium bahamense var. compressum was never encountered in any of the plankton samples. On the other hand, five species of Alexandrium were found. They were Alexandrium affine, Alexandrium leei, Alexandrium minutum, Alexandrium tamarense and Alexandrium tamiyavanichii. Not all species were present at all sites. A. tamiyavanichii was present only in the central to southern parts of the Straits of Malacca. A. tamarense was found in the northern part of the straits, while A. minutum was only found in samples from the northeast coast of the peninsula. A. leei and A. affine were found in both the north and south of the straits. Cultured isolates of A. minutum and A. tamiyavanichii were proven toxic by the receptor binding assay for PSP toxins but A. tamarense clones were not toxic. Mean toxin content for the A. tamiyavanichii and A. minutum clones were 26 and 15fmol per cell STX equivalent, respectively. This study has provided evidence on the presence of PSP toxin-producing Alexandrium species in Malaysian waters which suggests that PSP could increase in importance in the future.

Original languageEnglish
Pages (from-to)265-275
Number of pages11
JournalHarmful Algae
Volume1
Issue number3
DOIs
Publication statusPublished - Oct 2002

Fingerprint

paralytic shellfish poisoning
Alexandrium
Dinophyceae
toxin
strait
toxins
dinoflagellate
clone
water
clones
coast
coasts
plankton
coastal water
Malaysia
assay
sampling
receptors
Alexandrium minutum
assays

Keywords

  • Alexandrium
  • Harmful algal blooms
  • Malaysia
  • Paralytic shellfish poisoning

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Usup, G., Pin, L. C., Ahmad, A., & Teen, L. P. (2002). Alexandrium (Dinophyceae) species in Malaysian waters. Harmful Algae, 1(3), 265-275. https://doi.org/10.1016/S1568-9883(02)00044-6

Alexandrium (Dinophyceae) species in Malaysian waters. / Usup, Gires; Pin, Leaw Chui; Ahmad, Asmat; Teen, Lim Po.

In: Harmful Algae, Vol. 1, No. 3, 10.2002, p. 265-275.

Research output: Contribution to journalArticle

Usup, G, Pin, LC, Ahmad, A & Teen, LP 2002, 'Alexandrium (Dinophyceae) species in Malaysian waters', Harmful Algae, vol. 1, no. 3, pp. 265-275. https://doi.org/10.1016/S1568-9883(02)00044-6
Usup, Gires ; Pin, Leaw Chui ; Ahmad, Asmat ; Teen, Lim Po. / Alexandrium (Dinophyceae) species in Malaysian waters. In: Harmful Algae. 2002 ; Vol. 1, No. 3. pp. 265-275.
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