First report of Alexandrium taylori and Alexandrium peruvianum (Dinophyceae) in Malaysia waters

Po Teen Lim, Gires Usup, Chui Pin Leaw, Takehiko Ogata

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The occurrence of Alexandrium taylori and Alexandrium peruvianum is reported for the first time in Malaysia waters. The Malaysian A. taylori isolates were pyriform in shape with a transdiameter range of 36-40 μm and a cell length range of 33-37 μm. The first apical plate (1′) was pentagonal with two distinctive anterior margins. No direct connection between 1′ and the apical pore complex was observed. The posterior sulcal plate (S.p.) was large, elongated and oblique to the right with anterior projections. The ventral pore (vp) was relatively large and situated at a confluence point of 1′, the second apical (2′) and the fourth apical (4′) plates. Cells of A. peruvianum were slightly anteriorly and posteriorly compressed. S.p. had an irregular pentagonal shape, with the anterior margin divided into 2 portions. 1′ was boomerang-shaped with a large and truncated ventral pore in the middle right margin. The anterior right margin of 1′ was straight. The sixth precingular plate (6″) was wider than long. The anterior sulcal plate (S.a.) was triangular and lacked a left portion extension. In laboratory cultures, both A. taylori and A. peruvianum produced paralytic shellfish toxins, with GTX4 and GTX6 as the predominant toxin, respectively. This is the first report of PSP toxins production for both species as well as the occurrences in Malaysia waters.

Original languageEnglish
Pages (from-to)391-400
Number of pages10
JournalHarmful Algae
Volume4
Issue number2
DOIs
Publication statusPublished - Feb 2005

Fingerprint

Alexandrium
Malaysia
toxin
Dinophyceae
toxins
confluence
shellfish
water
cells

Keywords

  • Alexandrium peruvianum
  • Alexandrium taylori
  • Malaysia
  • PSP
  • Sarawak

ASJC Scopus subject areas

  • Aquatic Science

Cite this

First report of Alexandrium taylori and Alexandrium peruvianum (Dinophyceae) in Malaysia waters. / Lim, Po Teen; Usup, Gires; Leaw, Chui Pin; Ogata, Takehiko.

In: Harmful Algae, Vol. 4, No. 2, 02.2005, p. 391-400.

Research output: Contribution to journalArticle

Lim, Po Teen ; Usup, Gires ; Leaw, Chui Pin ; Ogata, Takehiko. / First report of Alexandrium taylori and Alexandrium peruvianum (Dinophyceae) in Malaysia waters. In: Harmful Algae. 2005 ; Vol. 4, No. 2. pp. 391-400.
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