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Volume 43 Number 3 Volume 43 Number 4

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Research articles

ScienceAsia 43(2017): 207-216 |doi: 10.2306/scienceasia1513-1874.2017.43.207


Accumulation of domoic acid in marine organisms from Sriracha bay, Chonburi province, Thailand


Oning Veschasita, Shettapong Meksumpuna,b,c,*, Nissara Thawonsodea, Thaithaworn Lirdwitayaprasitd

 
ABSTRACT:     Domoic acid (DA), a toxin produced by diatoms Pseudo-nitzschia and Nitzschia, causes amnesic shellfish poisoning. DA accumulated in marine organisms from Sriracha bay, Chonburi province, Thailand was determined from May 2012 to July 2013. Field surveys and sample collections were conducted every two months. DA content was determined using the enzyme linked immunosorbent assay (ELISA) method and ranged between not detectable and 110 ng/l for plankton. DA content in zooplankton ranged between 0.04 and 0.21 ng/l and in Perna viridis, Crassostrea lugubris, and Pinctada fucata it ranged between 214 and 454, 171 and 371, and 117 and 282 ng/g, respectively. DA content in Secutor megalolepis ranged between not detectable and 44.2 ng/g. DA was found in zooplankton, shellfish, and fish from Sriracha bay throughout the year. The amount of DA accumulation in marine organisms was lower than the regulation level (20 µg/g). Average DA content in zooplankton, shellfish, and fish throughout the year were 42%, 44%, and 5% of the DA content in phytoplankton, respectively. DA transfers from phytoplankton to zooplankton and shellfish were 7% and 8%, respectively, while transfer from zooplankton to fish was 2%.

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a Department of Marine Science, Faculty of Fisheries, Kasetsart University, Bangkok 10900 Thailand
b Centre for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University, Kasetsart University, Bangkok 10900 Thailand (CASTNAR, NRU-KU, Thailand)
c Centre for Advanced Studies for Agriculture and Food, National Research University-Kasetsart University, Kasetsart University, Bangkok 10900 Thailand (CASAF, NRU-KU, Thailand)
d Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok 10330 Thailand

* Corresponding author, E-mail: ffisspm@ku.ac.th

Received 29 Jun 2017, Accepted 6 Nov 2017