Health Risk Assessment of Okadaic Acid and Domoic Acid in Some Edible Bivalves from Hormozgan Province in the North of Persian Gulf

Document Type : Original Research Paper

Authors

1 Persian Gulf and Oman Sea Ecological Research Center, Iranian Fisheries Science Research Institute, Agricultural Resarch, Education and Extension Organization (AREEO), Bandar Abbas, Iran

2 College of Science, Slippery Rock University, PA, 16057, United State

Abstract

The biotoxins can enter the marine food chain, and, accordingly, seafood consumers are also at risk of ingesting toxins from contaminated aquatic animals. Hormozgan Province in the north of Persian Gulf is an area with high industrial and urbanization rising rate. In the present work, the aim was to identify the okadaic acid and domoic acid producers in the coastal waters and to investigate on their accumulated concentrations in edible bivalves in order to assess the consumer’s health risk. Water samples were collected during winter 2018 and summer 2019 from one blank and four stations facing industrial and municipal effluents. Four species of edible bivalves were collected from coastal lines of Hormozgan province, at the lowest tide time. The concentrations of toxins were determined by indirect competitive ELISA method. Pseudonitzschia delicatissima, Nitzschia punges and Nitzschia seriata in the production of domoic acid and Dinophysis caudate, Prorocentrum Lima and Ceratium tripos in the production of okadaic acid were identified. The okadaic acid concentrations ranged from 59.8 ± 2.38 to 121.96 ± 28.25 µg/kg, ranging from 0.85 to 83.59 ± 38.72 for Domoic acid. Among the studied bivalves, Pinctada radiate contained the maximum concentrations of measured toxins. For the first time at Hormozgan Province, the consumption guidelines for domoic and okadaic acid were calculated. The human health risk assessment showed that at present time, the algal consumers from Hormozgan province are not at risk of domoic and okadaic acid toxins.

Keywords

References

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Pollution
Volume 8, Issue 3
May 2022
Pages 934-947

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