Abstract
Previously we reported that a significant level of domoic acid, a causative toxin for amnesic shellfish poisoning, was detected in bivalves belonging to a genus Spondylus from various tropical Asian countries. These findings indicate that causative plankton species for domoic acid widely distribute in these areas. In the present study, we monitored seasonal change of domoic acid level of Spondylus versicolor in association with that of plankton samples in Nha Phu Bay, Khanh Hoa, Vietnam from December 2004 to October 2005. The toxicity of S. versicolor showed distinct seasonal variation. During the period when domoic acid level of S. versicolor was increasing, a significant level of domoic acid was detected in the plankton samples, showing the correlation between these two parameters. These findings show that plankton causative for domoic acid occurred in the bay, and S. versicolor accumulate domoic acid during a bloom of the toxic plankton by food web transfer.
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This work was partially supported by JSPS Core University Program and also Grant-in-Aid for Scientific Research (A) (18255012) from JSPS.
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Dao, H.V., Takata, Y., Omura, T. et al. Seasonal variation of domoic acid in a bivalve Spondylus versicolor in association with that in plankton samples in Nha Phu Bay, Khanh Hoa, Vietnam. Fish Sci 75, 507–512 (2009). https://doi.org/10.1007/s12562-009-0057-5
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DOI: https://doi.org/10.1007/s12562-009-0057-5